TY  - JOUR
AU  - Rosić Vitas, Maja
AU  - Sedak, Miloš
AU  - Simić, Mirjana
AU  - Pejović, Predrag V.
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5360
AB  - This paper addresses the problem of time difference of arrival (TDOA) based passive target localizationand proposes an improved chaos-driven hybrid differential evolution (DE) algorithm and butterfly optimization algorithm (BOA), named ICDEBOA, to solve this complex optimization problem. The proposed algorithm consists of a new mutation strategy with the mechanisms of the BOA algorithm incorporated into the DE algorithm. To boost optimization effectiveness, chaos theory is employed to adjust the control parameter values. The considered localization problem is formulated using the maximum likelihood estimator. To perform the accuracy comparison, the convex constrained weighting least squares algorithm is applied to the considered localization problem as the widely used method in literature. The statistical analysis shows that the proposed modifications to the ICDEBOA algorithm improve its optimization performance, as demonstrated by the improved performance on the CEC2014 benchmark problems. The ICDEBOA algorithm is also shown to be more robust than existing algorithms in noisy environments. Numerical simulation results show that the proposed ICDEBOA algorithm meets the CRLB and achieves better performance than the CWLS, DE, and BOA algorithms.
PB  - MDPI, Basel, Switzerland
T2  - Applied Sciences
T1  - An Improved Chaos Driven Hybrid Differential Evolution and Butterfly Optimization Algorithm for Passive Target Localization Using TDOA Measurements
IS  - 2
VL  - 13
DO  - 10.3390/app13020684
ER  - 

@article{
author = "Rosić Vitas, Maja and Sedak, Miloš and Simić, Mirjana and Pejović, Predrag V.",
year = "2023",
abstract = "This paper addresses the problem of time difference of arrival (TDOA) based passive target localizationand proposes an improved chaos-driven hybrid differential evolution (DE) algorithm and butterfly optimization algorithm (BOA), named ICDEBOA, to solve this complex optimization problem. The proposed algorithm consists of a new mutation strategy with the mechanisms of the BOA algorithm incorporated into the DE algorithm. To boost optimization effectiveness, chaos theory is employed to adjust the control parameter values. The considered localization problem is formulated using the maximum likelihood estimator. To perform the accuracy comparison, the convex constrained weighting least squares algorithm is applied to the considered localization problem as the widely used method in literature. The statistical analysis shows that the proposed modifications to the ICDEBOA algorithm improve its optimization performance, as demonstrated by the improved performance on the CEC2014 benchmark problems. The ICDEBOA algorithm is also shown to be more robust than existing algorithms in noisy environments. Numerical simulation results show that the proposed ICDEBOA algorithm meets the CRLB and achieves better performance than the CWLS, DE, and BOA algorithms.",
publisher = "MDPI, Basel, Switzerland",
journal = "Applied Sciences",
title = "An Improved Chaos Driven Hybrid Differential Evolution and Butterfly Optimization Algorithm for Passive Target Localization Using TDOA Measurements",
number = "2",
volume = "13",
doi = "10.3390/app13020684"
}

Rosić Vitas, M., Sedak, M., Simić, M.,& Pejović, P. V.. (2023). An Improved Chaos Driven Hybrid Differential Evolution and Butterfly Optimization Algorithm for Passive Target Localization Using TDOA Measurements. in Applied Sciences
MDPI, Basel, Switzerland., 13(2).
https://doi.org/10.3390/app13020684

Rosić Vitas M, Sedak M, Simić M, Pejović PV. An Improved Chaos Driven Hybrid Differential Evolution and Butterfly Optimization Algorithm for Passive Target Localization Using TDOA Measurements. in Applied Sciences. 2023;13(2).
doi:10.3390/app13020684 .

Rosić Vitas, Maja, Sedak, Miloš, Simić, Mirjana, Pejović, Predrag V., "An Improved Chaos Driven Hybrid Differential Evolution and Butterfly Optimization Algorithm for Passive Target Localization Using TDOA Measurements" in Applied Sciences, 13, no. 2 (2023),
https://doi.org/10.3390/app13020684 . .

TY  - JOUR
AU  - Sedak, Miloš
AU  - Rosić Vitas, Maja
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7334
AB  - The multi-objective optimization (MOO) of a planetary gearbox is a challenging optimization problem, which includes simultaneous minimization of a number of conflicting objectives including gearbox volume, contact ratio, power loss, etc., and at the same time satisfying a number of complex constraints. This paper addresses this complex problem by proposing a modified hybrid algorithm, named Multi-objective Hybrid Butterfly Optimization and Particle Swarm Optimization Algorithm (HMOBPSO), which integrates PSO and Particle Swarm Optimization (BOA) algorithms with the aim to improve the performance with respect to the considered problem. The proposed approach solves the non-convex Pareto set and provides vital insights for lowering gear weight and efficiency and avoiding early failure. The experimental analysis employs numerical simulations to determine the Pareto optimal solutions to the formulated MOO problem. The results show that the proposed method offers significant improvements in terms of gearbox size, efficiency, and spacing compared to the conventional methods. In addition, an assessment of the optimization performance of the proposed HMOBPSO algorithm has been conducted by comparing it to other established algorithms across several ZDT and DTLZ benchmark problems, where it demonstrated its effectiveness.
PB  - MDPI, Basel, Switzerland
T2  - Applied Sciences
T1  - Hybrid Butterfly Optimization and Particle Swarm Optimization Algorithm-Based Constrained Multi-Objective Nonlinear Planetary Gearbox Optimization
IS  - 21
SP  - 11682
VL  - 13
DO  - 10.3390/app132111682
ER  - 

@article{
author = "Sedak, Miloš and Rosić Vitas, Maja",
year = "2023",
abstract = "The multi-objective optimization (MOO) of a planetary gearbox is a challenging optimization problem, which includes simultaneous minimization of a number of conflicting objectives including gearbox volume, contact ratio, power loss, etc., and at the same time satisfying a number of complex constraints. This paper addresses this complex problem by proposing a modified hybrid algorithm, named Multi-objective Hybrid Butterfly Optimization and Particle Swarm Optimization Algorithm (HMOBPSO), which integrates PSO and Particle Swarm Optimization (BOA) algorithms with the aim to improve the performance with respect to the considered problem. The proposed approach solves the non-convex Pareto set and provides vital insights for lowering gear weight and efficiency and avoiding early failure. The experimental analysis employs numerical simulations to determine the Pareto optimal solutions to the formulated MOO problem. The results show that the proposed method offers significant improvements in terms of gearbox size, efficiency, and spacing compared to the conventional methods. In addition, an assessment of the optimization performance of the proposed HMOBPSO algorithm has been conducted by comparing it to other established algorithms across several ZDT and DTLZ benchmark problems, where it demonstrated its effectiveness.",
publisher = "MDPI, Basel, Switzerland",
journal = "Applied Sciences",
title = "Hybrid Butterfly Optimization and Particle Swarm Optimization Algorithm-Based Constrained Multi-Objective Nonlinear Planetary Gearbox Optimization",
number = "21",
pages = "11682",
volume = "13",
doi = "10.3390/app132111682"
}

Sedak, M.,& Rosić Vitas, M.. (2023). Hybrid Butterfly Optimization and Particle Swarm Optimization Algorithm-Based Constrained Multi-Objective Nonlinear Planetary Gearbox Optimization. in Applied Sciences
MDPI, Basel, Switzerland., 13(21), 11682.
https://doi.org/10.3390/app132111682

Sedak M, Rosić Vitas M. Hybrid Butterfly Optimization and Particle Swarm Optimization Algorithm-Based Constrained Multi-Objective Nonlinear Planetary Gearbox Optimization. in Applied Sciences. 2023;13(21):11682.
doi:10.3390/app132111682 .

Sedak, Miloš, Rosić Vitas, Maja, "Hybrid Butterfly Optimization and Particle Swarm Optimization Algorithm-Based Constrained Multi-Objective Nonlinear Planetary Gearbox Optimization" in Applied Sciences, 13, no. 21 (2023):11682,
https://doi.org/10.3390/app132111682 . .

TY  - CONF
AU  - Lazarević, Mihailo
AU  - Radojević, Darko
AU  - Mandić, Petar
AU  - Pišl, Stjepko
AU  - Šekara, Tomislav
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6800
AB  - U ovom radu prvo se razmatra jedan mehanički sistem gde je u cilju smanjenja neželjenih vibracija primenjen prigušni viskoelastični element tipa Scot-Blair-a frakcionog reda 0<alpha≤1.  Primenjeno je upravljanje u povratnoj sprezi sa kašnjenjem koji  uključuje prvi i drugi izvod vektora stanja sa kašnjenjem.  Posebno, razmatra se slučaj zatvorenog neutralnog sistema sa  kašnjenjem frakcionog reda alpha=1/2, gde su dobijeni dovoljni  uslovi stabilnosti na konačnom vremenskom intervalu. Takođe,  razmatran je i slucaj potiskivanja samopobudnih (chattering)
oscilacija u procesu rezanja metala. Predloženo je upravljanje u  povratnoj sprezi sa kašnjenjem koji uključuje i drugi izvod  vektora stanja sa kašnjenjem. Formiran je odgovarajući kriterijum stabilnosti na konačnom vremenskom inervalu. Na kraju, efikasnost predloženog pristupa je ilustrovana na dva pogodno izabrana numerička primera
PB  - Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet
C3  - Zbornik radova XXII međunarodni simpozijum INFOTEH-JAHORINA 2023 15 - 17. mart 2023, Jahorina, Istočno Sarajevo, Republika Srpska, Bosna i Hercegovina
T1  - Upravljanje u povratnoj sprezi sa kašnjenjem određene klase mehaničkih sistema necelog i celog reda: neka pitanja stabilnosti i stabilizacije na konačnom vremenskom intervalu
EP  - 290
SP  - 285
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6800
ER  - 

@conference{
author = "Lazarević, Mihailo and Radojević, Darko and Mandić, Petar and Pišl, Stjepko and Šekara, Tomislav",
year = "2023",
abstract = "U ovom radu prvo se razmatra jedan mehanički sistem gde je u cilju smanjenja neželjenih vibracija primenjen prigušni viskoelastični element tipa Scot-Blair-a frakcionog reda 0<alpha≤1.  Primenjeno je upravljanje u povratnoj sprezi sa kašnjenjem koji  uključuje prvi i drugi izvod vektora stanja sa kašnjenjem.  Posebno, razmatra se slučaj zatvorenog neutralnog sistema sa  kašnjenjem frakcionog reda alpha=1/2, gde su dobijeni dovoljni  uslovi stabilnosti na konačnom vremenskom intervalu. Takođe,  razmatran je i slucaj potiskivanja samopobudnih (chattering)
oscilacija u procesu rezanja metala. Predloženo je upravljanje u  povratnoj sprezi sa kašnjenjem koji uključuje i drugi izvod  vektora stanja sa kašnjenjem. Formiran je odgovarajući kriterijum stabilnosti na konačnom vremenskom inervalu. Na kraju, efikasnost predloženog pristupa je ilustrovana na dva pogodno izabrana numerička primera",
publisher = "Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet",
journal = "Zbornik radova XXII međunarodni simpozijum INFOTEH-JAHORINA 2023 15 - 17. mart 2023, Jahorina, Istočno Sarajevo, Republika Srpska, Bosna i Hercegovina",
title = "Upravljanje u povratnoj sprezi sa kašnjenjem određene klase mehaničkih sistema necelog i celog reda: neka pitanja stabilnosti i stabilizacije na konačnom vremenskom intervalu",
pages = "290-285",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6800"
}

Lazarević, M., Radojević, D., Mandić, P., Pišl, S.,& Šekara, T.. (2023). Upravljanje u povratnoj sprezi sa kašnjenjem određene klase mehaničkih sistema necelog i celog reda: neka pitanja stabilnosti i stabilizacije na konačnom vremenskom intervalu. in Zbornik radova XXII međunarodni simpozijum INFOTEH-JAHORINA 2023 15 - 17. mart 2023, Jahorina, Istočno Sarajevo, Republika Srpska, Bosna i Hercegovina
Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet., 285-290.
https://hdl.handle.net/21.15107/rcub_machinery_6800

Lazarević M, Radojević D, Mandić P, Pišl S, Šekara T. Upravljanje u povratnoj sprezi sa kašnjenjem određene klase mehaničkih sistema necelog i celog reda: neka pitanja stabilnosti i stabilizacije na konačnom vremenskom intervalu. in Zbornik radova XXII međunarodni simpozijum INFOTEH-JAHORINA 2023 15 - 17. mart 2023, Jahorina, Istočno Sarajevo, Republika Srpska, Bosna i Hercegovina. 2023;:285-290.
https://hdl.handle.net/21.15107/rcub_machinery_6800 .

Lazarević, Mihailo, Radojević, Darko, Mandić, Petar, Pišl, Stjepko, Šekara, Tomislav, "Upravljanje u povratnoj sprezi sa kašnjenjem određene klase mehaničkih sistema necelog i celog reda: neka pitanja stabilnosti i stabilizacije na konačnom vremenskom intervalu" in Zbornik radova XXII međunarodni simpozijum INFOTEH-JAHORINA 2023 15 - 17. mart 2023, Jahorina, Istočno Sarajevo, Republika Srpska, Bosna i Hercegovina (2023):285-290,
https://hdl.handle.net/21.15107/rcub_machinery_6800 .

TY  - CONF
AU  - Sedak, Miloš
AU  - Dimić, Aleksandar
AU  - Rosić, Božidar
AU  - Ristivojević, Mileta
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5367
AB  - In this paper, we have considered tip interference and radial interference of internal involute spur gears. Equations of tooth profiles are provided and operating constraints for internal gears are defined. The undercutting and interference of the teeth profiles are the main problems for the practical application of internal gears in planetary gear trains, which requires particular attention in the design of planetary gear trains. The problem of avoiding interference of internal involute spur gears is especially challenging. Therefore, it is necessary to create the corresponding geometric models and express the above requirements by the corresponding functional constraints to verify the engagement condition. The developed geometrical model of the tooth surfaces is most helpful in the analysis of meshing interference, contact, and stress analyzing, manufacturing, measuring, and optimizing internal gear sets. The numerical results are tested by computerized simulation of the meshing of internal involute spur gears.
PB  - UNIVERSITY OF BELGRADE Faculty of Mechanical Engineering
C3  - 10th International Scientific Conference - IRMES 2022
T1  - Interference analysis of internal involute spur gear pair
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5367
ER  - 

@conference{
author = "Sedak, Miloš and Dimić, Aleksandar and Rosić, Božidar and Ristivojević, Mileta",
year = "2022",
abstract = "In this paper, we have considered tip interference and radial interference of internal involute spur gears. Equations of tooth profiles are provided and operating constraints for internal gears are defined. The undercutting and interference of the teeth profiles are the main problems for the practical application of internal gears in planetary gear trains, which requires particular attention in the design of planetary gear trains. The problem of avoiding interference of internal involute spur gears is especially challenging. Therefore, it is necessary to create the corresponding geometric models and express the above requirements by the corresponding functional constraints to verify the engagement condition. The developed geometrical model of the tooth surfaces is most helpful in the analysis of meshing interference, contact, and stress analyzing, manufacturing, measuring, and optimizing internal gear sets. The numerical results are tested by computerized simulation of the meshing of internal involute spur gears.",
publisher = "UNIVERSITY OF BELGRADE Faculty of Mechanical Engineering",
journal = "10th International Scientific Conference - IRMES 2022",
title = "Interference analysis of internal involute spur gear pair",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5367"
}

Sedak, M., Dimić, A., Rosić, B.,& Ristivojević, M.. (2022). Interference analysis of internal involute spur gear pair. in 10th International Scientific Conference - IRMES 2022
UNIVERSITY OF BELGRADE Faculty of Mechanical Engineering..
https://hdl.handle.net/21.15107/rcub_machinery_5367

Sedak M, Dimić A, Rosić B, Ristivojević M. Interference analysis of internal involute spur gear pair. in 10th International Scientific Conference - IRMES 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_5367 .

Sedak, Miloš, Dimić, Aleksandar, Rosić, Božidar, Ristivojević, Mileta, "Interference analysis of internal involute spur gear pair" in 10th International Scientific Conference - IRMES 2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_5367 .

TY  - CONF
AU  - Sedak, Miloš
AU  - Rosić Vitas, Maja
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5481
AB  - This paper considers the problem of formulating the non-linear optimization model for determining the optimal parameters of planetary gearbox, which is solved using a metaheuristic optimization algorithm. To determine the optimal parameters of the planetary gearbox it is necessary to formulate complex objective functions and minimize them, which is often a conflicting problem. To solve this complex optimization problem, in this paper we propose to employ metaheuristic algorithms, which characterize pseudo-randomness and the ability to find the global optimal solution to the multimodal optimization problems. The proposed metaheuristic method is based on the Genetic Algorithm (GA) which is hybridized with the local-search Nelder-Mead method. For the considered optimization problem, the appropriate software is implemented in the MATLAB software package, to verify the results. Inside the considered optimization module, we have defined the appropriate objective functions and constraints which determine the construction of the planetary gearbox. The optimal parameters of the planetary gearbox obtained using the proposed metaheuristic algorithm are compared with the results obtained using several well-known algorithms in the literature. The simulation results of the proposed optimization method indicate a significant improvement in planetary gearbox performance compared to the parameters obtained with well-known algorithms.
C3  - 10th International Scientific Conference on Defensive Technologies OTEH 2022
T1  - Planetary gear pair design using metaheuristic algorithms
EP  - 91
SP  - 86
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5481
ER  - 

@conference{
author = "Sedak, Miloš and Rosić Vitas, Maja",
year = "2022",
abstract = "This paper considers the problem of formulating the non-linear optimization model for determining the optimal parameters of planetary gearbox, which is solved using a metaheuristic optimization algorithm. To determine the optimal parameters of the planetary gearbox it is necessary to formulate complex objective functions and minimize them, which is often a conflicting problem. To solve this complex optimization problem, in this paper we propose to employ metaheuristic algorithms, which characterize pseudo-randomness and the ability to find the global optimal solution to the multimodal optimization problems. The proposed metaheuristic method is based on the Genetic Algorithm (GA) which is hybridized with the local-search Nelder-Mead method. For the considered optimization problem, the appropriate software is implemented in the MATLAB software package, to verify the results. Inside the considered optimization module, we have defined the appropriate objective functions and constraints which determine the construction of the planetary gearbox. The optimal parameters of the planetary gearbox obtained using the proposed metaheuristic algorithm are compared with the results obtained using several well-known algorithms in the literature. The simulation results of the proposed optimization method indicate a significant improvement in planetary gearbox performance compared to the parameters obtained with well-known algorithms.",
journal = "10th International Scientific Conference on Defensive Technologies OTEH 2022",
title = "Planetary gear pair design using metaheuristic algorithms",
pages = "91-86",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5481"
}

Sedak, M.,& Rosić Vitas, M.. (2022). Planetary gear pair design using metaheuristic algorithms. in 10th International Scientific Conference on Defensive Technologies OTEH 2022, 86-91.
https://hdl.handle.net/21.15107/rcub_machinery_5481

Sedak M, Rosić Vitas M. Planetary gear pair design using metaheuristic algorithms. in 10th International Scientific Conference on Defensive Technologies OTEH 2022. 2022;:86-91.
https://hdl.handle.net/21.15107/rcub_machinery_5481 .

Sedak, Miloš, Rosić Vitas, Maja, "Planetary gear pair design using metaheuristic algorithms" in 10th International Scientific Conference on Defensive Technologies OTEH 2022 (2022):86-91,
https://hdl.handle.net/21.15107/rcub_machinery_5481 .

TY  - CONF
AU  - Rosić Vitas, Maja
AU  - Sedak, Miloš
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5482
AB  - Accurate localization of target based on time difference of arrival (TDOA) measurements is of crucial importance in a large number of different military and civil applications, especially in security systems, radars, sonars etc. This paper focuses on the determining the position of a target from a set of TDOA measurements obtained on several receivers whose positions are known. The considered target localization problem is formulated as the optimization problem, where the corresponding objective function is obtained based on least squares (LS) method. Due to the complexity of the considered problem, the resulting objective function is highly nonlinear and multimodal. Therefore, to solve this complex optimization problem this paper proposes the hybridization of Genetic Algorithm (GA) with well-known Gauss-Newton (GN) method. The performance of considered hybrid algorithm is investigated and compared to well-known conventional optimization algorithms in solving the considered TDOA based localization problem. The simulation results of the proposed optimization method indicate a significant improvement in localization accuracy compared to well-known algorithms.
PB  - International Scientific Conference on Defensive Technologies (OTEH 2022)
C3  - 10th International Scientific Conference on Defensive Technologies OTEH 2022
T1  - TDOA based approach for accurate target localization based on hybrid genetic algorithm
EP  - 327
SP  - 321
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5482
ER  - 

@conference{
author = "Rosić Vitas, Maja and Sedak, Miloš",
year = "2022",
abstract = "Accurate localization of target based on time difference of arrival (TDOA) measurements is of crucial importance in a large number of different military and civil applications, especially in security systems, radars, sonars etc. This paper focuses on the determining the position of a target from a set of TDOA measurements obtained on several receivers whose positions are known. The considered target localization problem is formulated as the optimization problem, where the corresponding objective function is obtained based on least squares (LS) method. Due to the complexity of the considered problem, the resulting objective function is highly nonlinear and multimodal. Therefore, to solve this complex optimization problem this paper proposes the hybridization of Genetic Algorithm (GA) with well-known Gauss-Newton (GN) method. The performance of considered hybrid algorithm is investigated and compared to well-known conventional optimization algorithms in solving the considered TDOA based localization problem. The simulation results of the proposed optimization method indicate a significant improvement in localization accuracy compared to well-known algorithms.",
publisher = "International Scientific Conference on Defensive Technologies (OTEH 2022)",
journal = "10th International Scientific Conference on Defensive Technologies OTEH 2022",
title = "TDOA based approach for accurate target localization based on hybrid genetic algorithm",
pages = "327-321",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5482"
}

Rosić Vitas, M.,& Sedak, M.. (2022). TDOA based approach for accurate target localization based on hybrid genetic algorithm. in 10th International Scientific Conference on Defensive Technologies OTEH 2022
International Scientific Conference on Defensive Technologies (OTEH 2022)., 321-327.
https://hdl.handle.net/21.15107/rcub_machinery_5482

Rosić Vitas M, Sedak M. TDOA based approach for accurate target localization based on hybrid genetic algorithm. in 10th International Scientific Conference on Defensive Technologies OTEH 2022. 2022;:321-327.
https://hdl.handle.net/21.15107/rcub_machinery_5482 .

Rosić Vitas, Maja, Sedak, Miloš, "TDOA based approach for accurate target localization based on hybrid genetic algorithm" in 10th International Scientific Conference on Defensive Technologies OTEH 2022 (2022):321-327,
https://hdl.handle.net/21.15107/rcub_machinery_5482 .

TY  - JOUR
AU  - Rosić Vitas, Maja
AU  - Sedak, Miloš
AU  - Simić, Mirjana
AU  - Pejović, Predrag V.
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5365
AB  - This paper considers the problem of finding the position of a passive target using noisy time difference of arrival (TDOA) measurements, obtained from multiple transmitters and a single receiver. The maximum likelihood (ML) estimator’s objective function is extremely nonlinear and non-convex, making it impossible to use traditional optimization techniques. In this regard, this paper proposes the chaos-enhanced adaptive hybrid butterfly particle swarm optimization algorithm, named CAHBPSO, as the hybridization of butterfly optimization (BOA) and particle swarm optimization (PSO) algorithms, to estimate passive target position. In the proposed algorithm, an adaptive strategy is employed to update the sensory fragrance of BOA algorithm, and chaos theory is incorporated into the inertia weight of PSO algorithm. Furthermore, an adaptive switch probability is employed to combine global and local search phases of BOA with the PSO algorithm. Additionally, the semidefinite programming is employed to convert the considered problem into a convex one. The statistical comparison on CEC2014 benchmark problems shows that the proposed algorithm provides a better performance compared to well-known algorithms. The CAHBPSO method surpasses the BOA, PSO and semidefinite programming (SDP) algorithms for a broad spectrum of noise, according to simulation findings, and achieves the Cramer–Rao lower bound (CRLB).
PB  - MDPI, Basel, Switzerland
T2  - Sensors
T1  - Chaos-Enhanced Adaptive Hybrid Butterfly Particle Swarm Optimization Algorithm for Passive Target
IS  - 15
VL  - 22
DO  - doi.org/10.3390/s22155739
ER  - 

@article{
author = "Rosić Vitas, Maja and Sedak, Miloš and Simić, Mirjana and Pejović, Predrag V.",
year = "2022",
abstract = "This paper considers the problem of finding the position of a passive target using noisy time difference of arrival (TDOA) measurements, obtained from multiple transmitters and a single receiver. The maximum likelihood (ML) estimator’s objective function is extremely nonlinear and non-convex, making it impossible to use traditional optimization techniques. In this regard, this paper proposes the chaos-enhanced adaptive hybrid butterfly particle swarm optimization algorithm, named CAHBPSO, as the hybridization of butterfly optimization (BOA) and particle swarm optimization (PSO) algorithms, to estimate passive target position. In the proposed algorithm, an adaptive strategy is employed to update the sensory fragrance of BOA algorithm, and chaos theory is incorporated into the inertia weight of PSO algorithm. Furthermore, an adaptive switch probability is employed to combine global and local search phases of BOA with the PSO algorithm. Additionally, the semidefinite programming is employed to convert the considered problem into a convex one. The statistical comparison on CEC2014 benchmark problems shows that the proposed algorithm provides a better performance compared to well-known algorithms. The CAHBPSO method surpasses the BOA, PSO and semidefinite programming (SDP) algorithms for a broad spectrum of noise, according to simulation findings, and achieves the Cramer–Rao lower bound (CRLB).",
publisher = "MDPI, Basel, Switzerland",
journal = "Sensors",
title = "Chaos-Enhanced Adaptive Hybrid Butterfly Particle Swarm Optimization Algorithm for Passive Target",
number = "15",
volume = "22",
doi = "doi.org/10.3390/s22155739"
}

Rosić Vitas, M., Sedak, M., Simić, M.,& Pejović, P. V.. (2022). Chaos-Enhanced Adaptive Hybrid Butterfly Particle Swarm Optimization Algorithm for Passive Target. in Sensors
MDPI, Basel, Switzerland., 22(15).
https://doi.org/doi.org/10.3390/s22155739

Rosić Vitas M, Sedak M, Simić M, Pejović PV. Chaos-Enhanced Adaptive Hybrid Butterfly Particle Swarm Optimization Algorithm for Passive Target. in Sensors. 2022;22(15).
doi:doi.org/10.3390/s22155739 .

Rosić Vitas, Maja, Sedak, Miloš, Simić, Mirjana, Pejović, Predrag V., "Chaos-Enhanced Adaptive Hybrid Butterfly Particle Swarm Optimization Algorithm for Passive Target" in Sensors, 22, no. 15 (2022),
https://doi.org/doi.org/10.3390/s22155739 . .

TY  - CONF
AU  - Urošević, Marko
AU  - Zrnić, Nenad
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5003
AB  - Stackers are one of the vital parts of the system that work on the exploitation of coal in open-pit mines. During their exploitation life, they are exposed to hard working conditions in which dynamic and stochastic loads act on them. Therefore, the analysis of their dynamic behavior is necessary in order to prevent failures and ensure a longer working life. Given that the structure of the stackers is a dominantly spatial truss structure, the paper presents the procedure of forming a spatial reduced dynamic model of the stacker superstructure and analysis of the influence of the eccentricity of the discharge boom tension pulley created during the production process. The results are given through the displacements and accelerations of the referent points of the structure. The quantification of the eccentricity influence from the aspect of the dynamic behaviour of the machine is presented and discussed.
PB  - University of Belgrade, Faculty of Mechanical Engineering
C3  - Proceedings of the XXIV International Conference MHCL’22
T1  - The Impact of the Eccentricity of the Tension Pulley on the Dynamic Response of the Stacker Superstructure
EP  - 70
SP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5003
ER  - 

@conference{
author = "Urošević, Marko and Zrnić, Nenad",
year = "2022",
abstract = "Stackers are one of the vital parts of the system that work on the exploitation of coal in open-pit mines. During their exploitation life, they are exposed to hard working conditions in which dynamic and stochastic loads act on them. Therefore, the analysis of their dynamic behavior is necessary in order to prevent failures and ensure a longer working life. Given that the structure of the stackers is a dominantly spatial truss structure, the paper presents the procedure of forming a spatial reduced dynamic model of the stacker superstructure and analysis of the influence of the eccentricity of the discharge boom tension pulley created during the production process. The results are given through the displacements and accelerations of the referent points of the structure. The quantification of the eccentricity influence from the aspect of the dynamic behaviour of the machine is presented and discussed.",
publisher = "University of Belgrade, Faculty of Mechanical Engineering",
journal = "Proceedings of the XXIV International Conference MHCL’22",
title = "The Impact of the Eccentricity of the Tension Pulley on the Dynamic Response of the Stacker Superstructure",
pages = "70-61",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5003"
}

Urošević, M.,& Zrnić, N.. (2022). The Impact of the Eccentricity of the Tension Pulley on the Dynamic Response of the Stacker Superstructure. in Proceedings of the XXIV International Conference MHCL’22
University of Belgrade, Faculty of Mechanical Engineering., 61-70.
https://hdl.handle.net/21.15107/rcub_machinery_5003

Urošević M, Zrnić N. The Impact of the Eccentricity of the Tension Pulley on the Dynamic Response of the Stacker Superstructure. in Proceedings of the XXIV International Conference MHCL’22. 2022;:61-70.
https://hdl.handle.net/21.15107/rcub_machinery_5003 .

Urošević, Marko, Zrnić, Nenad, "The Impact of the Eccentricity of the Tension Pulley on the Dynamic Response of the Stacker Superstructure" in Proceedings of the XXIV International Conference MHCL’22 (2022):61-70,
https://hdl.handle.net/21.15107/rcub_machinery_5003 .

TY  - JOUR
AU  - Mandić, Petar
AU  - Bošković, Marko C.
AU  - Sekara, Tomislav B.
AU  - Lazarević, Mihailo
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/90
AB  - This paper presents a new optimisation method for PID controller cascaded with a lead-lag compensator (PIDC). Parameters of the controller are obtained by solving the constrained optimisation problem. We propose two variants of the optimality criterion. The first one is defined through the max-min optimisation problem wherein objective function is the amplitude frequency response of the PIDC controller. The second one is based on an effective approximation of the minimum value of the amplitude frequency response of the PIDC controller. Consequently, we obtain a computationally less expensive problem. Both variants of optimality criterion result in efficient load disturbance and noise rejection, while robustness is ensured by constraining the value of the maximum sensitivity Ms. Good reference shaping is supported with proper constraints based on the Amplitude Optimum (AO) principle. Numerous batches of processes typically encountered in the industry are used to demonstrate the effectiveness of the proposed design method.
PB  - Taylor & Francis Ltd, Abingdon
T2  - International Journal of Control
T1  - A new optimisation method of PIDC controller under constraints on robustness and sensitivity to measurement noise using amplitude optimum principle
DO  - 10.1080/00207179.2021.1912392
ER  - 

@article{
author = "Mandić, Petar and Bošković, Marko C. and Sekara, Tomislav B. and Lazarević, Mihailo",
year = "2021",
abstract = "This paper presents a new optimisation method for PID controller cascaded with a lead-lag compensator (PIDC). Parameters of the controller are obtained by solving the constrained optimisation problem. We propose two variants of the optimality criterion. The first one is defined through the max-min optimisation problem wherein objective function is the amplitude frequency response of the PIDC controller. The second one is based on an effective approximation of the minimum value of the amplitude frequency response of the PIDC controller. Consequently, we obtain a computationally less expensive problem. Both variants of optimality criterion result in efficient load disturbance and noise rejection, while robustness is ensured by constraining the value of the maximum sensitivity Ms. Good reference shaping is supported with proper constraints based on the Amplitude Optimum (AO) principle. Numerous batches of processes typically encountered in the industry are used to demonstrate the effectiveness of the proposed design method.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "International Journal of Control",
title = "A new optimisation method of PIDC controller under constraints on robustness and sensitivity to measurement noise using amplitude optimum principle",
doi = "10.1080/00207179.2021.1912392"
}

Mandić, P., Bošković, M. C., Sekara, T. B.,& Lazarević, M.. (2021). A new optimisation method of PIDC controller under constraints on robustness and sensitivity to measurement noise using amplitude optimum principle. in International Journal of Control
Taylor & Francis Ltd, Abingdon..
https://doi.org/10.1080/00207179.2021.1912392

Mandić P, Bošković MC, Sekara TB, Lazarević M. A new optimisation method of PIDC controller under constraints on robustness and sensitivity to measurement noise using amplitude optimum principle. in International Journal of Control. 2021;.
doi:10.1080/00207179.2021.1912392 .

Mandić, Petar, Bošković, Marko C., Sekara, Tomislav B., Lazarević, Mihailo, "A new optimisation method of PIDC controller under constraints on robustness and sensitivity to measurement noise using amplitude optimum principle" in International Journal of Control (2021),
https://doi.org/10.1080/00207179.2021.1912392 . .

TY  - THES
AU  - Sedak, Miloš
PY  - 2021
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=8315
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:24141/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=48221193
UR  - https://nardus.mpn.gov.rs/handle/123456789/18588
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/85
AB  - Planetarni prenosnici spadaju u grupu mehaničkih zupčastih prenosnika, koji su široko zastupljeni za transformaciju i prenos snage prvenstveno zbog kompaktnosti konstrukcije, visoke pouzdanosti i stepena iskorišćenja. Polazeći od funkcije, koju treba da ispuni u okviru neke konstrukcije, kao i sve strožih zahteva u pogledu performansi prenosnika, predmet istraživanja ove doktorske disertacije je razvoj višekriterijumskog optimizacionog modela planetarnog prenosnika. Razvijeni modeli koji zadovoljavaju niz strogih zahteva u pogledu: kompaktnosti konstrukcije, minimizacije gubitaka u prenosu snage, ravnomernosti raspodele opterećenja, kao i pouzdanosti u različitim eksploatacionim uslovima. Za postavljeni problem višekriterijumske optimizacije planetarnog prenosnika formirane su odgovarajuće kriterijumske funkcije i definisan je niz funkcionalnih ograničenja, kao i odgovarajući domeni primene svih relevantnih veličina zupčastih parova sa spoljašnjim i unutrašnjim ozubljenjem i planetarnog prenosnika kao složenog sistema, u cilju nesmetane montaže, pouzdanog rada i sprezanja zupčastih parova. U okviru doktorske disertacije, razvijen je odgovarajući mehanički model za određivanje stepena iskorišćenja istovremeno spregnutih zupčastih parova, u zavisnosti od njihovih geometrijskih parametara, kao i od uslova podmazivanja. Kriterijumske funkcije formiranog višekriterijumskog optimizacionog problema su nelinearne i nekonveksne pa se globalno optimalno rešenje ne može numerički odrediti konvencionalnim metodama optimizacije. Prema tome, u cilju rešavanja ovog kompleksnog optimizacionog problema potrebno je primeniti metaheurističke optimizacione algoritme. Dakle, postoji stalna potreba za poboljšanjem postojećih i razvojem novih metaheurističkih algoritama i to razvojem adaptivnih tehnika za podešavanje upravljačkih parametara i hibridizacijom algoritama. U skladu sa tim, u okviru doktorske disertacije detaljno su razmatrani metaheuristički algoritmi, koji pripadaju grupi evolutivnih algoritama, kao što su algoritam diferencijalne evolucije (Differential Evolution, DE), genetski algoritam (Genetic Algorithm, GA) kao i algoritmi inspirisani biološkim sistemima u prirodi, i to algoritam optimizacije rojem čestica (Partical Swarm Optimization, PSO). U cilju otklanjanja nedostataka metaheurističkih algoritama koji se javljaju tokom optimizacionog procesa, algoritmi predloženi u okviru disertacije su modifikovani kroz: razvoj adaptivnih mehanizama za podešavanje vrednosti upravljačkih parametara, i hibridizaciju adekvatnih algoritama. U cilju formiranja efikasnog hibridnog algoritma, procesu hibridizacije je prethodila detaljna numerička simulacija i statistička analiza performansi razmatranih algoritama. Prema tome, hibridizacijom algoritama postignuto je adekvatno iskorišćenje prednosti jednog i istovremena eliminacija nedostataka drugog algoritma...
AB  - Planetary gearboxes have a wide application in the field of transformation and transmission of power from the drive to the working machine, due to the compact structure, high reliability and efficiency. Due to the increasingly stringent performance requirements, which planetary gearboxes must satisfy, the research in this dissertation is focused on the problem of multi-objective non-linear optimization of planetary gearbox based on hybrid metaheuristic algorithm, which satisfies a number of strict requirements, such as: compact construction, minimization of power loss, load distribution and reliability in different operating conditions. In this work the formulations of the objective functions for the considered multiobjective optimization problem of planetary gearbox have been outlined along with the appropriate constraints. The formulated constraints have been analyzed and appropriate domains of practical applications of internal and external gear pairs have been formulated, with the aim to ensure proper working, mounting and meshing of considered gears. Furthermore, the theoretical formulation and numerical procedure for the calculation of the planetary gearbox power efficiency has been developed in this work. However, the objective functions and developed constraints of the considered Multiobjective planetary gearbox optimization problem are nonlinear and multimodal functions, and therefore the global optimal solution cannot be obtained using the conventional optimization methods. Therefore, in order to solve this multiobjective and complex optimization problem, the research in this dissertation is focused on metaheuristic optimization algorithms, which belong to the group of evolutionary algorithms, including: differential evolution algorithm and genetic algorithm, as well as the algorithms inspired by the biological systems, such as particle swarm optimization algorithm. To overcome difficulties in solving complex optimization problems, in this thesis the considered algorithms are modified with the development of adaptive techniques for setting the values of control parameters and hybridization of algorithms. In order to create an effective hybrid algorithm, the hybridization process has been preceded by extensive numerical simulations and statistical analysis of advantages and disadvantages of each algorithm. Therefore, the proposed hybridization of algorithms and introduction of adaptive control parameters can successfully combine the advantages and avoid disadvantages of each algorithm. In this way, the proposed modifications successfully combine the advantages of each algorithm and avoid their disadvantages, thus significantly expanding the scale of implementation of the proposed algorithms for complex optimization problems...
PB  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Višekriterijumska optimizacija planetarnih prenosnika adaptivnim hibridnim metaheurističkim algoritmima
T1  - Multi-objective optimization of planetary gearboxes based on adaptive hybrid metaheuristic algorithms
UR  - https://hdl.handle.net/21.15107/rcub_nardus_18588
ER  - 

@phdthesis{
author = "Sedak, Miloš",
year = "2021",
abstract = "Planetarni prenosnici spadaju u grupu mehaničkih zupčastih prenosnika, koji su široko zastupljeni za transformaciju i prenos snage prvenstveno zbog kompaktnosti konstrukcije, visoke pouzdanosti i stepena iskorišćenja. Polazeći od funkcije, koju treba da ispuni u okviru neke konstrukcije, kao i sve strožih zahteva u pogledu performansi prenosnika, predmet istraživanja ove doktorske disertacije je razvoj višekriterijumskog optimizacionog modela planetarnog prenosnika. Razvijeni modeli koji zadovoljavaju niz strogih zahteva u pogledu: kompaktnosti konstrukcije, minimizacije gubitaka u prenosu snage, ravnomernosti raspodele opterećenja, kao i pouzdanosti u različitim eksploatacionim uslovima. Za postavljeni problem višekriterijumske optimizacije planetarnog prenosnika formirane su odgovarajuće kriterijumske funkcije i definisan je niz funkcionalnih ograničenja, kao i odgovarajući domeni primene svih relevantnih veličina zupčastih parova sa spoljašnjim i unutrašnjim ozubljenjem i planetarnog prenosnika kao složenog sistema, u cilju nesmetane montaže, pouzdanog rada i sprezanja zupčastih parova. U okviru doktorske disertacije, razvijen je odgovarajući mehanički model za određivanje stepena iskorišćenja istovremeno spregnutih zupčastih parova, u zavisnosti od njihovih geometrijskih parametara, kao i od uslova podmazivanja. Kriterijumske funkcije formiranog višekriterijumskog optimizacionog problema su nelinearne i nekonveksne pa se globalno optimalno rešenje ne može numerički odrediti konvencionalnim metodama optimizacije. Prema tome, u cilju rešavanja ovog kompleksnog optimizacionog problema potrebno je primeniti metaheurističke optimizacione algoritme. Dakle, postoji stalna potreba za poboljšanjem postojećih i razvojem novih metaheurističkih algoritama i to razvojem adaptivnih tehnika za podešavanje upravljačkih parametara i hibridizacijom algoritama. U skladu sa tim, u okviru doktorske disertacije detaljno su razmatrani metaheuristički algoritmi, koji pripadaju grupi evolutivnih algoritama, kao što su algoritam diferencijalne evolucije (Differential Evolution, DE), genetski algoritam (Genetic Algorithm, GA) kao i algoritmi inspirisani biološkim sistemima u prirodi, i to algoritam optimizacije rojem čestica (Partical Swarm Optimization, PSO). U cilju otklanjanja nedostataka metaheurističkih algoritama koji se javljaju tokom optimizacionog procesa, algoritmi predloženi u okviru disertacije su modifikovani kroz: razvoj adaptivnih mehanizama za podešavanje vrednosti upravljačkih parametara, i hibridizaciju adekvatnih algoritama. U cilju formiranja efikasnog hibridnog algoritma, procesu hibridizacije je prethodila detaljna numerička simulacija i statistička analiza performansi razmatranih algoritama. Prema tome, hibridizacijom algoritama postignuto je adekvatno iskorišćenje prednosti jednog i istovremena eliminacija nedostataka drugog algoritma..., Planetary gearboxes have a wide application in the field of transformation and transmission of power from the drive to the working machine, due to the compact structure, high reliability and efficiency. Due to the increasingly stringent performance requirements, which planetary gearboxes must satisfy, the research in this dissertation is focused on the problem of multi-objective non-linear optimization of planetary gearbox based on hybrid metaheuristic algorithm, which satisfies a number of strict requirements, such as: compact construction, minimization of power loss, load distribution and reliability in different operating conditions. In this work the formulations of the objective functions for the considered multiobjective optimization problem of planetary gearbox have been outlined along with the appropriate constraints. The formulated constraints have been analyzed and appropriate domains of practical applications of internal and external gear pairs have been formulated, with the aim to ensure proper working, mounting and meshing of considered gears. Furthermore, the theoretical formulation and numerical procedure for the calculation of the planetary gearbox power efficiency has been developed in this work. However, the objective functions and developed constraints of the considered Multiobjective planetary gearbox optimization problem are nonlinear and multimodal functions, and therefore the global optimal solution cannot be obtained using the conventional optimization methods. Therefore, in order to solve this multiobjective and complex optimization problem, the research in this dissertation is focused on metaheuristic optimization algorithms, which belong to the group of evolutionary algorithms, including: differential evolution algorithm and genetic algorithm, as well as the algorithms inspired by the biological systems, such as particle swarm optimization algorithm. To overcome difficulties in solving complex optimization problems, in this thesis the considered algorithms are modified with the development of adaptive techniques for setting the values of control parameters and hybridization of algorithms. In order to create an effective hybrid algorithm, the hybridization process has been preceded by extensive numerical simulations and statistical analysis of advantages and disadvantages of each algorithm. Therefore, the proposed hybridization of algorithms and introduction of adaptive control parameters can successfully combine the advantages and avoid disadvantages of each algorithm. In this way, the proposed modifications successfully combine the advantages of each algorithm and avoid their disadvantages, thus significantly expanding the scale of implementation of the proposed algorithms for complex optimization problems...",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Višekriterijumska optimizacija planetarnih prenosnika adaptivnim hibridnim metaheurističkim algoritmima, Multi-objective optimization of planetary gearboxes based on adaptive hybrid metaheuristic algorithms",
url = "https://hdl.handle.net/21.15107/rcub_nardus_18588"
}

Sedak, M.. (2021). Višekriterijumska optimizacija planetarnih prenosnika adaptivnim hibridnim metaheurističkim algoritmima. 
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_18588

Sedak M. Višekriterijumska optimizacija planetarnih prenosnika adaptivnim hibridnim metaheurističkim algoritmima. 2021;.
https://hdl.handle.net/21.15107/rcub_nardus_18588 .

Sedak, Miloš, "Višekriterijumska optimizacija planetarnih prenosnika adaptivnim hibridnim metaheurističkim algoritmima" (2021),
https://hdl.handle.net/21.15107/rcub_nardus_18588 .

TY  - CONF
AU  - Milovanović, Aleksa
AU  - Sedmak, Aleksandar
AU  - Grbović, Aleksandar
AU  - Golubović, Zorana
AU  - Milošević, Miloš
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3580
AB  - Most widespread materials in Additive Manufacturing are PLA (PolyLactic Acid) and ABS (Acrylonitrile Butadiene Styrene), which are dissimilar materials in terms of printing abilities and mechanical properties. PLA material originates from renewable resources making it better solution for environment in comparison with petroleum-based ABS material. Addition of second-phase particles to polymer matrix may have a substantial influence on mechanical properties of created material. Subject of this paper are natural PLA material and advanced PLA material with addition of second-phase particles (''PLA-X'') which has similar mechanical properties as ABS material, making it a perfect PLA based substitute. Tensile tests are conducted according to ISO 527-2 standard. Subject of this paper is the analysis of fracture behaviour of PLA and advanced PLA-X material, which ranges from brittle to formation of large craze zones before fracture. Analysis is conducted for five batches of both materials, with variation in printing parameters. The main focus of this research was to evaluate the influence of second-phase particles on fracture behaviour of PLA and advanced PLA-X material.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)
T1  - Influence of second-phase particles on fracture behavior of PLA and advanced PLA-X material
EP  - 126
SP  - 122
VL  - 31
DO  - 10.1016/j.prostr.2021.03.020
ER  - 

@conference{
author = "Milovanović, Aleksa and Sedmak, Aleksandar and Grbović, Aleksandar and Golubović, Zorana and Milošević, Miloš",
year = "2021",
abstract = "Most widespread materials in Additive Manufacturing are PLA (PolyLactic Acid) and ABS (Acrylonitrile Butadiene Styrene), which are dissimilar materials in terms of printing abilities and mechanical properties. PLA material originates from renewable resources making it better solution for environment in comparison with petroleum-based ABS material. Addition of second-phase particles to polymer matrix may have a substantial influence on mechanical properties of created material. Subject of this paper are natural PLA material and advanced PLA material with addition of second-phase particles (''PLA-X'') which has similar mechanical properties as ABS material, making it a perfect PLA based substitute. Tensile tests are conducted according to ISO 527-2 standard. Subject of this paper is the analysis of fracture behaviour of PLA and advanced PLA-X material, which ranges from brittle to formation of large craze zones before fracture. Analysis is conducted for five batches of both materials, with variation in printing parameters. The main focus of this research was to evaluate the influence of second-phase particles on fracture behaviour of PLA and advanced PLA-X material.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)",
title = "Influence of second-phase particles on fracture behavior of PLA and advanced PLA-X material",
pages = "126-122",
volume = "31",
doi = "10.1016/j.prostr.2021.03.020"
}

Milovanović, A., Sedmak, A., Grbović, A., Golubović, Z.,& Milošević, M.. (2021). Influence of second-phase particles on fracture behavior of PLA and advanced PLA-X material. in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)
Elsevier Science Bv, Amsterdam., 31, 122-126.
https://doi.org/10.1016/j.prostr.2021.03.020

Milovanović A, Sedmak A, Grbović A, Golubović Z, Milošević M. Influence of second-phase particles on fracture behavior of PLA and advanced PLA-X material. in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020). 2021;31:122-126.
doi:10.1016/j.prostr.2021.03.020 .

Milovanović, Aleksa, Sedmak, Aleksandar, Grbović, Aleksandar, Golubović, Zorana, Milošević, Miloš, "Influence of second-phase particles on fracture behavior of PLA and advanced PLA-X material" in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020), 31 (2021):122-126,
https://doi.org/10.1016/j.prostr.2021.03.020 . .

TY  - CONF
AU  - Lazić, Vukić
AU  - Nikolić, R.
AU  - Arsić, D.
AU  - Arsić, M.
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Hadzima, B.
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3631
AB  - The problem considered in this paper is the welding technology of the steel assembly of a firefighter truck rear bridge semi-housing. Since in this procedure the welding is done of the two dissimilar steels, it is necessary to analyze effects of welding on mechanical properties and microstructure of individual joint's zones. The weldability of the base metal was considered first (semi-housing tube and flange), then the welding method and the filler metal were selected and, finally, the technological parameters of welding were calculated. The computational and experimental methods were used for the base metal weldability estimate, based on the hardness measurements in the joint's critical zones and analysis of their structures. Experimental investigations performed were aimed for verification and/or eventual correction of the proposed welding technology.
PB  - Elsevier B.V.
C3  - Transportation Research Procedia
T1  - Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection
EP  - 552
SP  - 544
VL  - 55
DO  - 10.1016/j.trpro.2021.07.020
ER  - 

@conference{
author = "Lazić, Vukić and Nikolić, R. and Arsić, D. and Arsić, M. and Popović, Olivera and Prokić-Cvetković, Radica and Hadzima, B.",
year = "2021",
abstract = "The problem considered in this paper is the welding technology of the steel assembly of a firefighter truck rear bridge semi-housing. Since in this procedure the welding is done of the two dissimilar steels, it is necessary to analyze effects of welding on mechanical properties and microstructure of individual joint's zones. The weldability of the base metal was considered first (semi-housing tube and flange), then the welding method and the filler metal were selected and, finally, the technological parameters of welding were calculated. The computational and experimental methods were used for the base metal weldability estimate, based on the hardness measurements in the joint's critical zones and analysis of their structures. Experimental investigations performed were aimed for verification and/or eventual correction of the proposed welding technology.",
publisher = "Elsevier B.V.",
journal = "Transportation Research Procedia",
title = "Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection",
pages = "552-544",
volume = "55",
doi = "10.1016/j.trpro.2021.07.020"
}

Lazić, V., Nikolić, R., Arsić, D., Arsić, M., Popović, O., Prokić-Cvetković, R.,& Hadzima, B.. (2021). Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection. in Transportation Research Procedia
Elsevier B.V.., 55, 544-552.
https://doi.org/10.1016/j.trpro.2021.07.020

Lazić V, Nikolić R, Arsić D, Arsić M, Popović O, Prokić-Cvetković R, Hadzima B. Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection. in Transportation Research Procedia. 2021;55:544-552.
doi:10.1016/j.trpro.2021.07.020 .

Lazić, Vukić, Nikolić, R., Arsić, D., Arsić, M., Popović, Olivera, Prokić-Cvetković, Radica, Hadzima, B., "Analysis of welding of the rear bridge semi-housing assembly of a firefighter truck by the semi-automatic procedure in gas protection" in Transportation Research Procedia, 55 (2021):544-552,
https://doi.org/10.1016/j.trpro.2021.07.020 . .

TY  - JOUR
AU  - Tanasković, Jovan
AU  - Franklin, F.
AU  - Mitrović, A.
AU  - Disić, A.
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3583
AB  - The aim of this research work is investigations of absorption characteristics of a circular seamless tube collision absorber filled by rigid polyurethane (PU) foam under axial load. Shrinking of circular tube passing through cone bushing starts after absorber is activated at the moment of collision. The energy absorption realises in three ways: elastic-plastic deformation of the tube wall, friction between absorption elements and compression the rigid PU foam inside the tube. Using rigid PU foam, as the seamless tube filler, in the process of collision energy absorption increases absorption power in comparing to with only empty tube, as well as gives gradual increases of deformation resistance during deformation process. Experimental research was prepared and realized in the laboratory using the scaled samples. The effect of rigid PU foam, configuration of absorber filled by PU foam on the absorption power and manufacturing technology of the samples, are considered and discussed in this paper. The results indicate that the shrinking foam filled tube absorber has for about 18% bigger absorption power than the empty one. Formation of numerical model and numerical analyses of shrinking foam filled tube absorber were realized using ANSYS software package. Force vs. stroke (F(s)) diagrams obtained by tests and numerical analyses are in a good correlation which confirms formed numerical model as a suitable for further quasi-static analyses and for dimensioning the similar types of absorber.
PB  - Sage Publications Ltd, London
T2  - Proceedings of The Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit
T1  - Experimental research of absorption properties of rigid foam filled circular seamless tube energy absorber under quasi-static axial load
EP  - 992
IS  - 8
SP  - 982
VL  - 235
DO  - 10.1177/0954409720976034
ER  - 

@article{
author = "Tanasković, Jovan and Franklin, F. and Mitrović, A. and Disić, A.",
year = "2021",
abstract = "The aim of this research work is investigations of absorption characteristics of a circular seamless tube collision absorber filled by rigid polyurethane (PU) foam under axial load. Shrinking of circular tube passing through cone bushing starts after absorber is activated at the moment of collision. The energy absorption realises in three ways: elastic-plastic deformation of the tube wall, friction between absorption elements and compression the rigid PU foam inside the tube. Using rigid PU foam, as the seamless tube filler, in the process of collision energy absorption increases absorption power in comparing to with only empty tube, as well as gives gradual increases of deformation resistance during deformation process. Experimental research was prepared and realized in the laboratory using the scaled samples. The effect of rigid PU foam, configuration of absorber filled by PU foam on the absorption power and manufacturing technology of the samples, are considered and discussed in this paper. The results indicate that the shrinking foam filled tube absorber has for about 18% bigger absorption power than the empty one. Formation of numerical model and numerical analyses of shrinking foam filled tube absorber were realized using ANSYS software package. Force vs. stroke (F(s)) diagrams obtained by tests and numerical analyses are in a good correlation which confirms formed numerical model as a suitable for further quasi-static analyses and for dimensioning the similar types of absorber.",
publisher = "Sage Publications Ltd, London",
journal = "Proceedings of The Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit",
title = "Experimental research of absorption properties of rigid foam filled circular seamless tube energy absorber under quasi-static axial load",
pages = "992-982",
number = "8",
volume = "235",
doi = "10.1177/0954409720976034"
}

Tanasković, J., Franklin, F., Mitrović, A.,& Disić, A.. (2021). Experimental research of absorption properties of rigid foam filled circular seamless tube energy absorber under quasi-static axial load. in Proceedings of The Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit
Sage Publications Ltd, London., 235(8), 982-992.
https://doi.org/10.1177/0954409720976034

Tanasković J, Franklin F, Mitrović A, Disić A. Experimental research of absorption properties of rigid foam filled circular seamless tube energy absorber under quasi-static axial load. in Proceedings of The Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit. 2021;235(8):982-992.
doi:10.1177/0954409720976034 .

Tanasković, Jovan, Franklin, F., Mitrović, A., Disić, A., "Experimental research of absorption properties of rigid foam filled circular seamless tube energy absorber under quasi-static axial load" in Proceedings of The Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit, 235, no. 8 (2021):982-992,
https://doi.org/10.1177/0954409720976034 . .

TY  - CONF
AU  - Zrnić, Nenad
AU  - Popović, Tamara
AU  - Milojević, Goran
AU  - Kosanić, Nenad
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5438
AB  - This paper presents the research, development and application of Industry 4.0 in Intralogistics in the last five years.
The progress made in Intralogistics, using Industry 4.0, is presented. An overview of the basic principles and elements of
Industry 4.0 as well as its impact in the field of Intralogistics is given. Intralogistics is a field that is still being researched
and has great potential for further development. Finally, the aim of this paper is to focus on sustainability parameters,
technology and elements that still need to be worked on.
PB  - Faculty of Mechanical and Civil Engineering in Kraljevo
C3  - Proceedings of X International Conference “Heavy Machinery-HM 2021”
T1  - A Survey of Research on Industry 4.0 in Intralogistics
EP  - B.8
SP  - B.1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5438
ER  - 

@conference{
author = "Zrnić, Nenad and Popović, Tamara and Milojević, Goran and Kosanić, Nenad",
year = "2021",
abstract = "This paper presents the research, development and application of Industry 4.0 in Intralogistics in the last five years.
The progress made in Intralogistics, using Industry 4.0, is presented. An overview of the basic principles and elements of
Industry 4.0 as well as its impact in the field of Intralogistics is given. Intralogistics is a field that is still being researched
and has great potential for further development. Finally, the aim of this paper is to focus on sustainability parameters,
technology and elements that still need to be worked on.",
publisher = "Faculty of Mechanical and Civil Engineering in Kraljevo",
journal = "Proceedings of X International Conference “Heavy Machinery-HM 2021”",
title = "A Survey of Research on Industry 4.0 in Intralogistics",
pages = "B.8-B.1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5438"
}

Zrnić, N., Popović, T., Milojević, G.,& Kosanić, N.. (2021). A Survey of Research on Industry 4.0 in Intralogistics. in Proceedings of X International Conference “Heavy Machinery-HM 2021”
Faculty of Mechanical and Civil Engineering in Kraljevo., B.1-B.8.
https://hdl.handle.net/21.15107/rcub_machinery_5438

Zrnić N, Popović T, Milojević G, Kosanić N. A Survey of Research on Industry 4.0 in Intralogistics. in Proceedings of X International Conference “Heavy Machinery-HM 2021”. 2021;:B.1-B.8.
https://hdl.handle.net/21.15107/rcub_machinery_5438 .

Zrnić, Nenad, Popović, Tamara, Milojević, Goran, Kosanić, Nenad, "A Survey of Research on Industry 4.0 in Intralogistics" in Proceedings of X International Conference “Heavy Machinery-HM 2021” (2021):B.1-B.8,
https://hdl.handle.net/21.15107/rcub_machinery_5438 .

TY  - JOUR
AU  - Lazarević, Mihailo
AU  - Mandić, Petar
AU  - Ostojić, Srdan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3584
AB  - Recently, calculus of general order alpha is an element of R has attracted attention in scientific literature, where fractional operators are often used for control issues and the modeling of the dynamics of complex systems. In this work, some attention will be devoted to the problem of viscous friction in robotic joints. The calculus of general order and the calculus of variations are utilized for the modeling of viscous friction which is extended to the fractional derivative of the angular displacement. In addition, to solve the output tracking problem of a robotic manipulator with three DOFs with revolute joints in the presence of model uncertainties, robust advanced iterative learning control (AILC) is introduced. First, a feedback linearization procedure of a nonlinear robotic system is applied. Then, the proposed intelligent feedforward-feedback AILC algorithm is introduced. The convergence of the proposed AILC scheme is established in the time domain in detail. Finally, simulations on the given robotic arm system confirm the effectiveness of the robust AILC method.
PB  - Sage Publications Ltd, London
T2  - Proceedings of The Institution of Mechanical Engineers Part C-Journal of Mechanical Engineering Scie
T1  - Further results on advanced robust iterative learning control and modeling of robotic systems
EP  - 4734
IS  - 20
SP  - 4719
VL  - 235
DO  - 10.1177/0954406220965996
ER  - 

@article{
author = "Lazarević, Mihailo and Mandić, Petar and Ostojić, Srdan",
year = "2021",
abstract = "Recently, calculus of general order alpha is an element of R has attracted attention in scientific literature, where fractional operators are often used for control issues and the modeling of the dynamics of complex systems. In this work, some attention will be devoted to the problem of viscous friction in robotic joints. The calculus of general order and the calculus of variations are utilized for the modeling of viscous friction which is extended to the fractional derivative of the angular displacement. In addition, to solve the output tracking problem of a robotic manipulator with three DOFs with revolute joints in the presence of model uncertainties, robust advanced iterative learning control (AILC) is introduced. First, a feedback linearization procedure of a nonlinear robotic system is applied. Then, the proposed intelligent feedforward-feedback AILC algorithm is introduced. The convergence of the proposed AILC scheme is established in the time domain in detail. Finally, simulations on the given robotic arm system confirm the effectiveness of the robust AILC method.",
publisher = "Sage Publications Ltd, London",
journal = "Proceedings of The Institution of Mechanical Engineers Part C-Journal of Mechanical Engineering Scie",
title = "Further results on advanced robust iterative learning control and modeling of robotic systems",
pages = "4734-4719",
number = "20",
volume = "235",
doi = "10.1177/0954406220965996"
}

Lazarević, M., Mandić, P.,& Ostojić, S.. (2021). Further results on advanced robust iterative learning control and modeling of robotic systems. in Proceedings of The Institution of Mechanical Engineers Part C-Journal of Mechanical Engineering Scie
Sage Publications Ltd, London., 235(20), 4719-4734.
https://doi.org/10.1177/0954406220965996

Lazarević M, Mandić P, Ostojić S. Further results on advanced robust iterative learning control and modeling of robotic systems. in Proceedings of The Institution of Mechanical Engineers Part C-Journal of Mechanical Engineering Scie. 2021;235(20):4719-4734.
doi:10.1177/0954406220965996 .

Lazarević, Mihailo, Mandić, Petar, Ostojić, Srdan, "Further results on advanced robust iterative learning control and modeling of robotic systems" in Proceedings of The Institution of Mechanical Engineers Part C-Journal of Mechanical Engineering Scie, 235, no. 20 (2021):4719-4734,
https://doi.org/10.1177/0954406220965996 . .

TY  - CONF
AU  - Milovanović, Aleksa
AU  - Milošević, Miloš
AU  - Mladenović, Goran
AU  - Travica, Milan
AU  - Mitrović, Nenad
AU  - Kirin, Snežana
AU  - Trajković, Isaak
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7360
AB  - Modern home windows include new approaches in their design and new material utilization to achieve best
resistance to harsh weather conditions and to achieve best possible thermal insulation. Chosen internal
structure of window frame and selected material affect on structural life. Integrity assessment of home window
frames covers experimental and numerical approaches, including experimental DIC method (Digital Image
Correlation-DIC) and FEA (Finite Element Analysis) numerical method. The aim of this research is to find the
matching between both techniques and to use only numerical method in future to assess the structural life of
home window frames with different internal structures in the design and different materials. Experimental
testing is performed on the Universal tensile testing machine ‘’Shimadzu AGS-X’’ with 100kN load capacity,
which is sufficient for home window frame testing. DIC cameras are used for recording of the experimental
technique and the output are displacements and deformations on observed structure. FEA simulation accepts
the before experimental conditions, i.e. maximal load, material characteristics and geometry. Matching of
experimental results and attained FEA simulation will allow for easier Integrity assessment using only
numerical simulations for future tests. Therefore, with mentioned technique new internal structures of windows
and different materials can be simulated and the obtained results will show if the chosen home window frame
structure and material selection is sufficient enough for practical use.
PB  - Innovation Center of Faculty of Mechanical Engineering
C3  - International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor)
T1  - Experimental and numerical integrity assessment of home window profiles and frames
SP  - 10
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7360
ER  - 

@conference{
author = "Milovanović, Aleksa and Milošević, Miloš and Mladenović, Goran and Travica, Milan and Mitrović, Nenad and Kirin, Snežana and Trajković, Isaak",
year = "2020",
abstract = "Modern home windows include new approaches in their design and new material utilization to achieve best
resistance to harsh weather conditions and to achieve best possible thermal insulation. Chosen internal
structure of window frame and selected material affect on structural life. Integrity assessment of home window
frames covers experimental and numerical approaches, including experimental DIC method (Digital Image
Correlation-DIC) and FEA (Finite Element Analysis) numerical method. The aim of this research is to find the
matching between both techniques and to use only numerical method in future to assess the structural life of
home window frames with different internal structures in the design and different materials. Experimental
testing is performed on the Universal tensile testing machine ‘’Shimadzu AGS-X’’ with 100kN load capacity,
which is sufficient for home window frame testing. DIC cameras are used for recording of the experimental
technique and the output are displacements and deformations on observed structure. FEA simulation accepts
the before experimental conditions, i.e. maximal load, material characteristics and geometry. Matching of
experimental results and attained FEA simulation will allow for easier Integrity assessment using only
numerical simulations for future tests. Therefore, with mentioned technique new internal structures of windows
and different materials can be simulated and the obtained results will show if the chosen home window frame
structure and material selection is sufficient enough for practical use.",
publisher = "Innovation Center of Faculty of Mechanical Engineering",
journal = "International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor)",
title = "Experimental and numerical integrity assessment of home window profiles and frames",
pages = "10",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7360"
}

Milovanović, A., Milošević, M., Mladenović, G., Travica, M., Mitrović, N., Kirin, S.,& Trajković, I.. (2020). Experimental and numerical integrity assessment of home window profiles and frames. in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor)
Innovation Center of Faculty of Mechanical Engineering., 10.
https://hdl.handle.net/21.15107/rcub_machinery_7360

Milovanović A, Milošević M, Mladenović G, Travica M, Mitrović N, Kirin S, Trajković I. Experimental and numerical integrity assessment of home window profiles and frames. in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor). 2020;:10.
https://hdl.handle.net/21.15107/rcub_machinery_7360 .

Milovanović, Aleksa, Milošević, Miloš, Mladenović, Goran, Travica, Milan, Mitrović, Nenad, Kirin, Snežana, Trajković, Isaak, "Experimental and numerical integrity assessment of home window profiles and frames" in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor) (2020):10,
https://hdl.handle.net/21.15107/rcub_machinery_7360 .

TY  - JOUR
AU  - Tomović, Aleksandar
AU  - Šalinić, Slaviša
AU  - Obradović, Aleksandar
AU  - Grbović, Aleksandar
AU  - Milovančević, Milorad
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3269
AB  - In this paper, the coupled axial-bending vibration of planar serial frame structures composed of rigid bodies and Euler-Bernoulli beam segments is considered. The corresponding mode orthogonality conditions for this kind of structures are derived. It is assumed that the mass centers of rigid bodies have both the transverse and the axial eccentricity with respect to beam neutral axes and that the mass centers are located in the plane in which the rigid bodies perform planar motion. The system responses to initial excitation in the case of distinct as well as repeated natural frequencies are considered. Theoretical considerations are accompanied by four numerical examples.
PB  - Elsevier Science Inc, New York
T2  - Applied Mathematical Modelling
T1  - Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments
EP  - 1167
SP  - 1148
VL  - 77
DO  - 10.1016/j.apm.2019.09.008
ER  - 

@article{
author = "Tomović, Aleksandar and Šalinić, Slaviša and Obradović, Aleksandar and Grbović, Aleksandar and Milovančević, Milorad",
year = "2020",
abstract = "In this paper, the coupled axial-bending vibration of planar serial frame structures composed of rigid bodies and Euler-Bernoulli beam segments is considered. The corresponding mode orthogonality conditions for this kind of structures are derived. It is assumed that the mass centers of rigid bodies have both the transverse and the axial eccentricity with respect to beam neutral axes and that the mass centers are located in the plane in which the rigid bodies perform planar motion. The system responses to initial excitation in the case of distinct as well as repeated natural frequencies are considered. Theoretical considerations are accompanied by four numerical examples.",
publisher = "Elsevier Science Inc, New York",
journal = "Applied Mathematical Modelling",
title = "Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments",
pages = "1167-1148",
volume = "77",
doi = "10.1016/j.apm.2019.09.008"
}

Tomović, A., Šalinić, S., Obradović, A., Grbović, A.,& Milovančević, M.. (2020). Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments. in Applied Mathematical Modelling
Elsevier Science Inc, New York., 77, 1148-1167.
https://doi.org/10.1016/j.apm.2019.09.008

Tomović A, Šalinić S, Obradović A, Grbović A, Milovančević M. Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments. in Applied Mathematical Modelling. 2020;77:1148-1167.
doi:10.1016/j.apm.2019.09.008 .

Tomović, Aleksandar, Šalinić, Slaviša, Obradović, Aleksandar, Grbović, Aleksandar, Milovančević, Milorad, "Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments" in Applied Mathematical Modelling, 77 (2020):1148-1167,
https://doi.org/10.1016/j.apm.2019.09.008 . .

TY  - THES
AU  - Jeremić, Bojan
PY  - 2020
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=8071
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:23539/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=27863561
UR  - https://nardus.mpn.gov.rs/handle/123456789/18260
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4035
AB  - У овој докторској дисертацији уопштење класичног проблемабрахистохроног кретања материјалне тачке у вертикалној равни, чије се кретањереализује идеалном везом без активних управљачких сила, односи се нахолономне и нехолономне механичке системе у оквиру којих постоје и тачкепроменљиве масе. Брахистохроно кретање реализује се, у складу са класичнимбрахистохроним проблемом, без активних управљачких сила. Улогу управљањапреузимају реакције идеалних веза, где треба имати у виду да је снагауправљачких сила током брахистохроног кретања једнака нули...
AB  - In this doctoral dissertation, the generalization of the classical problem ofbrachistochronic motion of the particle in a vertical plane, whose motion is realized byan ideal constraint without active control forces, refers to holonomic and nonholonomicmechanical systems within which there are also variable mass particles. Thebrachistochronic motion is realized in accordance with the classical brachistochroneproblem, without active control forces. The role of control is assumedby the reactions ofideal constraints, where one should bear in mind that the power of the control forcesduring brachistochronic motion is equal to zero...
PB  - Универзитет у Београду, Машински факултет
T2  - Универзитет у Београду
T1  - Реализација брахистохроног кретања механичких система променљиве масе идеалним везама са ограниченим реакцијама
UR  - https://hdl.handle.net/21.15107/rcub_nardus_18260
ER  - 

@phdthesis{
author = "Jeremić, Bojan",
year = "2020",
abstract = "У овој докторској дисертацији уопштење класичног проблемабрахистохроног кретања материјалне тачке у вертикалној равни, чије се кретањереализује идеалном везом без активних управљачких сила, односи се нахолономне и нехолономне механичке системе у оквиру којих постоје и тачкепроменљиве масе. Брахистохроно кретање реализује се, у складу са класичнимбрахистохроним проблемом, без активних управљачких сила. Улогу управљањапреузимају реакције идеалних веза, где треба имати у виду да је снагауправљачких сила током брахистохроног кретања једнака нули..., In this doctoral dissertation, the generalization of the classical problem ofbrachistochronic motion of the particle in a vertical plane, whose motion is realized byan ideal constraint without active control forces, refers to holonomic and nonholonomicmechanical systems within which there are also variable mass particles. Thebrachistochronic motion is realized in accordance with the classical brachistochroneproblem, without active control forces. The role of control is assumedby the reactions ofideal constraints, where one should bear in mind that the power of the control forcesduring brachistochronic motion is equal to zero...",
publisher = "Универзитет у Београду, Машински факултет",
journal = "Универзитет у Београду",
title = "Реализација брахистохроног кретања механичких система променљиве масе идеалним везама са ограниченим реакцијама",
url = "https://hdl.handle.net/21.15107/rcub_nardus_18260"
}

Jeremić, B.. (2020). Реализација брахистохроног кретања механичких система променљиве масе идеалним везама са ограниченим реакцијама. in Универзитет у Београду
Универзитет у Београду, Машински факултет..
https://hdl.handle.net/21.15107/rcub_nardus_18260

Jeremić B. Реализација брахистохроног кретања механичких система променљиве масе идеалним везама са ограниченим реакцијама. in Универзитет у Београду. 2020;.
https://hdl.handle.net/21.15107/rcub_nardus_18260 .

Jeremić, Bojan, "Реализација брахистохроног кретања механичких система променљиве масе идеалним везама са ограниченим реакцијама" in Универзитет у Београду (2020),
https://hdl.handle.net/21.15107/rcub_nardus_18260 .

TY  - JOUR
AU  - Bošnjak, Srđan
AU  - Zrnić, Nenad
AU  - Momčilović, Dejan B.
AU  - Gnjatović, Nebojša
AU  - Milenović, Ivan Lj.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3400
AB  - Tie-rods of the bucket wheel and counterweight booms are vital parts of the bucket wheel excavator slewing superstructure. This paper is dedicated to the problem of identifying the stress state of the critical cross-section ('net section') of the eye plates on these tie-rods. It presents the results of the experimental and numerical investigations carried out on the eyebar model. The results show the appearance of a plastic deformation in the zone near the contour of the hole even when the eye is subjected to the loads within the range of the permissible loads prescribed by the standard DIN 22261-2. Plastification in the eye net section occurs across the full thickness of the plate, but it does not jeopardize the integrity of the structure. The stress value in the eye net section, calculated in accordance with the standard DIN 22261-2, is significantly lower than the actual stress values around the hole and serves only as a comparative value for the static strength proof for the eye.
PB  - Elsevier Sci Ltd, Oxford
T2  - Engineering Structures
T1  - Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state
VL  - 207
DO  - 10.1016/j.engstruct.2020.110233
ER  - 

@article{
author = "Bošnjak, Srđan and Zrnić, Nenad and Momčilović, Dejan B. and Gnjatović, Nebojša and Milenović, Ivan Lj.",
year = "2020",
abstract = "Tie-rods of the bucket wheel and counterweight booms are vital parts of the bucket wheel excavator slewing superstructure. This paper is dedicated to the problem of identifying the stress state of the critical cross-section ('net section') of the eye plates on these tie-rods. It presents the results of the experimental and numerical investigations carried out on the eyebar model. The results show the appearance of a plastic deformation in the zone near the contour of the hole even when the eye is subjected to the loads within the range of the permissible loads prescribed by the standard DIN 22261-2. Plastification in the eye net section occurs across the full thickness of the plate, but it does not jeopardize the integrity of the structure. The stress value in the eye net section, calculated in accordance with the standard DIN 22261-2, is significantly lower than the actual stress values around the hole and serves only as a comparative value for the static strength proof for the eye.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Engineering Structures",
title = "Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state",
volume = "207",
doi = "10.1016/j.engstruct.2020.110233"
}

Bošnjak, S., Zrnić, N., Momčilović, D. B., Gnjatović, N.,& Milenović, I. Lj.. (2020). Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state. in Engineering Structures
Elsevier Sci Ltd, Oxford., 207.
https://doi.org/10.1016/j.engstruct.2020.110233

Bošnjak S, Zrnić N, Momčilović DB, Gnjatović N, Milenović IL. Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state. in Engineering Structures. 2020;207.
doi:10.1016/j.engstruct.2020.110233 .

Bošnjak, Srđan, Zrnić, Nenad, Momčilović, Dejan B., Gnjatović, Nebojša, Milenović, Ivan Lj., "Tie-rods of the bucket wheel excavator slewing superstructure: A study of the eye plate stress state" in Engineering Structures, 207 (2020),
https://doi.org/10.1016/j.engstruct.2020.110233 . .

TY  - CONF
AU  - Golubović, Zorana
AU  - Milovanović, Aleksa
AU  - Trajković, Isaak
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7364
AB  - Development of 3D printing in medical and dental applications has advanced significantly in recent years. 3D
technologies are commercially available, i.e. 3D printing and 3D scanning, allowing dentists to easily scan and
record state of hard and soft tissues following 3D printing of dental models or supporting structures-like surgical
guides and aligners. Thereafter, dental technicians work with these 3D printed dental models of upper and
lower jaw, as they previously have been working with plaster models, and because of attainable high
dimensional accuracy of these dental models 3D printing technology found its way in dentistry and will improve
both in today’s application and will expand the range of possible applications in dentistry.
The aim of this paper is to present stereolithography (SLA) 3D printing technology of dental working models.
SLA technology is mainly applied in rapid prototyping, but due to exceptional dimensional accuracy it easily
found its application in dentistry, where accuracy is of utmost importance. SLA technology works in layer-bylayer
manner, using UV lasers to polymerize, i.e. solidify, liquid photopolymer resin placed in a vat. Only
accuracy issue of this technology occurs when using more layers to build a model, i.e. if an error appears at a
certain layer it will stack on succeeding layers and will create notable dimensional mismatch. Materials used
in this research are grey standard resin, dental model resin, long-term biocompatible clear resin and
biocompatible photopolymer resin. Created dental models are used for planning and making dental crowns
and bridges.
C3  - International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor)
T1  - Possibilities of application of 3D printing in contemporary dentistry
SP  - 69
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7364
ER  - 

@conference{
author = "Golubović, Zorana and Milovanović, Aleksa and Trajković, Isaak",
year = "2020",
abstract = "Development of 3D printing in medical and dental applications has advanced significantly in recent years. 3D
technologies are commercially available, i.e. 3D printing and 3D scanning, allowing dentists to easily scan and
record state of hard and soft tissues following 3D printing of dental models or supporting structures-like surgical
guides and aligners. Thereafter, dental technicians work with these 3D printed dental models of upper and
lower jaw, as they previously have been working with plaster models, and because of attainable high
dimensional accuracy of these dental models 3D printing technology found its way in dentistry and will improve
both in today’s application and will expand the range of possible applications in dentistry.
The aim of this paper is to present stereolithography (SLA) 3D printing technology of dental working models.
SLA technology is mainly applied in rapid prototyping, but due to exceptional dimensional accuracy it easily
found its application in dentistry, where accuracy is of utmost importance. SLA technology works in layer-bylayer
manner, using UV lasers to polymerize, i.e. solidify, liquid photopolymer resin placed in a vat. Only
accuracy issue of this technology occurs when using more layers to build a model, i.e. if an error appears at a
certain layer it will stack on succeeding layers and will create notable dimensional mismatch. Materials used
in this research are grey standard resin, dental model resin, long-term biocompatible clear resin and
biocompatible photopolymer resin. Created dental models are used for planning and making dental crowns
and bridges.",
journal = "International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor)",
title = "Possibilities of application of 3D printing in contemporary dentistry",
pages = "69",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7364"
}

Golubović, Z., Milovanović, A.,& Trajković, I.. (2020). Possibilities of application of 3D printing in contemporary dentistry. in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor), 69.
https://hdl.handle.net/21.15107/rcub_machinery_7364

Golubović Z, Milovanović A, Trajković I. Possibilities of application of 3D printing in contemporary dentistry. in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor). 2020;:69.
https://hdl.handle.net/21.15107/rcub_machinery_7364 .

Golubović, Zorana, Milovanović, Aleksa, Trajković, Isaak, "Possibilities of application of 3D printing in contemporary dentistry" in International conference of experimental and numerical investigations and new technologies (2020 ; Zlatibor) (2020):69,
https://hdl.handle.net/21.15107/rcub_machinery_7364 .

TY  - CONF
AU  - Golubović, Zorana
AU  - Milovanović, Aleksa
AU  - Trajković, Isaak
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6303
AB  - Development of 3D printing in medical and dental applications has advanced significantly in recent years. 3D technologies are commercially available, i.e. 3D printing and 3D scanning, allowing dentists to easily scan and record state of hard and soft tissues following 3D printing of dental models or supporting structures-like surgical guides and aligners. Thereafter, dental technicians work with these 3D printed dental models of upper and lower jaw, as they previously have been working with plaster models, and because of attainable high dimensional accuracy of these dental models 3D printing technology found its way in dentistry and will improve both in today’s application and will expand the range of possible applications in dentistry. The aim of this paper is to present stereolithography (SLA) 3D printing technology of dental working models. SLA technology is mainly applied in rapid prototyping, but due to exceptional dimensional accuracy it easily found its application in dentistry, where accuracy is of utmost importance. SLA technology works in layer-by-layer manner, using UV lasers to polymerize, i.e. solidify, liquid photopolymer resin placed in a vat. Only accuracy issue of this technology occurs when using more layers to build a model, i.e. if an error appears at a certain layer it will stack on succeeding layers and will create notable dimensional mismatch. Materials used in this research are grey standard resin, dental model resin, long-term biocompatible clear resin and biocompatible photopolymer resin. Created dental models are used for planning and making dental crowns and bridges.
PB  - University of Belgrade, Faculty of Mechanical Engineering
C3  - International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2021" - Book of Abstracts
T1  - Possibilities of Application of 3D Printing in Contemporary Dentistry
EP  - 69
SP  - 69
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6303
ER  - 

@conference{
author = "Golubović, Zorana and Milovanović, Aleksa and Trajković, Isaak",
year = "2020",
abstract = "Development of 3D printing in medical and dental applications has advanced significantly in recent years. 3D technologies are commercially available, i.e. 3D printing and 3D scanning, allowing dentists to easily scan and record state of hard and soft tissues following 3D printing of dental models or supporting structures-like surgical guides and aligners. Thereafter, dental technicians work with these 3D printed dental models of upper and lower jaw, as they previously have been working with plaster models, and because of attainable high dimensional accuracy of these dental models 3D printing technology found its way in dentistry and will improve both in today’s application and will expand the range of possible applications in dentistry. The aim of this paper is to present stereolithography (SLA) 3D printing technology of dental working models. SLA technology is mainly applied in rapid prototyping, but due to exceptional dimensional accuracy it easily found its application in dentistry, where accuracy is of utmost importance. SLA technology works in layer-by-layer manner, using UV lasers to polymerize, i.e. solidify, liquid photopolymer resin placed in a vat. Only accuracy issue of this technology occurs when using more layers to build a model, i.e. if an error appears at a certain layer it will stack on succeeding layers and will create notable dimensional mismatch. Materials used in this research are grey standard resin, dental model resin, long-term biocompatible clear resin and biocompatible photopolymer resin. Created dental models are used for planning and making dental crowns and bridges.",
publisher = "University of Belgrade, Faculty of Mechanical Engineering",
journal = "International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2021" - Book of Abstracts",
title = "Possibilities of Application of 3D Printing in Contemporary Dentistry",
pages = "69-69",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6303"
}

Golubović, Z., Milovanović, A.,& Trajković, I.. (2020). Possibilities of Application of 3D Printing in Contemporary Dentistry. in International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2021" - Book of Abstracts
University of Belgrade, Faculty of Mechanical Engineering., 69-69.
https://hdl.handle.net/21.15107/rcub_machinery_6303

Golubović Z, Milovanović A, Trajković I. Possibilities of Application of 3D Printing in Contemporary Dentistry. in International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2021" - Book of Abstracts. 2020;:69-69.
https://hdl.handle.net/21.15107/rcub_machinery_6303 .

Golubović, Zorana, Milovanović, Aleksa, Trajković, Isaak, "Possibilities of Application of 3D Printing in Contemporary Dentistry" in International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2021" - Book of Abstracts (2020):69-69,
https://hdl.handle.net/21.15107/rcub_machinery_6303 .

TY  - CONF
AU  - Tanasković, Jovan
AU  - Dragičević, Aleksandra
AU  - Balać, Martina
AU  - Milković, Dragan
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5896
AB  - Manufacturing of railway vehicles require use of many different special support tools which have a role to simplify production process and to increase productivity. Beside, design of these elements requires a special care about worker safety. Subject of this paper is static strength analysis of the mobile lifting platform designed for railway industry. This type of mobile platform is used for worker outside of the wagon body and can provide operation up to 4000 mm. Platform was designed from steel tubes, square and circular cross section joined by welding and moving joints. Hydraulic cylinder, with adequate and controlled initial force, is used for platform lifting and lowering platform. Static strength analysis was done using finite element method by SolidWorks software package. Bearing in mind very complex construction of mobile platform, simplification of numerical model was done. Platform structure was divided in three subassemblies: working platform, folding scissors and lower chassis, and for each of them numerical analyses were performed. In accordance with purchaser requests loads were applied on the working platform, while the reaction force was measured at constraints located on the lower chassis and at the joint between the piston of hydraulic cylinder and scissors structure. Next to primary analysis of the main platform structure, static strength analyses were carried out for fences and stairs. All analyses were accomplished in accordance to valid standards. Obtained results showed that the assemblies of mobile platform, including fences and stairs, are able to withstand load of workers and required equipment without permanent deformation.
PB  - Innovation Center of Faculty of Mechanical Engineering
C3  - IV International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2020, PROGRAMME AND THE BOOK OF ABSTRACTS
T1  - Static strength analysis of construction of Mobile lifting platform
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5896
ER  - 

@conference{
author = "Tanasković, Jovan and Dragičević, Aleksandra and Balać, Martina and Milković, Dragan",
year = "2020",
abstract = "Manufacturing of railway vehicles require use of many different special support tools which have a role to simplify production process and to increase productivity. Beside, design of these elements requires a special care about worker safety. Subject of this paper is static strength analysis of the mobile lifting platform designed for railway industry. This type of mobile platform is used for worker outside of the wagon body and can provide operation up to 4000 mm. Platform was designed from steel tubes, square and circular cross section joined by welding and moving joints. Hydraulic cylinder, with adequate and controlled initial force, is used for platform lifting and lowering platform. Static strength analysis was done using finite element method by SolidWorks software package. Bearing in mind very complex construction of mobile platform, simplification of numerical model was done. Platform structure was divided in three subassemblies: working platform, folding scissors and lower chassis, and for each of them numerical analyses were performed. In accordance with purchaser requests loads were applied on the working platform, while the reaction force was measured at constraints located on the lower chassis and at the joint between the piston of hydraulic cylinder and scissors structure. Next to primary analysis of the main platform structure, static strength analyses were carried out for fences and stairs. All analyses were accomplished in accordance to valid standards. Obtained results showed that the assemblies of mobile platform, including fences and stairs, are able to withstand load of workers and required equipment without permanent deformation.",
publisher = "Innovation Center of Faculty of Mechanical Engineering",
journal = "IV International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2020, PROGRAMME AND THE BOOK OF ABSTRACTS",
title = "Static strength analysis of construction of Mobile lifting platform",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5896"
}

Tanasković, J., Dragičević, A., Balać, M.,& Milković, D.. (2020). Static strength analysis of construction of Mobile lifting platform. in IV International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2020, PROGRAMME AND THE BOOK OF ABSTRACTS
Innovation Center of Faculty of Mechanical Engineering..
https://hdl.handle.net/21.15107/rcub_machinery_5896

Tanasković J, Dragičević A, Balać M, Milković D. Static strength analysis of construction of Mobile lifting platform. in IV International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2020, PROGRAMME AND THE BOOK OF ABSTRACTS. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_5896 .

Tanasković, Jovan, Dragičević, Aleksandra, Balać, Martina, Milković, Dragan, "Static strength analysis of construction of Mobile lifting platform" in IV International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2020, PROGRAMME AND THE BOOK OF ABSTRACTS (2020),
https://hdl.handle.net/21.15107/rcub_machinery_5896 .

TY  - JOUR
AU  - Tomović, Aleksandar
AU  - Šalinić, Slaviša
AU  - Obradović, Aleksandar
AU  - Grbović, Aleksandar
AU  - Milovančević, Milorad
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4326
AB  - In this paper, the coupled axial-bending vibration of planar serial frame structures composed of rigid bodies and Euler-Bernoulli beam segments is considered. The corresponding mode orthogonality conditions for this kind of structures are derived. It is assumed that the mass centers of rigid bodies have both the transverse and the axial eccentricity with respect to beam neutral axes and that the mass centers are located in the plane in which the rigid bodies perform planar motion. The system responses to initial excitation in the case of distinct as well as repeated natural frequencies are considered. Theoretical considerations are accompanied by four numerical examples.
PB  - Elsevier Science Inc, New York
T2  - Applied Mathematical Modelling
T1  - Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments
EP  - 1167
SP  - 1148
VL  - 77
DO  - 10.1016/j.apm.2019.09.008
ER  - 

@article{
author = "Tomović, Aleksandar and Šalinić, Slaviša and Obradović, Aleksandar and Grbović, Aleksandar and Milovančević, Milorad",
year = "2020",
abstract = "In this paper, the coupled axial-bending vibration of planar serial frame structures composed of rigid bodies and Euler-Bernoulli beam segments is considered. The corresponding mode orthogonality conditions for this kind of structures are derived. It is assumed that the mass centers of rigid bodies have both the transverse and the axial eccentricity with respect to beam neutral axes and that the mass centers are located in the plane in which the rigid bodies perform planar motion. The system responses to initial excitation in the case of distinct as well as repeated natural frequencies are considered. Theoretical considerations are accompanied by four numerical examples.",
publisher = "Elsevier Science Inc, New York",
journal = "Applied Mathematical Modelling",
title = "Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments",
pages = "1167-1148",
volume = "77",
doi = "10.1016/j.apm.2019.09.008"
}

Tomović, A., Šalinić, S., Obradović, A., Grbović, A.,& Milovančević, M.. (2020). Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments. in Applied Mathematical Modelling
Elsevier Science Inc, New York., 77, 1148-1167.
https://doi.org/10.1016/j.apm.2019.09.008

Tomović A, Šalinić S, Obradović A, Grbović A, Milovančević M. Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments. in Applied Mathematical Modelling. 2020;77:1148-1167.
doi:10.1016/j.apm.2019.09.008 .

Tomović, Aleksandar, Šalinić, Slaviša, Obradović, Aleksandar, Grbović, Aleksandar, Milovančević, Milorad, "Closed-form solution for the free axial-bending vibration problem of structures composed of rigid bodies and elastic beam segments" in Applied Mathematical Modelling, 77 (2020):1148-1167,
https://doi.org/10.1016/j.apm.2019.09.008 . .

TY  - JOUR
AU  - Arsić, Miodrag
AU  - Bošnjak, Srđan
AU  - Grabulov, Vencislav
AU  - Mladenović, M.
AU  - Savić, Zoran
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5232
AB  - This paper contains results of tests performed in order to determine mechanical properties
of steel P460NL1, used as filler material during the execution of welded joints. Arc welding
of samples from which the specimens were taken was carried out through the application of welding process 111, because it is one of the processes for the execution of pipelines for pressure equipment. Microspecimens with diameter of 1,5 mm were tested in order to determine tensile properties of material taken from the heat-affected zone and weld metal, while specimens with diameter of 6 mm were tested in order to determine tensile properties of parent material. Standard Charpy V-notch specimens were used in order to determine impact energy. Results of metallographic tests which refer to the structure of a pipe welded joint are also presented.
PB  - Trans Tech Publications Ltd, Switzerland
T2  - Advanced Materials Research
T1  - Testing of welded joints between pipes for pressure vessels made of hot rolled fine-grained steel P460NL1
VL  - 1157
DO  - 10.4028/www.scientific.net/AMR.1157.15
ER  - 

@article{
author = "Arsić, Miodrag and Bošnjak, Srđan and Grabulov, Vencislav and Mladenović, M. and Savić, Zoran",
year = "2020",
abstract = "This paper contains results of tests performed in order to determine mechanical properties
of steel P460NL1, used as filler material during the execution of welded joints. Arc welding
of samples from which the specimens were taken was carried out through the application of welding process 111, because it is one of the processes for the execution of pipelines for pressure equipment. Microspecimens with diameter of 1,5 mm were tested in order to determine tensile properties of material taken from the heat-affected zone and weld metal, while specimens with diameter of 6 mm were tested in order to determine tensile properties of parent material. Standard Charpy V-notch specimens were used in order to determine impact energy. Results of metallographic tests which refer to the structure of a pipe welded joint are also presented.",
publisher = "Trans Tech Publications Ltd, Switzerland",
journal = "Advanced Materials Research",
title = "Testing of welded joints between pipes for pressure vessels made of hot rolled fine-grained steel P460NL1",
volume = "1157",
doi = "10.4028/www.scientific.net/AMR.1157.15"
}

Arsić, M., Bošnjak, S., Grabulov, V., Mladenović, M.,& Savić, Z.. (2020). Testing of welded joints between pipes for pressure vessels made of hot rolled fine-grained steel P460NL1. in Advanced Materials Research
Trans Tech Publications Ltd, Switzerland., 1157.
https://doi.org/10.4028/www.scientific.net/AMR.1157.15

Arsić M, Bošnjak S, Grabulov V, Mladenović M, Savić Z. Testing of welded joints between pipes for pressure vessels made of hot rolled fine-grained steel P460NL1. in Advanced Materials Research. 2020;1157.
doi:10.4028/www.scientific.net/AMR.1157.15 .

Arsić, Miodrag, Bošnjak, Srđan, Grabulov, Vencislav, Mladenović, M., Savić, Zoran, "Testing of welded joints between pipes for pressure vessels made of hot rolled fine-grained steel P460NL1" in Advanced Materials Research, 1157 (2020),
https://doi.org/10.4028/www.scientific.net/AMR.1157.15 . .

TY  - JOUR
AU  - Pantelić, Milorad P.
AU  - Bošnjak, Srđan
AU  - Misita, Mirjana
AU  - Gnjatović, Nebojša
AU  - Stefanović, Aleksandar Z.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3285
AB  - Surface mining systems (SMSs) are among the most significant 20th century achievements in mining industry, whose significance to miners is comparable to the invention of dynamite in the 19th century. However, problems of SMS risk assessment are very scarce in relevant literature. For this reason, this paper aims to establish a consistent risk quantification approach for bucket wheel excavators (BWEs), the backbones of these systems. Based on the original structural scheme of a BWE, the risk parameters assessing criteria stemming from multidecadal experience and the database of recorded standstills (in the considered case, one hour of SMS downtime generates indirect financial losses of approximate to 15000(sic)), a study was conducted applying the Service FMECA technique to the BWE SRs2000 (one of the best-selling models from "Takraf"), with the following conclusions: (a) the material conveying subsystem is the highest contributor in the total number of mechanical and electrical failures, as well as in total downtime; (b) during the monitoring period, there were no extreme risk level failures. Besides, corrective actions for reducing risk levels of the most critical mechanical and electrical failure modes are given in the paper. The presented approach for risk quantification for a BWE can be successfully applied to other SMS subsystems, notably spreaders.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Service FMECA of a bucket wheel excavator
VL  - 108
DO  - 10.1016/j.engfailanal.2019.104289
ER  - 

@article{
author = "Pantelić, Milorad P. and Bošnjak, Srđan and Misita, Mirjana and Gnjatović, Nebojša and Stefanović, Aleksandar Z.",
year = "2020",
abstract = "Surface mining systems (SMSs) are among the most significant 20th century achievements in mining industry, whose significance to miners is comparable to the invention of dynamite in the 19th century. However, problems of SMS risk assessment are very scarce in relevant literature. For this reason, this paper aims to establish a consistent risk quantification approach for bucket wheel excavators (BWEs), the backbones of these systems. Based on the original structural scheme of a BWE, the risk parameters assessing criteria stemming from multidecadal experience and the database of recorded standstills (in the considered case, one hour of SMS downtime generates indirect financial losses of approximate to 15000(sic)), a study was conducted applying the Service FMECA technique to the BWE SRs2000 (one of the best-selling models from "Takraf"), with the following conclusions: (a) the material conveying subsystem is the highest contributor in the total number of mechanical and electrical failures, as well as in total downtime; (b) during the monitoring period, there were no extreme risk level failures. Besides, corrective actions for reducing risk levels of the most critical mechanical and electrical failure modes are given in the paper. The presented approach for risk quantification for a BWE can be successfully applied to other SMS subsystems, notably spreaders.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Service FMECA of a bucket wheel excavator",
volume = "108",
doi = "10.1016/j.engfailanal.2019.104289"
}

Pantelić, M. P., Bošnjak, S., Misita, M., Gnjatović, N.,& Stefanović, A. Z.. (2020). Service FMECA of a bucket wheel excavator. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 108.
https://doi.org/10.1016/j.engfailanal.2019.104289

Pantelić MP, Bošnjak S, Misita M, Gnjatović N, Stefanović AZ. Service FMECA of a bucket wheel excavator. in Engineering Failure Analysis. 2020;108.
doi:10.1016/j.engfailanal.2019.104289 .

Pantelić, Milorad P., Bošnjak, Srđan, Misita, Mirjana, Gnjatović, Nebojša, Stefanović, Aleksandar Z., "Service FMECA of a bucket wheel excavator" in Engineering Failure Analysis, 108 (2020),
https://doi.org/10.1016/j.engfailanal.2019.104289 . .