TY  - JOUR
AU  - Sedak, Miloš
AU  - Rosić, Božidar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3617
AB  - This paper considers the problem of constrained multi-objective non-linear optimization of planetary gearbox based on hybrid metaheuristic algorithm. Optimal design of planetary gear trains requires simultaneous minimization of multiple conflicting objectives, such as gearbox volume, center distance, contact ratio, power loss, etc. In this regard, the theoretical formulation and numerical procedure for the calculation of the planetary gearbox power efficiency has been developed. To successfully solve the stated constrained multi-objective optimization problem, in this paper a hybrid algorithm between particle swarm optimization and differential evolution algorithms has been proposed and applied to considered problem. Here, the mutation operators from the differential evolution algorithm have been incorporated into the velocity update equation of the particle swarm optimization algorithm, with the adaptive population spacing parameter employed to select the appropriate mutation operator for the current optimization condition. It has been shown that the proposed algorithm successfully obtains the solutions of the non-convex Pareto set, and reveals key insights in reducing the weight, improving efficiency and preventing premature failure of gears. Compared to other well-known algorithms, the numerical simulation results indicate that the proposed algorithm shows improved optimization performance in terms of the quality of the obtained Pareto solutions.
PB  - MDPI, Basel
T2  - Applied Sciences-Basel
T1  - Multi-Objective Optimization of Planetary Gearbox with Adaptive Hybrid Particle Swarm Differential Evolution Algorithm
IS  - 3
VL  - 11
DO  - 10.3390/app11031107
ER  - 

@article{
author = "Sedak, Miloš and Rosić, Božidar",
year = "2021",
abstract = "This paper considers the problem of constrained multi-objective non-linear optimization of planetary gearbox based on hybrid metaheuristic algorithm. Optimal design of planetary gear trains requires simultaneous minimization of multiple conflicting objectives, such as gearbox volume, center distance, contact ratio, power loss, etc. In this regard, the theoretical formulation and numerical procedure for the calculation of the planetary gearbox power efficiency has been developed. To successfully solve the stated constrained multi-objective optimization problem, in this paper a hybrid algorithm between particle swarm optimization and differential evolution algorithms has been proposed and applied to considered problem. Here, the mutation operators from the differential evolution algorithm have been incorporated into the velocity update equation of the particle swarm optimization algorithm, with the adaptive population spacing parameter employed to select the appropriate mutation operator for the current optimization condition. It has been shown that the proposed algorithm successfully obtains the solutions of the non-convex Pareto set, and reveals key insights in reducing the weight, improving efficiency and preventing premature failure of gears. Compared to other well-known algorithms, the numerical simulation results indicate that the proposed algorithm shows improved optimization performance in terms of the quality of the obtained Pareto solutions.",
publisher = "MDPI, Basel",
journal = "Applied Sciences-Basel",
title = "Multi-Objective Optimization of Planetary Gearbox with Adaptive Hybrid Particle Swarm Differential Evolution Algorithm",
number = "3",
volume = "11",
doi = "10.3390/app11031107"
}

Sedak, M.,& Rosić, B.. (2021). Multi-Objective Optimization of Planetary Gearbox with Adaptive Hybrid Particle Swarm Differential Evolution Algorithm. in Applied Sciences-Basel
MDPI, Basel., 11(3).
https://doi.org/10.3390/app11031107

Sedak M, Rosić B. Multi-Objective Optimization of Planetary Gearbox with Adaptive Hybrid Particle Swarm Differential Evolution Algorithm. in Applied Sciences-Basel. 2021;11(3).
doi:10.3390/app11031107 .

Sedak, Miloš, Rosić, Božidar, "Multi-Objective Optimization of Planetary Gearbox with Adaptive Hybrid Particle Swarm Differential Evolution Algorithm" in Applied Sciences-Basel, 11, no. 3 (2021),
https://doi.org/10.3390/app11031107 . .

TY  - JOUR
AU  - Dimić, Aleksandar
AU  - Ristivojević, Mileta
AU  - Rosić, Božidar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3606
AB  - The load distribution of simultaneously meshed gear teeth pairs has a significant influence in determining the relevant stress for the working capacity calculation of cylindrical gear pairs with respect to surface and volume strength. According to conventional calculation procedures, the influence of the boundary-ideally uniform load distribution, when all simultaneously meshed teeth pairs are equally engaged in the load transfer, on the teeth flanks stress state is taken into account by approximate expressions for contact ratio factor Z epsilon. In addition, this factor is not defined, no assumptions were given on the basis of which approximate expressions were determined, and no procedure for determining these expressions was disclosed. This paper defines a factor on the basis of which an analysis of the boundary-ideally uniform load distribution can be carried out. By observing the contact lines in the meshing area, when one and two or two and three meshed gear teeth pairs are alternating during the meshing period, a set of analytical expressions is developed to describe the boundary-ideally uniform load distribution of simultaneously meshed gear teeth pairs. Based on the developed analytical expressions, the limiting values of the gear teeth flank stresses can be determined more precisely and the degree of accuracy of the approximate expressions for the contact ratio factor which are given in conventional calculation procedures can be tested. The analysis carried out in this paper can be used for more accurate considerations of all cylindrical gear pairs occurrences which depend on load distribution, such as: load capacity, mesh stiffness, vibration, noise, energy efficiency, etc.
PB  - Springer Heidelberg, Heidelberg
T2  - Journal of The Brazilian Society of Mechanical Sciences and Engineering
T1  - Boundary load distribution of simultaneously meshed gear teeth pairs
IS  - 3
VL  - 43
DO  - 10.1007/s40430-021-02886-w
ER  - 

@article{
author = "Dimić, Aleksandar and Ristivojević, Mileta and Rosić, Božidar",
year = "2021",
abstract = "The load distribution of simultaneously meshed gear teeth pairs has a significant influence in determining the relevant stress for the working capacity calculation of cylindrical gear pairs with respect to surface and volume strength. According to conventional calculation procedures, the influence of the boundary-ideally uniform load distribution, when all simultaneously meshed teeth pairs are equally engaged in the load transfer, on the teeth flanks stress state is taken into account by approximate expressions for contact ratio factor Z epsilon. In addition, this factor is not defined, no assumptions were given on the basis of which approximate expressions were determined, and no procedure for determining these expressions was disclosed. This paper defines a factor on the basis of which an analysis of the boundary-ideally uniform load distribution can be carried out. By observing the contact lines in the meshing area, when one and two or two and three meshed gear teeth pairs are alternating during the meshing period, a set of analytical expressions is developed to describe the boundary-ideally uniform load distribution of simultaneously meshed gear teeth pairs. Based on the developed analytical expressions, the limiting values of the gear teeth flank stresses can be determined more precisely and the degree of accuracy of the approximate expressions for the contact ratio factor which are given in conventional calculation procedures can be tested. The analysis carried out in this paper can be used for more accurate considerations of all cylindrical gear pairs occurrences which depend on load distribution, such as: load capacity, mesh stiffness, vibration, noise, energy efficiency, etc.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Journal of The Brazilian Society of Mechanical Sciences and Engineering",
title = "Boundary load distribution of simultaneously meshed gear teeth pairs",
number = "3",
volume = "43",
doi = "10.1007/s40430-021-02886-w"
}

Dimić, A., Ristivojević, M.,& Rosić, B.. (2021). Boundary load distribution of simultaneously meshed gear teeth pairs. in Journal of The Brazilian Society of Mechanical Sciences and Engineering
Springer Heidelberg, Heidelberg., 43(3).
https://doi.org/10.1007/s40430-021-02886-w

Dimić A, Ristivojević M, Rosić B. Boundary load distribution of simultaneously meshed gear teeth pairs. in Journal of The Brazilian Society of Mechanical Sciences and Engineering. 2021;43(3).
doi:10.1007/s40430-021-02886-w .

Dimić, Aleksandar, Ristivojević, Mileta, Rosić, Božidar, "Boundary load distribution of simultaneously meshed gear teeth pairs" in Journal of The Brazilian Society of Mechanical Sciences and Engineering, 43, no. 3 (2021),
https://doi.org/10.1007/s40430-021-02886-w . .

TY  - JOUR
AU  - Stanković, Miloš
AU  - Marinković, Aleksandar
AU  - Grbović, Aleksandar
AU  - Mišković, Žarko
AU  - Rosić, Božidar
AU  - Mitrović, Radivoje
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3147
AB  - Purpose This paper aims to present the methodology to determine Archard's wear coefficient. By applying this coefficient into the numerical simulation of wear, it is possible to predict wear without long lasting and usually expensive experiments. Design/methodology/approach To determine necessary particles of Archard's equation and calculate wear coefficient K, an experimental investigation is proposed. Afterwards, the wear simulation is executed in FEM software ANSYS 18.1. Analytical method is offered to determine worn volume for cylinder-in-cylinder contact, based on "inclination" of inner cylinder. Findings Comparing the value of Archard's coefficient obtained by this experimental investigation with the values from the literature for the similar materials, high correlation is noted. Furthermore, numerically calculated contact pressure is confirmed with analytical method. Trend of pressure decrease due to wearing process, as well as due to increase of contact surface is observed. Practical implications - Since the prediction of the wear is closely related to the life cycle assessment of bearings, and the machines in general, it has significant practical importance for designers. Originality/ value - Determination of Archard's coefficient is usually performed by conventional pin-on-disk tribometers. This methodology offers a different approach for the determination of Archard's wear coefficient for cylinder-in-cylinder contact, which is convenient for shaft-sliding bearing contact.
PB  - Emerald Group Publishing Ltd, Bingley
T2  - Industrial Lubrication and Tribology
T1  - Determination of Archard's wear coefficient and wear simulation of sliding bearings
EP  - 125
IS  - 1
SP  - 119
VL  - 71
DO  - 10.1108/ILT-08-2018-0302
ER  - 

@article{
author = "Stanković, Miloš and Marinković, Aleksandar and Grbović, Aleksandar and Mišković, Žarko and Rosić, Božidar and Mitrović, Radivoje",
year = "2019",
abstract = "Purpose This paper aims to present the methodology to determine Archard's wear coefficient. By applying this coefficient into the numerical simulation of wear, it is possible to predict wear without long lasting and usually expensive experiments. Design/methodology/approach To determine necessary particles of Archard's equation and calculate wear coefficient K, an experimental investigation is proposed. Afterwards, the wear simulation is executed in FEM software ANSYS 18.1. Analytical method is offered to determine worn volume for cylinder-in-cylinder contact, based on "inclination" of inner cylinder. Findings Comparing the value of Archard's coefficient obtained by this experimental investigation with the values from the literature for the similar materials, high correlation is noted. Furthermore, numerically calculated contact pressure is confirmed with analytical method. Trend of pressure decrease due to wearing process, as well as due to increase of contact surface is observed. Practical implications - Since the prediction of the wear is closely related to the life cycle assessment of bearings, and the machines in general, it has significant practical importance for designers. Originality/ value - Determination of Archard's coefficient is usually performed by conventional pin-on-disk tribometers. This methodology offers a different approach for the determination of Archard's wear coefficient for cylinder-in-cylinder contact, which is convenient for shaft-sliding bearing contact.",
publisher = "Emerald Group Publishing Ltd, Bingley",
journal = "Industrial Lubrication and Tribology",
title = "Determination of Archard's wear coefficient and wear simulation of sliding bearings",
pages = "125-119",
number = "1",
volume = "71",
doi = "10.1108/ILT-08-2018-0302"
}

Stanković, M., Marinković, A., Grbović, A., Mišković, Ž., Rosić, B.,& Mitrović, R.. (2019). Determination of Archard's wear coefficient and wear simulation of sliding bearings. in Industrial Lubrication and Tribology
Emerald Group Publishing Ltd, Bingley., 71(1), 119-125.
https://doi.org/10.1108/ILT-08-2018-0302

Stanković M, Marinković A, Grbović A, Mišković Ž, Rosić B, Mitrović R. Determination of Archard's wear coefficient and wear simulation of sliding bearings. in Industrial Lubrication and Tribology. 2019;71(1):119-125.
doi:10.1108/ILT-08-2018-0302 .

Stanković, Miloš, Marinković, Aleksandar, Grbović, Aleksandar, Mišković, Žarko, Rosić, Božidar, Mitrović, Radivoje, "Determination of Archard's wear coefficient and wear simulation of sliding bearings" in Industrial Lubrication and Tribology, 71, no. 1 (2019):119-125,
https://doi.org/10.1108/ILT-08-2018-0302 . .

TY  - JOUR
AU  - Dobratić, Predrag S.
AU  - Ristivojević, Mileta
AU  - Rosić, Božidar
AU  - Mitrović, Radivoje
AU  - Trifković, Dragan
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3039
AB  - The impact of geometric parameters of teeth and lubricating oils to the efficiency of involute internal spur gears, when the transverse contact ratio is 2  lt  epsilon(alpha)  lt = 3, has been analyzed in this paper. The mathematical model and computer program for determining the current and the effective value of the efficiency have been developed. The influence of the character of load distribution and energy losses due to heating effects during the meshing period is included in the factor of load distribution. The results of computer simulation are given in the form of a diagram of the current values of the efficiency during the meshing period. Also, the values of effective efficiency for the considered cylindrical gear pairs have been calculated.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Mathematical model of energy efficiency in internal spur gears
EP  - S1813
SP  - S1801
VL  - 23
DO  - 10.2298/TSCI180118074D
ER  - 

@article{
author = "Dobratić, Predrag S. and Ristivojević, Mileta and Rosić, Božidar and Mitrović, Radivoje and Trifković, Dragan",
year = "2019",
abstract = "The impact of geometric parameters of teeth and lubricating oils to the efficiency of involute internal spur gears, when the transverse contact ratio is 2  lt  epsilon(alpha)  lt = 3, has been analyzed in this paper. The mathematical model and computer program for determining the current and the effective value of the efficiency have been developed. The influence of the character of load distribution and energy losses due to heating effects during the meshing period is included in the factor of load distribution. The results of computer simulation are given in the form of a diagram of the current values of the efficiency during the meshing period. Also, the values of effective efficiency for the considered cylindrical gear pairs have been calculated.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Mathematical model of energy efficiency in internal spur gears",
pages = "S1813-S1801",
volume = "23",
doi = "10.2298/TSCI180118074D"
}

Dobratić, P. S., Ristivojević, M., Rosić, B., Mitrović, R.,& Trifković, D.. (2019). Mathematical model of energy efficiency in internal spur gears. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 23, S1801-S1813.
https://doi.org/10.2298/TSCI180118074D

Dobratić PS, Ristivojević M, Rosić B, Mitrović R, Trifković D. Mathematical model of energy efficiency in internal spur gears. in Thermal Science. 2019;23:S1801-S1813.
doi:10.2298/TSCI180118074D .

Dobratić, Predrag S., Ristivojević, Mileta, Rosić, Božidar, Mitrović, Radivoje, Trifković, Dragan, "Mathematical model of energy efficiency in internal spur gears" in Thermal Science, 23 (2019):S1801-S1813,
https://doi.org/10.2298/TSCI180118074D . .

TY  - JOUR
AU  - Ristivojević, Mileta
AU  - Mitrović, Radivoje
AU  - Rosić, Božidar
AU  - Dimić, Aleksandar
AU  - Mišković, Žarko
AU  - Stamenić, Zoran
AU  - Sedak, Miloš
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2760
AB  - Application of typization in the process of designing mechanical sub-assemblies and assemblies is one of the ways to reduce the cost of production. Therefore, nowadays, not only roller bearings, bolts, wedges, etc. are produced as standard machine elements but, by the usage of typization, a production of a large series of typified subassemblies and assemblies, such as electric motors, pumps, power transmissions, etc., is increasing. Increased application of typified parts, sub-assemblies and assemblies in mechanical systems requires an increase in their safety and reliability during operation. Accordingly, in this paper, the load capacity of the typified machine parts series from the aspect of their structural strength is analyzed. It has been shown that there is a scattering of calculated results of the safety factor of members of the typified series from the aspect of the structural strength. The paper presents a proposal for a calculation methodology by which the mentioned scattering of the results of load capacity of typified machine parts series can be significantly reduced.
PB  - Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad
T2  - Machine Design
T1  - Typified machine parts series load capacity analysis from aspect of structural strength
EP  - 36
IS  - 2
SP  - 31
VL  - 10
DO  - 10.24867/MD.10.2018.2.31-36
ER  - 

@article{
author = "Ristivojević, Mileta and Mitrović, Radivoje and Rosić, Božidar and Dimić, Aleksandar and Mišković, Žarko and Stamenić, Zoran and Sedak, Miloš",
year = "2018",
abstract = "Application of typization in the process of designing mechanical sub-assemblies and assemblies is one of the ways to reduce the cost of production. Therefore, nowadays, not only roller bearings, bolts, wedges, etc. are produced as standard machine elements but, by the usage of typization, a production of a large series of typified subassemblies and assemblies, such as electric motors, pumps, power transmissions, etc., is increasing. Increased application of typified parts, sub-assemblies and assemblies in mechanical systems requires an increase in their safety and reliability during operation. Accordingly, in this paper, the load capacity of the typified machine parts series from the aspect of their structural strength is analyzed. It has been shown that there is a scattering of calculated results of the safety factor of members of the typified series from the aspect of the structural strength. The paper presents a proposal for a calculation methodology by which the mentioned scattering of the results of load capacity of typified machine parts series can be significantly reduced.",
publisher = "Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad",
journal = "Machine Design",
title = "Typified machine parts series load capacity analysis from aspect of structural strength",
pages = "36-31",
number = "2",
volume = "10",
doi = "10.24867/MD.10.2018.2.31-36"
}

Ristivojević, M., Mitrović, R., Rosić, B., Dimić, A., Mišković, Ž., Stamenić, Z.,& Sedak, M.. (2018). Typified machine parts series load capacity analysis from aspect of structural strength. in Machine Design
Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad., 10(2), 31-36.
https://doi.org/10.24867/MD.10.2018.2.31-36

Ristivojević M, Mitrović R, Rosić B, Dimić A, Mišković Ž, Stamenić Z, Sedak M. Typified machine parts series load capacity analysis from aspect of structural strength. in Machine Design. 2018;10(2):31-36.
doi:10.24867/MD.10.2018.2.31-36 .

Ristivojević, Mileta, Mitrović, Radivoje, Rosić, Božidar, Dimić, Aleksandar, Mišković, Žarko, Stamenić, Zoran, Sedak, Miloš, "Typified machine parts series load capacity analysis from aspect of structural strength" in Machine Design, 10, no. 2 (2018):31-36,
https://doi.org/10.24867/MD.10.2018.2.31-36 . .

TY  - JOUR
AU  - Sedak, Miloš
AU  - Rosić, Božidar
AU  - Ristivojević, Mileta
AU  - Mitrović, Radivoje
AU  - Dimić, Aleksandar
AU  - Mišković, Žarko
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2764
AB  - By kinematic combinations of toothed pairs with external and internal contacts, we can obtain planetary gears with a considerably improved performance than the corresponding ones with fixed axes, as well as planetary gears with notably poor performance regarding the efficiency. In regard to that, the reference literature and papers almost regularly emphasize that planetary gears, under the same technical conditions, have a smaller mass and a higher degree of efficiency than the ones with fixed axes. The main aim of this paper is to examine the above statement and to determine the scope of the gear ratios in which the planetary gears are more suitable than the fixed axes gears.
PB  - Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad
T2  - Machine Design
T1  - Efficiency analysis of planetary gears
EP  - 142
IS  - 4
SP  - 139
VL  - 10
DO  - 10.24867/MD.10.2018.4.139-142
ER  - 

@article{
author = "Sedak, Miloš and Rosić, Božidar and Ristivojević, Mileta and Mitrović, Radivoje and Dimić, Aleksandar and Mišković, Žarko",
year = "2018",
abstract = "By kinematic combinations of toothed pairs with external and internal contacts, we can obtain planetary gears with a considerably improved performance than the corresponding ones with fixed axes, as well as planetary gears with notably poor performance regarding the efficiency. In regard to that, the reference literature and papers almost regularly emphasize that planetary gears, under the same technical conditions, have a smaller mass and a higher degree of efficiency than the ones with fixed axes. The main aim of this paper is to examine the above statement and to determine the scope of the gear ratios in which the planetary gears are more suitable than the fixed axes gears.",
publisher = "Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad",
journal = "Machine Design",
title = "Efficiency analysis of planetary gears",
pages = "142-139",
number = "4",
volume = "10",
doi = "10.24867/MD.10.2018.4.139-142"
}

Sedak, M., Rosić, B., Ristivojević, M., Mitrović, R., Dimić, A.,& Mišković, Ž.. (2018). Efficiency analysis of planetary gears. in Machine Design
Univerzitet u Novom Sadu - Fakultet tehničkih nauka, Novi Sad., 10(4), 139-142.
https://doi.org/10.24867/MD.10.2018.4.139-142

Sedak M, Rosić B, Ristivojević M, Mitrović R, Dimić A, Mišković Ž. Efficiency analysis of planetary gears. in Machine Design. 2018;10(4):139-142.
doi:10.24867/MD.10.2018.4.139-142 .

Sedak, Miloš, Rosić, Božidar, Ristivojević, Mileta, Mitrović, Radivoje, Dimić, Aleksandar, Mišković, Žarko, "Efficiency analysis of planetary gears" in Machine Design, 10, no. 4 (2018):139-142,
https://doi.org/10.24867/MD.10.2018.4.139-142 . .

TY  - JOUR
AU  - Rosić, Božidar
AU  - Ristivojević, Mileta
AU  - Radović, Dobrinko
AU  - Marković, Dragan
AU  - Vasić, Z.
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1479
AB  - The purpose of this paper is to present the method for solving multiobjective nonlinear optimization of planetary gear trains. Optimization of gear train was successfully accomplished using the genetic algorithm (GA). The weighting method is used to approximate the Pareto set. This method transforms the multiobjective optimization problem into single-objective optimization problem by associating each objective function a weighting coefficient and then minimizing the weighted sum of the objectives. The GA based approach produced quite satisfactory results promptly supplying the designer with the preliminary design parameters of planetary gear train for different gear ratios. The results showed that the genetic algorithm is useful and applicable for optimization of planetary gears desgin.
T2  - Technics Technologies Education Management
T1  - Analysis and multiobjective design optimization of planetary gear train
EP  - 984
IS  - 3
SP  - 975
VL  - 7
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1479
ER  - 

@article{
author = "Rosić, Božidar and Ristivojević, Mileta and Radović, Dobrinko and Marković, Dragan and Vasić, Z.",
year = "2012",
abstract = "The purpose of this paper is to present the method for solving multiobjective nonlinear optimization of planetary gear trains. Optimization of gear train was successfully accomplished using the genetic algorithm (GA). The weighting method is used to approximate the Pareto set. This method transforms the multiobjective optimization problem into single-objective optimization problem by associating each objective function a weighting coefficient and then minimizing the weighted sum of the objectives. The GA based approach produced quite satisfactory results promptly supplying the designer with the preliminary design parameters of planetary gear train for different gear ratios. The results showed that the genetic algorithm is useful and applicable for optimization of planetary gears desgin.",
journal = "Technics Technologies Education Management",
title = "Analysis and multiobjective design optimization of planetary gear train",
pages = "984-975",
number = "3",
volume = "7",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1479"
}

Rosić, B., Ristivojević, M., Radović, D., Marković, D.,& Vasić, Z.. (2012). Analysis and multiobjective design optimization of planetary gear train. in Technics Technologies Education Management, 7(3), 975-984.
https://hdl.handle.net/21.15107/rcub_machinery_1479

Rosić B, Ristivojević M, Radović D, Marković D, Vasić Z. Analysis and multiobjective design optimization of planetary gear train. in Technics Technologies Education Management. 2012;7(3):975-984.
https://hdl.handle.net/21.15107/rcub_machinery_1479 .

Rosić, Božidar, Ristivojević, Mileta, Radović, Dobrinko, Marković, Dragan, Vasić, Z., "Analysis and multiobjective design optimization of planetary gear train" in Technics Technologies Education Management, 7, no. 3 (2012):975-984,
https://hdl.handle.net/21.15107/rcub_machinery_1479 .

TY  - JOUR
AU  - Marinković, Aleksandar
AU  - Rosić, Božidar
AU  - Petropoulos, Georgios
PY  - 2007
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/709
AB  - Purpose - This paper aims to develop a simulating model of a journal porous metal bearing under elastohydrodynamic conditions and combined (radial, friction and thermal) load distribution and to carry out structural optimization. Design/methodology/approach - The structure analysis is carried out for each kind of load separately and for the combined load distribution of the bearing, where a dynamically loaded porous metal bearing is simulated. This simulating model is developed by finite elements method using the structure analysis module of the CATIA V5 software. Further, a parameter optimization of a porous metal bearing is presented considering the elastic deformations of the bearing shell. Findings - It is revealed that the bearing, even at points with maximum displacements, could not reach the mounting clearance value during its operational life. Relatively small bearing dimensions produce very high values of eigenfrequency response (over 150 kHz) and common dynamic loads met in all sorts of sliding bearing are not dangerous for bearing damage compared with static loads. In the stage of structural optimization based on the correlation between stress and geometric bearing parameters like wall thickness and outer diameter, the influence of finite element dimension on calculated results can be also analyzed and a proper choice of the latter is achieved. Research limitations/implications - The present porous bearing optimization model with the aid of CATIA V5 module for optimum design uses only single objective optimization. For a complete optimum design a multi-objective optimization has to be carried out. Practical implications - The analysis under dynamic load conditions proved that relatively small dimensions of bearing commonly used in micro technique and precision mechanics result in extended safe and reliable operation. Originality/value - This paper provides a methodology for bearing stress and deformation analysis in the elastic range and on the basis of this analysis it is possible to develop an optimization model for porous bearings offering help to designers for the selection of optimal bearing dimensions considering the bearing load caused by dynamic radial force, friction and temperature variation.
PB  - Emerald Group Publishing Ltd, Bingley
T2  - Engineering Computations
T1  - Analysis and optimization of dynamically loaded porous metal sliding bearings under conditions of elastohydrodynamic lubrication
EP  - 268
IS  - 3-4
SP  - 255
VL  - 24
DO  - 10.1108/02644400710735016
ER  - 

@article{
author = "Marinković, Aleksandar and Rosić, Božidar and Petropoulos, Georgios",
year = "2007",
abstract = "Purpose - This paper aims to develop a simulating model of a journal porous metal bearing under elastohydrodynamic conditions and combined (radial, friction and thermal) load distribution and to carry out structural optimization. Design/methodology/approach - The structure analysis is carried out for each kind of load separately and for the combined load distribution of the bearing, where a dynamically loaded porous metal bearing is simulated. This simulating model is developed by finite elements method using the structure analysis module of the CATIA V5 software. Further, a parameter optimization of a porous metal bearing is presented considering the elastic deformations of the bearing shell. Findings - It is revealed that the bearing, even at points with maximum displacements, could not reach the mounting clearance value during its operational life. Relatively small bearing dimensions produce very high values of eigenfrequency response (over 150 kHz) and common dynamic loads met in all sorts of sliding bearing are not dangerous for bearing damage compared with static loads. In the stage of structural optimization based on the correlation between stress and geometric bearing parameters like wall thickness and outer diameter, the influence of finite element dimension on calculated results can be also analyzed and a proper choice of the latter is achieved. Research limitations/implications - The present porous bearing optimization model with the aid of CATIA V5 module for optimum design uses only single objective optimization. For a complete optimum design a multi-objective optimization has to be carried out. Practical implications - The analysis under dynamic load conditions proved that relatively small dimensions of bearing commonly used in micro technique and precision mechanics result in extended safe and reliable operation. Originality/value - This paper provides a methodology for bearing stress and deformation analysis in the elastic range and on the basis of this analysis it is possible to develop an optimization model for porous bearings offering help to designers for the selection of optimal bearing dimensions considering the bearing load caused by dynamic radial force, friction and temperature variation.",
publisher = "Emerald Group Publishing Ltd, Bingley",
journal = "Engineering Computations",
title = "Analysis and optimization of dynamically loaded porous metal sliding bearings under conditions of elastohydrodynamic lubrication",
pages = "268-255",
number = "3-4",
volume = "24",
doi = "10.1108/02644400710735016"
}

Marinković, A., Rosić, B.,& Petropoulos, G.. (2007). Analysis and optimization of dynamically loaded porous metal sliding bearings under conditions of elastohydrodynamic lubrication. in Engineering Computations
Emerald Group Publishing Ltd, Bingley., 24(3-4), 255-268.
https://doi.org/10.1108/02644400710735016

Marinković A, Rosić B, Petropoulos G. Analysis and optimization of dynamically loaded porous metal sliding bearings under conditions of elastohydrodynamic lubrication. in Engineering Computations. 2007;24(3-4):255-268.
doi:10.1108/02644400710735016 .

Marinković, Aleksandar, Rosić, Božidar, Petropoulos, Georgios, "Analysis and optimization of dynamically loaded porous metal sliding bearings under conditions of elastohydrodynamic lubrication" in Engineering Computations, 24, no. 3-4 (2007):255-268,
https://doi.org/10.1108/02644400710735016 . .