TY  - CONF
AU  - Elek, Predrag
AU  - Đorđević, Miroslav
AU  - Marković, Miloš
AU  - Jevtić, Dejan
AU  - Đurović, Radovan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7075
AB  - Characterization of behind armor debris (BAD) is of utmost importance from the aspect of evaluation of an armor piercing projectile efficiency, as well as from the point of target vulnerability. The focus of the study is on the size, shape, total number, mass and velocity of fragments generated from the target plate. The experimental results of perforation of 6.35 mm thick steel plates by 12.7 mm armor-piercing projectile have been reported. Projectile impact and residual velocity were measured by the muzzle velocity radar system and make-up screens, respectively. The mass and shape distribution of a generated BAD cloud and its energetic properties were determined using the calibrated witness pack. The proposed analytical model of the problem is based on the energy conservation, fracture mechanics and fragmentation theory. A good agreement is observed between calculated results and experimental data in terms of the shape, characteristic size, mass and velocity distribution of generated fragments.
PB  - DESTech Publications, Inc.
C3  - 33rd International Symposium on Ballistics, Bruges, Belgium, 16-20 October 2023
T1  - Experimental and analytical study of behind armor debris after perforation of a steel plate by an AP projectile
SP  - pp. 1726-1737
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7075
ER  - 

@conference{
author = "Elek, Predrag and Đorđević, Miroslav and Marković, Miloš and Jevtić, Dejan and Đurović, Radovan",
year = "2023",
abstract = "Characterization of behind armor debris (BAD) is of utmost importance from the aspect of evaluation of an armor piercing projectile efficiency, as well as from the point of target vulnerability. The focus of the study is on the size, shape, total number, mass and velocity of fragments generated from the target plate. The experimental results of perforation of 6.35 mm thick steel plates by 12.7 mm armor-piercing projectile have been reported. Projectile impact and residual velocity were measured by the muzzle velocity radar system and make-up screens, respectively. The mass and shape distribution of a generated BAD cloud and its energetic properties were determined using the calibrated witness pack. The proposed analytical model of the problem is based on the energy conservation, fracture mechanics and fragmentation theory. A good agreement is observed between calculated results and experimental data in terms of the shape, characteristic size, mass and velocity distribution of generated fragments.",
publisher = "DESTech Publications, Inc.",
journal = "33rd International Symposium on Ballistics, Bruges, Belgium, 16-20 October 2023",
title = "Experimental and analytical study of behind armor debris after perforation of a steel plate by an AP projectile",
pages = "pp. 1726-1737",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7075"
}

Elek, P., Đorđević, M., Marković, M., Jevtić, D.,& Đurović, R.. (2023). Experimental and analytical study of behind armor debris after perforation of a steel plate by an AP projectile. in 33rd International Symposium on Ballistics, Bruges, Belgium, 16-20 October 2023
DESTech Publications, Inc.., pp. 1726-1737.
https://hdl.handle.net/21.15107/rcub_machinery_7075

Elek P, Đorđević M, Marković M, Jevtić D, Đurović R. Experimental and analytical study of behind armor debris after perforation of a steel plate by an AP projectile. in 33rd International Symposium on Ballistics, Bruges, Belgium, 16-20 October 2023. 2023;:pp. 1726-1737.
https://hdl.handle.net/21.15107/rcub_machinery_7075 .

Elek, Predrag, Đorđević, Miroslav, Marković, Miloš, Jevtić, Dejan, Đurović, Radovan, "Experimental and analytical study of behind armor debris after perforation of a steel plate by an AP projectile" in 33rd International Symposium on Ballistics, Bruges, Belgium, 16-20 October 2023 (2023):pp. 1726-1737,
https://hdl.handle.net/21.15107/rcub_machinery_7075 .

TY  - CONF
AU  - Elek, Predrag
AU  - Marković, Miloš
AU  - Jevtić, Dejan
AU  - Đurović, Radovan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6910
AB  - The shaped charge effect is currently the most powerful target penetration mechanism. It relies on conversion of explosive charge detonation energy into kinetic energy of a hypervelocity metal penetrator, known as a jet. The first stage of the shaped charge mechanism is formation of the jet through processes of detonation wave propagation and interaction with a metal liner which accelerates and collapses towards the symmetry axis creating the slug and the jet. Our focus in the present research is on the second stage of the process: the jet interaction with the target material and consequent target penetration/perforation. 
There are many approaches to the modeling of shaped charge jet penetration depth into target material. Two major analytical models are: the simple density law and the model with variable jet velocity. However, the most accurate is the approach based on numerical simulations using so called hydrocodes. Modeling and simulation in Abaqus/Explicit software is presented in detail. The complete process of jet formation and penetration is simulated using the Eulerian approach.
Comprehensive comparison between results obtained using various theoretical models (analytical and numerical) and experimental data has been performed providing useful insights and conclusions.
PB  - Belgrade : Serbian Society of Mechanics
C3  - 9th Congress of the Serbian Society of Mechanics, July 5-7, 2023, Vrnjačka Banja, Serbia
T1  - Modeling of penetration depth of a shaped charge jet
EP  - 1
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6910
ER  - 

@conference{
author = "Elek, Predrag and Marković, Miloš and Jevtić, Dejan and Đurović, Radovan",
year = "2023",
abstract = "The shaped charge effect is currently the most powerful target penetration mechanism. It relies on conversion of explosive charge detonation energy into kinetic energy of a hypervelocity metal penetrator, known as a jet. The first stage of the shaped charge mechanism is formation of the jet through processes of detonation wave propagation and interaction with a metal liner which accelerates and collapses towards the symmetry axis creating the slug and the jet. Our focus in the present research is on the second stage of the process: the jet interaction with the target material and consequent target penetration/perforation. 
There are many approaches to the modeling of shaped charge jet penetration depth into target material. Two major analytical models are: the simple density law and the model with variable jet velocity. However, the most accurate is the approach based on numerical simulations using so called hydrocodes. Modeling and simulation in Abaqus/Explicit software is presented in detail. The complete process of jet formation and penetration is simulated using the Eulerian approach.
Comprehensive comparison between results obtained using various theoretical models (analytical and numerical) and experimental data has been performed providing useful insights and conclusions.",
publisher = "Belgrade : Serbian Society of Mechanics",
journal = "9th Congress of the Serbian Society of Mechanics, July 5-7, 2023, Vrnjačka Banja, Serbia",
title = "Modeling of penetration depth of a shaped charge jet",
pages = "1-1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6910"
}

Elek, P., Marković, M., Jevtić, D.,& Đurović, R.. (2023). Modeling of penetration depth of a shaped charge jet. in 9th Congress of the Serbian Society of Mechanics, July 5-7, 2023, Vrnjačka Banja, Serbia
Belgrade : Serbian Society of Mechanics., 1-1.
https://hdl.handle.net/21.15107/rcub_machinery_6910

Elek P, Marković M, Jevtić D, Đurović R. Modeling of penetration depth of a shaped charge jet. in 9th Congress of the Serbian Society of Mechanics, July 5-7, 2023, Vrnjačka Banja, Serbia. 2023;:1-1.
https://hdl.handle.net/21.15107/rcub_machinery_6910 .

Elek, Predrag, Marković, Miloš, Jevtić, Dejan, Đurović, Radovan, "Modeling of penetration depth of a shaped charge jet" in 9th Congress of the Serbian Society of Mechanics, July 5-7, 2023, Vrnjačka Banja, Serbia (2023):1-1,
https://hdl.handle.net/21.15107/rcub_machinery_6910 .

TY  - CONF
AU  - Al Ameri, Omar
AU  - Elek, Predrag
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4871
AB  - The efficiency of the weapon system has been usually studied by altering the guidance and control or aerodynamics of the missile. This research investigated methods of enhancing the efficiency of the weapon system against soft targets based on the fragmentation warhead design. Different warhead geometric configurations, initiation points, as well as premade fragment material and shapes have been studied to enhance overall weapon efficiency against soft target. The study considered the static fragment distribution and velocity as the base for the analysis. A new vulnerability code has been developed based on the mean area of effectiveness to prove the study using both simulations and field tests. There were significant improvements on the weapon efficiency by altering the warhead parameters. The simulated results showed good correspondence with the test results. The newly developed vulnerability code can be
considered as an additional system engineering analysis tool for the calculations of weapon efficiency.
PB  - Belgrade : Military Technical Institute
C3  - 10th Scientific Conference on Defensive Technologies OTEH 2022
T1  - Efficiency analysis of a fragmentation warhead against soft targets
EP  - 79
SP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4871
ER  - 

@conference{
author = "Al Ameri, Omar and Elek, Predrag",
year = "2022",
abstract = "The efficiency of the weapon system has been usually studied by altering the guidance and control or aerodynamics of the missile. This research investigated methods of enhancing the efficiency of the weapon system against soft targets based on the fragmentation warhead design. Different warhead geometric configurations, initiation points, as well as premade fragment material and shapes have been studied to enhance overall weapon efficiency against soft target. The study considered the static fragment distribution and velocity as the base for the analysis. A new vulnerability code has been developed based on the mean area of effectiveness to prove the study using both simulations and field tests. There were significant improvements on the weapon efficiency by altering the warhead parameters. The simulated results showed good correspondence with the test results. The newly developed vulnerability code can be
considered as an additional system engineering analysis tool for the calculations of weapon efficiency.",
publisher = "Belgrade : Military Technical Institute",
journal = "10th Scientific Conference on Defensive Technologies OTEH 2022",
title = "Efficiency analysis of a fragmentation warhead against soft targets",
pages = "79-72",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4871"
}

Al Ameri, O.,& Elek, P.. (2022). Efficiency analysis of a fragmentation warhead against soft targets. in 10th Scientific Conference on Defensive Technologies OTEH 2022
Belgrade : Military Technical Institute., 72-79.
https://hdl.handle.net/21.15107/rcub_machinery_4871

Al Ameri O, Elek P. Efficiency analysis of a fragmentation warhead against soft targets. in 10th Scientific Conference on Defensive Technologies OTEH 2022. 2022;:72-79.
https://hdl.handle.net/21.15107/rcub_machinery_4871 .

Al Ameri, Omar, Elek, Predrag, "Efficiency analysis of a fragmentation warhead against soft targets" in 10th Scientific Conference on Defensive Technologies OTEH 2022 (2022):72-79,
https://hdl.handle.net/21.15107/rcub_machinery_4871 .

TY  - CONF
AU  - Marković, Miloš
AU  - Elek, Predrag
AU  - Jevtić, Dejan
AU  - Đurović, Radovan
AU  - Todić, Ivana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6050
AB  - Purpose of the precursor shaped charge warhead is to initiate the Explosive Reactive Armor (ERA) and thus
provide an unobstructed path to the jet of the main shaped charge. The precursor warhead is most commonly placed in
the front of the missile where it is surrounded by other subsystems. All of the subsystems which lay on the path of the
precursor warhead’s shaped charge jet represent the obstacle that will decrease its efficiency. The goal of this paper is
to analyze the precursor warhead’s performance in a case where the inhomogeneous obstacle is placed in front of it.
The numerical analysis of the obstructed formation process was performed in order to determine the properties of the
formed jet using ANSYS AUTODYN 2D software. For the existing missile configuration, jet formation process and
precursor warhead's performance against ERA were analyzed numerically. Significant differences in formed jet's
properties were observed for the simulations with and without the inhomogeneous obstacles. In the case of
inhomogeneous obstacle it is present decreasing of jet tip velocity for around 23%, decreasing of jet tip dimaeter for
around 50% and jet time are delayed in contact with ERA front panel for around 10 µs. Obtained results indicate that
in the observed cases, formed jet has enough energy to initiate the explosive reactive armor.
PB  - Belgrade : Military Technical Institute
C3  - 10th International Scientific Conference – OTEH 2022, Belgrade, 13-14 October 2022
T1  - Numerical analysis of the inhomogeneous obstacle influence on the precursor shaped charge warhead performance
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6050
ER  - 

@conference{
author = "Marković, Miloš and Elek, Predrag and Jevtić, Dejan and Đurović, Radovan and Todić, Ivana",
year = "2022",
abstract = "Purpose of the precursor shaped charge warhead is to initiate the Explosive Reactive Armor (ERA) and thus
provide an unobstructed path to the jet of the main shaped charge. The precursor warhead is most commonly placed in
the front of the missile where it is surrounded by other subsystems. All of the subsystems which lay on the path of the
precursor warhead’s shaped charge jet represent the obstacle that will decrease its efficiency. The goal of this paper is
to analyze the precursor warhead’s performance in a case where the inhomogeneous obstacle is placed in front of it.
The numerical analysis of the obstructed formation process was performed in order to determine the properties of the
formed jet using ANSYS AUTODYN 2D software. For the existing missile configuration, jet formation process and
precursor warhead's performance against ERA were analyzed numerically. Significant differences in formed jet's
properties were observed for the simulations with and without the inhomogeneous obstacles. In the case of
inhomogeneous obstacle it is present decreasing of jet tip velocity for around 23%, decreasing of jet tip dimaeter for
around 50% and jet time are delayed in contact with ERA front panel for around 10 µs. Obtained results indicate that
in the observed cases, formed jet has enough energy to initiate the explosive reactive armor.",
publisher = "Belgrade : Military Technical Institute",
journal = "10th International Scientific Conference – OTEH 2022, Belgrade, 13-14 October 2022",
title = "Numerical analysis of the inhomogeneous obstacle influence on the precursor shaped charge warhead performance",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6050"
}

Marković, M., Elek, P., Jevtić, D., Đurović, R.,& Todić, I.. (2022). Numerical analysis of the inhomogeneous obstacle influence on the precursor shaped charge warhead performance. in 10th International Scientific Conference – OTEH 2022, Belgrade, 13-14 October 2022
Belgrade : Military Technical Institute..
https://hdl.handle.net/21.15107/rcub_machinery_6050

Marković M, Elek P, Jevtić D, Đurović R, Todić I. Numerical analysis of the inhomogeneous obstacle influence on the precursor shaped charge warhead performance. in 10th International Scientific Conference – OTEH 2022, Belgrade, 13-14 October 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_6050 .

Marković, Miloš, Elek, Predrag, Jevtić, Dejan, Đurović, Radovan, Todić, Ivana, "Numerical analysis of the inhomogeneous obstacle influence on the precursor shaped charge warhead performance" in 10th International Scientific Conference – OTEH 2022, Belgrade, 13-14 October 2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_6050 .

TY  - JOUR
AU  - Tomić, Stefan
AU  - Elek, Predrag
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4571
AB  - The importance of investigation of main explosive charge initiation using booster charge stems directly from the objective to optimize the mass of booster charge needed to ensure steady state detonation of main explosive charge in order to achieve maximum projectile efficiency. Considered configuration consists of two explosives and three metal parts which represent
elements of fuze and projectile. The main objective of this paper is to develop a numerical model of initiation of main explosive charge of an insensitive artillery ammunition. Through this research two variants of detonation point location were analyzed, ideal and stochastic one. The effects of the detonation transfer are analyzed using the Jones-Wilkins-Lee and Ignition and Growth equation of state models for explosives, applying the Coupled Eulerian-Lagrangian approach in the Abaqus/Explicit software. Analytical computation is introduced in this paper with a purpose to present P-u interaction between configuration elements and for comparison with results obtained by numerical method. The results of analytical and numerical approach are presented and discussed in detail. It is shown that suggested numerical model enables simulation and optimization of explosive train in fuzes of HE projectiles.
PB  - Belgrade : Military Technical Institute
T2  - Scientific Technical Review
T1  - Numerical Analysis of Initiation of Main Explosive Charge in an Artillery Projectile
EP  - 54
IS  - 1
SP  - 48
VL  - 72
DO  - 10.5937/str2201048T
ER  - 

@article{
author = "Tomić, Stefan and Elek, Predrag",
year = "2022",
abstract = "The importance of investigation of main explosive charge initiation using booster charge stems directly from the objective to optimize the mass of booster charge needed to ensure steady state detonation of main explosive charge in order to achieve maximum projectile efficiency. Considered configuration consists of two explosives and three metal parts which represent
elements of fuze and projectile. The main objective of this paper is to develop a numerical model of initiation of main explosive charge of an insensitive artillery ammunition. Through this research two variants of detonation point location were analyzed, ideal and stochastic one. The effects of the detonation transfer are analyzed using the Jones-Wilkins-Lee and Ignition and Growth equation of state models for explosives, applying the Coupled Eulerian-Lagrangian approach in the Abaqus/Explicit software. Analytical computation is introduced in this paper with a purpose to present P-u interaction between configuration elements and for comparison with results obtained by numerical method. The results of analytical and numerical approach are presented and discussed in detail. It is shown that suggested numerical model enables simulation and optimization of explosive train in fuzes of HE projectiles.",
publisher = "Belgrade : Military Technical Institute",
journal = "Scientific Technical Review",
title = "Numerical Analysis of Initiation of Main Explosive Charge in an Artillery Projectile",
pages = "54-48",
number = "1",
volume = "72",
doi = "10.5937/str2201048T"
}

Tomić, S.,& Elek, P.. (2022). Numerical Analysis of Initiation of Main Explosive Charge in an Artillery Projectile. in Scientific Technical Review
Belgrade : Military Technical Institute., 72(1), 48-54.
https://doi.org/10.5937/str2201048T

Tomić S, Elek P. Numerical Analysis of Initiation of Main Explosive Charge in an Artillery Projectile. in Scientific Technical Review. 2022;72(1):48-54.
doi:10.5937/str2201048T .

Tomić, Stefan, Elek, Predrag, "Numerical Analysis of Initiation of Main Explosive Charge in an Artillery Projectile" in Scientific Technical Review, 72, no. 1 (2022):48-54,
https://doi.org/10.5937/str2201048T . .

TY  - JOUR
AU  - Al Ameri, Omar
AU  - Elek, Predrag
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4567
AB  - The efficiency of the weapon system has been usually studied by altering the guidance and control or aerodynamics of the missile. This research investigated methods of enhancing the efficiency of the weapon system against soft targets based on the fragmentation warhead design. Different warhead geometric configurations, initiation points, as well as premade fragment
material and shapes have been studied to enhance overall weapon efficiency against soft target. The study considered the static fragment distribution and velocity as the base for the analysis. A new vulnerability code has been developed based on the mean area of effectiveness to prove the study using both simulations and field tests. There were significant improvements
on the weapon efficiency by altering the warhead parameters. The simulated results showed good correspondence with the test results. The newly developed vulnerability code can be considered as an additional system engineering analysis tool for the calculations of weapon efficiency
PB  - Belgrade : Military Technical Institute
T2  - Scientific Technical Review
T1  - Efficiency Analysis of a Fragmentation Warhead Against Soft Targets
EP  - 26
IS  - 2
SP  - 19
VL  - 72
DO  - doi: 10.5937/str2202019A
ER  - 

@article{
author = "Al Ameri, Omar and Elek, Predrag",
year = "2022",
abstract = "The efficiency of the weapon system has been usually studied by altering the guidance and control or aerodynamics of the missile. This research investigated methods of enhancing the efficiency of the weapon system against soft targets based on the fragmentation warhead design. Different warhead geometric configurations, initiation points, as well as premade fragment
material and shapes have been studied to enhance overall weapon efficiency against soft target. The study considered the static fragment distribution and velocity as the base for the analysis. A new vulnerability code has been developed based on the mean area of effectiveness to prove the study using both simulations and field tests. There were significant improvements
on the weapon efficiency by altering the warhead parameters. The simulated results showed good correspondence with the test results. The newly developed vulnerability code can be considered as an additional system engineering analysis tool for the calculations of weapon efficiency",
publisher = "Belgrade : Military Technical Institute",
journal = "Scientific Technical Review",
title = "Efficiency Analysis of a Fragmentation Warhead Against Soft Targets",
pages = "26-19",
number = "2",
volume = "72",
doi = "doi: 10.5937/str2202019A"
}

Al Ameri, O.,& Elek, P.. (2022). Efficiency Analysis of a Fragmentation Warhead Against Soft Targets. in Scientific Technical Review
Belgrade : Military Technical Institute., 72(2), 19-26.
https://doi.org/doi: 10.5937/str2202019A

Al Ameri O, Elek P. Efficiency Analysis of a Fragmentation Warhead Against Soft Targets. in Scientific Technical Review. 2022;72(2):19-26.
doi:doi: 10.5937/str2202019A .

Al Ameri, Omar, Elek, Predrag, "Efficiency Analysis of a Fragmentation Warhead Against Soft Targets" in Scientific Technical Review, 72, no. 2 (2022):19-26,
https://doi.org/doi: 10.5937/str2202019A . .

TY  - CONF
AU  - Glavšić, Milica
AU  - Elek, Predrag
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4583
AB  - The main objective of the present research is development of a preliminary numerical model
of dynamics and possible damage of a vehicle under the action of blast wave generated by the
activation of a landmine. Such a model should provide a valuable insight into complex
phenomena accompanied by detonation of a mine – pressure distribution in time, vehicle motion,
damage, etc. Numerical simulation has been performed using Abaqus/Explicit, FEM-based
software suitable for nonlinear processes with high strains, strain rates and energy densities,
which is typical for explosion effects. A representative case study of an explosion of 8 kg
explosive substance Composition B was analyzed. The explosion takes place under a vehicle with
the mass of 8 tons, with specific V-shaped body consisted from 10 mm thick armor steel plates.
The numerical model based on usage of Abaqus build-in CONWEP blast relations is described.
The results obtained show the displacement, and stress-stain field in the loaded vehicle, on the
basis of which the degree of damage to the target structure can be predicted. The guidelines for
the further work and model improvement are suggested.
PB  - Serbian Society of Mechanics
C3  - Proceedings of 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, June 24-26, 2019
T1  - Numerical analysis of mine blast action on a vehicle
SP  - I1b
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4583
ER  - 

@conference{
author = "Glavšić, Milica and Elek, Predrag",
year = "2019",
abstract = "The main objective of the present research is development of a preliminary numerical model
of dynamics and possible damage of a vehicle under the action of blast wave generated by the
activation of a landmine. Such a model should provide a valuable insight into complex
phenomena accompanied by detonation of a mine – pressure distribution in time, vehicle motion,
damage, etc. Numerical simulation has been performed using Abaqus/Explicit, FEM-based
software suitable for nonlinear processes with high strains, strain rates and energy densities,
which is typical for explosion effects. A representative case study of an explosion of 8 kg
explosive substance Composition B was analyzed. The explosion takes place under a vehicle with
the mass of 8 tons, with specific V-shaped body consisted from 10 mm thick armor steel plates.
The numerical model based on usage of Abaqus build-in CONWEP blast relations is described.
The results obtained show the displacement, and stress-stain field in the loaded vehicle, on the
basis of which the degree of damage to the target structure can be predicted. The guidelines for
the further work and model improvement are suggested.",
publisher = "Serbian Society of Mechanics",
journal = "Proceedings of 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, June 24-26, 2019",
title = "Numerical analysis of mine blast action on a vehicle",
pages = "I1b",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4583"
}

Glavšić, M.,& Elek, P.. (2019). Numerical analysis of mine blast action on a vehicle. in Proceedings of 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, June 24-26, 2019
Serbian Society of Mechanics., I1b.
https://hdl.handle.net/21.15107/rcub_machinery_4583

Glavšić M, Elek P. Numerical analysis of mine blast action on a vehicle. in Proceedings of 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, June 24-26, 2019. 2019;:I1b.
https://hdl.handle.net/21.15107/rcub_machinery_4583 .

Glavšić, Milica, Elek, Predrag, "Numerical analysis of mine blast action on a vehicle" in Proceedings of 7th International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, June 24-26, 2019 (2019):I1b,
https://hdl.handle.net/21.15107/rcub_machinery_4583 .

TY  - CONF
AU  - Alazeezi, Mohammed
AU  - Elek, Predrag
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4911
AB  - Optimizing the nozzle of a solid propellant rocket motor plays an essential rule in the overall performance of the motor. In this paper, the investigation of an optimization model of dual thrust propellant rocket motors will be presented. Due to having two phases of thrust in this type of rocket motors, determination of the rocket nozzle expansion ratio is a non-trivial problem. The idea is to use a simple, fixed length and expansion ratio, convergent-divergent nozzle, which provides the highest total impulse of the motor. Usual assumptions for an ideal rocket motor have been used. The optimization model was developed in MATLAB and calculations has been performed using previously obtained interior ballistic and other relevant data for a dual thrust solid propellant rocket motor.
PB  - SOCIETY FOR ROBOTICS OF BOSNIA AND HERZEGOVINA
C3  - Proceedings of 5th International Conference "New Technologies, Development, and Application NT-2019", Sarajevo, Bosnia and Hercegovina
T1  - Nozzle optimization of dual thrust rocket motor
SP  - 31
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4911
ER  - 

@conference{
author = "Alazeezi, Mohammed and Elek, Predrag",
year = "2019",
abstract = "Optimizing the nozzle of a solid propellant rocket motor plays an essential rule in the overall performance of the motor. In this paper, the investigation of an optimization model of dual thrust propellant rocket motors will be presented. Due to having two phases of thrust in this type of rocket motors, determination of the rocket nozzle expansion ratio is a non-trivial problem. The idea is to use a simple, fixed length and expansion ratio, convergent-divergent nozzle, which provides the highest total impulse of the motor. Usual assumptions for an ideal rocket motor have been used. The optimization model was developed in MATLAB and calculations has been performed using previously obtained interior ballistic and other relevant data for a dual thrust solid propellant rocket motor.",
publisher = "SOCIETY FOR ROBOTICS OF BOSNIA AND HERZEGOVINA",
journal = "Proceedings of 5th International Conference "New Technologies, Development, and Application NT-2019", Sarajevo, Bosnia and Hercegovina",
title = "Nozzle optimization of dual thrust rocket motor",
pages = "31",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4911"
}

Alazeezi, M.,& Elek, P.. (2019). Nozzle optimization of dual thrust rocket motor. in Proceedings of 5th International Conference "New Technologies, Development, and Application NT-2019", Sarajevo, Bosnia and Hercegovina
SOCIETY FOR ROBOTICS OF BOSNIA AND HERZEGOVINA., 31.
https://hdl.handle.net/21.15107/rcub_machinery_4911

Alazeezi M, Elek P. Nozzle optimization of dual thrust rocket motor. in Proceedings of 5th International Conference "New Technologies, Development, and Application NT-2019", Sarajevo, Bosnia and Hercegovina. 2019;:31.
https://hdl.handle.net/21.15107/rcub_machinery_4911 .

Alazeezi, Mohammed, Elek, Predrag, "Nozzle optimization of dual thrust rocket motor" in Proceedings of 5th International Conference "New Technologies, Development, and Application NT-2019", Sarajevo, Bosnia and Hercegovina (2019):31,
https://hdl.handle.net/21.15107/rcub_machinery_4911 .

TY  - THES
AU  - Marković, Miloš
PY  - 2018
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=6238
UR  - https://nardus.mpn.gov.rs/handle/123456789/10206
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:18844/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=514974115
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/57
AB  - U radu je predstavljen integralni pristup istraživanju parametara projektovanja raketa sa aspekta usaglašavanja ograničenja proisteklih iz zadataka mehanike pri posebnim uslovima gađanja balističkih ciljeva koji nameću različite konstruktivne kompromise...
AB  - An integral approach has been presented on the research of missile design parameters from the aspect of harmonizing the limitations arising from the tasks of mechanics under the special conditions of hiting ballistic targets that impose various constructive compromises. Shooting target was analyzed for the most complex procedure of defense against ballistic targets. Basis on previous, it was establish criteria for require missile impact parameters and its ideal limit capabilities. The required normal acceleration, miss distance and control effort for each of the threshold missions are estimated. Based on the established criteria, a further aerodynamic design procedure is given, which is manifested through the selection of body geometric and aerodynamic performances, as well as appropriate control concepts for the requirements of the required maximum normal acceleration in the conditions of threshold flight missions. The synthesis of the autopilot of the vertical launch of the missile was performed, as well as the determination performances of the selected type of thrust vector control system and aerodynmaics for the purpose of hybrid control analysis. In particular, the propulsion performance assessment was carried out to integrate total flight and impact assessment of axial acceleration during the initial phase after vertical launch. The results of the influence parameters on the dynamic characteristics of the vertical launch of the missile in the active phase for hybrid control are presented. A mathematical model of possible use of a warhead for direct hit by an explosive-formed projectile was performed. Design approach and application of explosively-formed projectiles is presented as a potential useful warhead based on the adopted analytical and numerical methods.
PB  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Sinteza taktičkih raketa zemlja-vazduh protiv ciljeva velikih brzina
T1  - Synthesis of tactical surface to air missile against high speed targets
UR  - https://hdl.handle.net/21.15107/rcub_nardus_10206
ER  - 

@phdthesis{
author = "Marković, Miloš",
year = "2018",
abstract = "U radu je predstavljen integralni pristup istraživanju parametara projektovanja raketa sa aspekta usaglašavanja ograničenja proisteklih iz zadataka mehanike pri posebnim uslovima gađanja balističkih ciljeva koji nameću različite konstruktivne kompromise..., An integral approach has been presented on the research of missile design parameters from the aspect of harmonizing the limitations arising from the tasks of mechanics under the special conditions of hiting ballistic targets that impose various constructive compromises. Shooting target was analyzed for the most complex procedure of defense against ballistic targets. Basis on previous, it was establish criteria for require missile impact parameters and its ideal limit capabilities. The required normal acceleration, miss distance and control effort for each of the threshold missions are estimated. Based on the established criteria, a further aerodynamic design procedure is given, which is manifested through the selection of body geometric and aerodynamic performances, as well as appropriate control concepts for the requirements of the required maximum normal acceleration in the conditions of threshold flight missions. The synthesis of the autopilot of the vertical launch of the missile was performed, as well as the determination performances of the selected type of thrust vector control system and aerodynmaics for the purpose of hybrid control analysis. In particular, the propulsion performance assessment was carried out to integrate total flight and impact assessment of axial acceleration during the initial phase after vertical launch. The results of the influence parameters on the dynamic characteristics of the vertical launch of the missile in the active phase for hybrid control are presented. A mathematical model of possible use of a warhead for direct hit by an explosive-formed projectile was performed. Design approach and application of explosively-formed projectiles is presented as a potential useful warhead based on the adopted analytical and numerical methods.",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Sinteza taktičkih raketa zemlja-vazduh protiv ciljeva velikih brzina, Synthesis of tactical surface to air missile against high speed targets",
url = "https://hdl.handle.net/21.15107/rcub_nardus_10206"
}

Marković, M.. (2018). Sinteza taktičkih raketa zemlja-vazduh protiv ciljeva velikih brzina. 
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_10206

Marković M. Sinteza taktičkih raketa zemlja-vazduh protiv ciljeva velikih brzina. 2018;.
https://hdl.handle.net/21.15107/rcub_nardus_10206 .

Marković, Miloš, "Sinteza taktičkih raketa zemlja-vazduh protiv ciljeva velikih brzina" (2018),
https://hdl.handle.net/21.15107/rcub_nardus_10206 .

TY  - JOUR
AU  - Jeremić, Olivera
AU  - Milinović, Momčilo
AU  - Marković, Miloš
AU  - Rašuo, Boško
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2506
AB  - Ovaj rad predstavlja analitički i numerički pristup procenu performansi brzine za Eksplozivno Formirane Projektile (EFP). Predložene analitičke metode matematički razvijaju parametre brzina pojedinačnih segmenata za EFP disk pogonjen eksplozivnim procesom. Ovaj model baziran je na dobro poznatim teorijskim pristupima distribucije energije na plastičnim telima u dinamičkim uslovima formiranjem integralnih rešenja za konačnu brzinu projektila. Paralelno sa analitičkim takođe je razvijen i numerički metod u cilju obezbeđenja procene ponašanje projktila u toku vrmena procesa formiranja EFP-a pogonjenog eksplozivom. Oba modela su validna za procenu performansi EFP bojevih glava i projektnih podatka za optimalno projektivanje oblika EFP-a. Simulacije su podržane softverima Matlob i Autodin kako za ananlitičko tako i numeričko modeliranje. Dobijeni numerički i analitički rezultati upoređeni su sa raspoloživivim eksperimentalnim rezultatima. PR Projekat Ministarstva nauke Republike Srbije, br. III-47029.
AB  - The current paper presents analytical and numerical approaches of velocity performances estimations for the EFP (Explosively Formed Projectiles). The proposed analytical methods mathematically develop velocities parameters of a particular segment for EFP liner propelled by explosive process. This model is based on the well-known theoretical approaches of energy distribution on plastic body in dynamical conditions providing integral solution for projectile final velocity. The redundant to analytical, the numerical method is also developed, to provides estimations about behavior of projectile vs. time in the EFP forming process powered by explosion. Both models are valid for performances estimations of EFP warheads and design data for optimal EFP configuration. Simulations are supported by the software Matlab and Autodyn for analytical and numerical modeling respectively. The obtained numerical and analytical results are compared with the available experimental data.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Analitička i numerička metoda polja brzine za eksplozivno formirane projektile
T1  - Analytical and numerical method of velocity fields for the explosively formed projectiles
EP  - 44
IS  - 1
SP  - 38
VL  - 45
DO  - 10.5937/fmet1701038J
ER  - 

@article{
author = "Jeremić, Olivera and Milinović, Momčilo and Marković, Miloš and Rašuo, Boško",
year = "2017",
abstract = "Ovaj rad predstavlja analitički i numerički pristup procenu performansi brzine za Eksplozivno Formirane Projektile (EFP). Predložene analitičke metode matematički razvijaju parametre brzina pojedinačnih segmenata za EFP disk pogonjen eksplozivnim procesom. Ovaj model baziran je na dobro poznatim teorijskim pristupima distribucije energije na plastičnim telima u dinamičkim uslovima formiranjem integralnih rešenja za konačnu brzinu projektila. Paralelno sa analitičkim takođe je razvijen i numerički metod u cilju obezbeđenja procene ponašanje projktila u toku vrmena procesa formiranja EFP-a pogonjenog eksplozivom. Oba modela su validna za procenu performansi EFP bojevih glava i projektnih podatka za optimalno projektivanje oblika EFP-a. Simulacije su podržane softverima Matlob i Autodin kako za ananlitičko tako i numeričko modeliranje. Dobijeni numerički i analitički rezultati upoređeni su sa raspoloživivim eksperimentalnim rezultatima. PR Projekat Ministarstva nauke Republike Srbije, br. III-47029., The current paper presents analytical and numerical approaches of velocity performances estimations for the EFP (Explosively Formed Projectiles). The proposed analytical methods mathematically develop velocities parameters of a particular segment for EFP liner propelled by explosive process. This model is based on the well-known theoretical approaches of energy distribution on plastic body in dynamical conditions providing integral solution for projectile final velocity. The redundant to analytical, the numerical method is also developed, to provides estimations about behavior of projectile vs. time in the EFP forming process powered by explosion. Both models are valid for performances estimations of EFP warheads and design data for optimal EFP configuration. Simulations are supported by the software Matlab and Autodyn for analytical and numerical modeling respectively. The obtained numerical and analytical results are compared with the available experimental data.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Analitička i numerička metoda polja brzine za eksplozivno formirane projektile, Analytical and numerical method of velocity fields for the explosively formed projectiles",
pages = "44-38",
number = "1",
volume = "45",
doi = "10.5937/fmet1701038J"
}

Jeremić, O., Milinović, M., Marković, M.,& Rašuo, B.. (2017). Analitička i numerička metoda polja brzine za eksplozivno formirane projektile. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 45(1), 38-44.
https://doi.org/10.5937/fmet1701038J

Jeremić O, Milinović M, Marković M, Rašuo B. Analitička i numerička metoda polja brzine za eksplozivno formirane projektile. in FME Transactions. 2017;45(1):38-44.
doi:10.5937/fmet1701038J .

Jeremić, Olivera, Milinović, Momčilo, Marković, Miloš, Rašuo, Boško, "Analitička i numerička metoda polja brzine za eksplozivno formirane projektile" in FME Transactions, 45, no. 1 (2017):38-44,
https://doi.org/10.5937/fmet1701038J . .

TY  - JOUR
AU  - Boulahlib, Mohammed Amine
AU  - Milinović, Momčilo
AU  - Bendjaballah, Mourad
AU  - Jeremić, Olivera
AU  - Sakan, Nenad
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2550
AB  - The paper aims to research the orientation possibilities of an object in the horizontal plane, from its start course into a required orientating recourse, by using simplified navigation methods. The object's directed motion uses controlling powering impulses, variable distributed in time, during constrained motion time. Three logical decision-making methods are designed for calculating the best maneuvering trajectory with minimal error on the target. Computing the powering impulses, their execution instances, as well as their types, are ensured by the methods and presented in the paper. The developed controlling methods are: a modified multiple shooting method, a new control law, called in this paper, current error orientation, as well as a fuzzy logic method. These methods are designed as decision-making software implemented in an electronic hardware as a predefined programmable controller. This provides pre-programmable orientation of the object at the very beginning of course motion, towards a targeted point settled out of initial direction. The controlling methods use optimal diversification of full elapsed determining time to execute, in sequences, appropriate types and number of powering impulses. Simulation tests of the methods, as well as the designed hardware, are also presented in this paper as a contribution to the development researches of horizontal motion control.
PB  - Univ Osijek, Tech Fac, Slavonski Brod
T2  - Tehnički vjesnik
T1  - Software/hardware design of decision-making controllers for object navigation in horizontal plane
EP  - 1784
IS  - 6
SP  - 1777
VL  - 24
DO  - 10.17559/TV-20160408195923
ER  - 

@article{
author = "Boulahlib, Mohammed Amine and Milinović, Momčilo and Bendjaballah, Mourad and Jeremić, Olivera and Sakan, Nenad",
year = "2017",
abstract = "The paper aims to research the orientation possibilities of an object in the horizontal plane, from its start course into a required orientating recourse, by using simplified navigation methods. The object's directed motion uses controlling powering impulses, variable distributed in time, during constrained motion time. Three logical decision-making methods are designed for calculating the best maneuvering trajectory with minimal error on the target. Computing the powering impulses, their execution instances, as well as their types, are ensured by the methods and presented in the paper. The developed controlling methods are: a modified multiple shooting method, a new control law, called in this paper, current error orientation, as well as a fuzzy logic method. These methods are designed as decision-making software implemented in an electronic hardware as a predefined programmable controller. This provides pre-programmable orientation of the object at the very beginning of course motion, towards a targeted point settled out of initial direction. The controlling methods use optimal diversification of full elapsed determining time to execute, in sequences, appropriate types and number of powering impulses. Simulation tests of the methods, as well as the designed hardware, are also presented in this paper as a contribution to the development researches of horizontal motion control.",
publisher = "Univ Osijek, Tech Fac, Slavonski Brod",
journal = "Tehnički vjesnik",
title = "Software/hardware design of decision-making controllers for object navigation in horizontal plane",
pages = "1784-1777",
number = "6",
volume = "24",
doi = "10.17559/TV-20160408195923"
}

Boulahlib, M. A., Milinović, M., Bendjaballah, M., Jeremić, O.,& Sakan, N.. (2017). Software/hardware design of decision-making controllers for object navigation in horizontal plane. in Tehnički vjesnik
Univ Osijek, Tech Fac, Slavonski Brod., 24(6), 1777-1784.
https://doi.org/10.17559/TV-20160408195923

Boulahlib MA, Milinović M, Bendjaballah M, Jeremić O, Sakan N. Software/hardware design of decision-making controllers for object navigation in horizontal plane. in Tehnički vjesnik. 2017;24(6):1777-1784.
doi:10.17559/TV-20160408195923 .

Boulahlib, Mohammed Amine, Milinović, Momčilo, Bendjaballah, Mourad, Jeremić, Olivera, Sakan, Nenad, "Software/hardware design of decision-making controllers for object navigation in horizontal plane" in Tehnički vjesnik, 24, no. 6 (2017):1777-1784,
https://doi.org/10.17559/TV-20160408195923 . .

TY  - CONF
AU  - Elek, Predrag
AU  - Jaramaz, Slobodan
AU  - Micković, Dejan
AU  - Đorđević, Miroslav
AU  - Miloradović, Nenad
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4591
AB  - Characterization of behind armor debris (BAD) is of utmost importance from the aspect of evaluation of an armor piercing projectile efficiency as well as from the point of target vulnerability. In the present study, the research focus is on the size, mass and shape distribution of fragments generated from the target plate. The experimental results of perforation of 6.35 mm thick steel plates by 12.7 mm armor-piercing projectile have been reported. Projectile impact and residual velocity were measured by the muzzle velocity radar system and make-up screens, respectively. Distribution of a generated BAD cloud and its energetic properties were determined using the calibrated witness pack. The proposed analytical model of the problem is based on the energy conservation, fracture mechanics and fragmentation theory. A good agreement is observed between calculated results and experimental data in terms of the shape, characteristic size and mass distribution of generated fragments. The further research will be focused on the spatial distribution of fragments, as well as on the distribution of their velocities.
PB  - Belgrade : Military Technical Institute
C3  - 7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016
T1  - Characterization of behind armor debris after perforation of steel plates by armor piercing projectile
EP  - 277
SP  - 272
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4591
ER  - 

@conference{
author = "Elek, Predrag and Jaramaz, Slobodan and Micković, Dejan and Đorđević, Miroslav and Miloradović, Nenad",
year = "2016",
abstract = "Characterization of behind armor debris (BAD) is of utmost importance from the aspect of evaluation of an armor piercing projectile efficiency as well as from the point of target vulnerability. In the present study, the research focus is on the size, mass and shape distribution of fragments generated from the target plate. The experimental results of perforation of 6.35 mm thick steel plates by 12.7 mm armor-piercing projectile have been reported. Projectile impact and residual velocity were measured by the muzzle velocity radar system and make-up screens, respectively. Distribution of a generated BAD cloud and its energetic properties were determined using the calibrated witness pack. The proposed analytical model of the problem is based on the energy conservation, fracture mechanics and fragmentation theory. A good agreement is observed between calculated results and experimental data in terms of the shape, characteristic size and mass distribution of generated fragments. The further research will be focused on the spatial distribution of fragments, as well as on the distribution of their velocities.",
publisher = "Belgrade : Military Technical Institute",
journal = "7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016",
title = "Characterization of behind armor debris after perforation of steel plates by armor piercing projectile",
pages = "277-272",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4591"
}

Elek, P., Jaramaz, S., Micković, D., Đorđević, M.,& Miloradović, N.. (2016). Characterization of behind armor debris after perforation of steel plates by armor piercing projectile. in 7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016
Belgrade : Military Technical Institute., 272-277.
https://hdl.handle.net/21.15107/rcub_machinery_4591

Elek P, Jaramaz S, Micković D, Đorđević M, Miloradović N. Characterization of behind armor debris after perforation of steel plates by armor piercing projectile. in 7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016. 2016;:272-277.
https://hdl.handle.net/21.15107/rcub_machinery_4591 .

Elek, Predrag, Jaramaz, Slobodan, Micković, Dejan, Đorđević, Miroslav, Miloradović, Nenad, "Characterization of behind armor debris after perforation of steel plates by armor piercing projectile" in 7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016 (2016):272-277,
https://hdl.handle.net/21.15107/rcub_machinery_4591 .

TY  - CONF
AU  - Micković, Dejan
AU  - Jaramaz, Slobodan
AU  - Elek, Predrag
AU  - Miloradović, Nenad
AU  - Micković, Dušan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4909
AB  - Study of interaction of explosive reactive armor (ERA) with shaped charge jet is the basis for evaluation of the effectiveness of ERA. The physically based theoretical model of this interaction is given. It is incorporated in the NERA computer code. The influences of backward moving plate and forward moving plate thickness, explosive layer thickness, jet attack angle, and distance between ERA and main armor are investigated. Computational results of NERA code are
compared with experimental data. The computational and experimental results of penetration in the steel armor target are in good agreement. The results of NERA code calculations reveal the possibilities for an improvement of ERA efficiency.
PB  - Belgrade : Military Technical Institute
C3  - 7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016
T1  - Explosive reactive armor action against shaped charge jet
SP  - 304-309
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4909
ER  - 

@conference{
author = "Micković, Dejan and Jaramaz, Slobodan and Elek, Predrag and Miloradović, Nenad and Micković, Dušan",
year = "2016",
abstract = "Study of interaction of explosive reactive armor (ERA) with shaped charge jet is the basis for evaluation of the effectiveness of ERA. The physically based theoretical model of this interaction is given. It is incorporated in the NERA computer code. The influences of backward moving plate and forward moving plate thickness, explosive layer thickness, jet attack angle, and distance between ERA and main armor are investigated. Computational results of NERA code are
compared with experimental data. The computational and experimental results of penetration in the steel armor target are in good agreement. The results of NERA code calculations reveal the possibilities for an improvement of ERA efficiency.",
publisher = "Belgrade : Military Technical Institute",
journal = "7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016",
title = "Explosive reactive armor action against shaped charge jet",
pages = "304-309",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4909"
}

Micković, D., Jaramaz, S., Elek, P., Miloradović, N.,& Micković, D.. (2016). Explosive reactive armor action against shaped charge jet. in 7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016
Belgrade : Military Technical Institute., 304-309.
https://hdl.handle.net/21.15107/rcub_machinery_4909

Micković D, Jaramaz S, Elek P, Miloradović N, Micković D. Explosive reactive armor action against shaped charge jet. in 7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016. 2016;:304-309.
https://hdl.handle.net/21.15107/rcub_machinery_4909 .

Micković, Dejan, Jaramaz, Slobodan, Elek, Predrag, Miloradović, Nenad, Micković, Dušan, "Explosive reactive armor action against shaped charge jet" in 7th International Conference on Defensive Technologies - OTEH 2016, Belgrade, 6-7 October 2016 (2016):304-309,
https://hdl.handle.net/21.15107/rcub_machinery_4909 .

TY  - JOUR
AU  - Marković, Miloš
AU  - Milinović, Momčilo
AU  - Jeremić, Olivera
AU  - Jaramaz, Slobodan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2305
AB  - The research in this paper considered the temperatures fields as the consequently influenced effects appeared by plastic deformation, in the explosively forming process aimed to design explosively formed projectiles. As the special payloads of the missiles, used projectiles are packaged as the metal liners, joined with explosive charges, to design explosive propulsion effect. Their final form and velocity during shaping depend on distributed temperatures in explosively driven plastic deformation process. Developed simulation model consider forming process without metal cover of explosive charge, in aim to discover liner's dynamical correlations of effective plastic strains and temperatures in the unconstrained detonation environment made by payload construction. The temperature fields of the liner copper material are considered in time, as the consequence of strain/stress displacements driven by explosion environmental thermodynamically fields of pressures and temperatures. Achieved final velocities and mass loses as the expected explosively formed projectiles performances are estimated regarding their dynamical shaping and thermal gradients behavior vs. effective plastic strains. Performances and parameters are presented vs. process time, numerically simulated by the Autodyne software package.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Simulation of changes in temperature and pressure fields during high speed projectiles forming by explosion
EP  - 1752
IS  - 5
SP  - 1741
VL  - 20
DO  - 10.2298/TSCI151217073M
ER  - 

@article{
author = "Marković, Miloš and Milinović, Momčilo and Jeremić, Olivera and Jaramaz, Slobodan",
year = "2016",
abstract = "The research in this paper considered the temperatures fields as the consequently influenced effects appeared by plastic deformation, in the explosively forming process aimed to design explosively formed projectiles. As the special payloads of the missiles, used projectiles are packaged as the metal liners, joined with explosive charges, to design explosive propulsion effect. Their final form and velocity during shaping depend on distributed temperatures in explosively driven plastic deformation process. Developed simulation model consider forming process without metal cover of explosive charge, in aim to discover liner's dynamical correlations of effective plastic strains and temperatures in the unconstrained detonation environment made by payload construction. The temperature fields of the liner copper material are considered in time, as the consequence of strain/stress displacements driven by explosion environmental thermodynamically fields of pressures and temperatures. Achieved final velocities and mass loses as the expected explosively formed projectiles performances are estimated regarding their dynamical shaping and thermal gradients behavior vs. effective plastic strains. Performances and parameters are presented vs. process time, numerically simulated by the Autodyne software package.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Simulation of changes in temperature and pressure fields during high speed projectiles forming by explosion",
pages = "1752-1741",
number = "5",
volume = "20",
doi = "10.2298/TSCI151217073M"
}

Marković, M., Milinović, M., Jeremić, O.,& Jaramaz, S.. (2016). Simulation of changes in temperature and pressure fields during high speed projectiles forming by explosion. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 20(5), 1741-1752.
https://doi.org/10.2298/TSCI151217073M

Marković M, Milinović M, Jeremić O, Jaramaz S. Simulation of changes in temperature and pressure fields during high speed projectiles forming by explosion. in Thermal Science. 2016;20(5):1741-1752.
doi:10.2298/TSCI151217073M .

Marković, Miloš, Milinović, Momčilo, Jeremić, Olivera, Jaramaz, Slobodan, "Simulation of changes in temperature and pressure fields during high speed projectiles forming by explosion" in Thermal Science, 20, no. 5 (2016):1741-1752,
https://doi.org/10.2298/TSCI151217073M . .

TY  - JOUR
AU  - Elek, Predrag
AU  - Jaramaz, Slobodan
AU  - Micković, Dejan
AU  - Miloradović, Nenad
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2426
AB  - This paper considers the modeling of perforation of thin steel plates by cylindrical steel penetrators fragment simulators. A comprehensive experimental investigation was performed and relevant data about the experiment setup and measuring equipment are reported. A numerical model developed in FEM based software Abaqus is described in detail. The Johnson-Cook thermo-viscoplastic constitutive law, as well as the Johnson-Cook damage model is used in the model. It has been shown that simulations correctly reproduce the main mechanisms of penetration process - indentation, bulging and plugging. Computational results are compared with experimental data in terms of the ballistic curves - diagrams that define the dependence of penetrator residual velocity on its impact velocity. The comparison of numerically obtained and measured values of deformed penetrator's diameter, plug thickness and maximum plate deflection has been also performed. Very good overall agreement is obtained between results of simulation and experimental measurements. After the validation of the numerical model, some empirical relations between perforation process parameters are derived.
PB  - Elsevier Sci Ltd, Oxford
T2  - Thin-Walled Structures
T1  - Experimental and numerical investigation of perforation of thin steel plates by deformable steel penetrators
EP  - 67
SP  - 58
VL  - 102
DO  - 10.1016/j.tws.2016.01.022
ER  - 

@article{
author = "Elek, Predrag and Jaramaz, Slobodan and Micković, Dejan and Miloradović, Nenad",
year = "2016",
abstract = "This paper considers the modeling of perforation of thin steel plates by cylindrical steel penetrators fragment simulators. A comprehensive experimental investigation was performed and relevant data about the experiment setup and measuring equipment are reported. A numerical model developed in FEM based software Abaqus is described in detail. The Johnson-Cook thermo-viscoplastic constitutive law, as well as the Johnson-Cook damage model is used in the model. It has been shown that simulations correctly reproduce the main mechanisms of penetration process - indentation, bulging and plugging. Computational results are compared with experimental data in terms of the ballistic curves - diagrams that define the dependence of penetrator residual velocity on its impact velocity. The comparison of numerically obtained and measured values of deformed penetrator's diameter, plug thickness and maximum plate deflection has been also performed. Very good overall agreement is obtained between results of simulation and experimental measurements. After the validation of the numerical model, some empirical relations between perforation process parameters are derived.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Thin-Walled Structures",
title = "Experimental and numerical investigation of perforation of thin steel plates by deformable steel penetrators",
pages = "67-58",
volume = "102",
doi = "10.1016/j.tws.2016.01.022"
}

Elek, P., Jaramaz, S., Micković, D.,& Miloradović, N.. (2016). Experimental and numerical investigation of perforation of thin steel plates by deformable steel penetrators. in Thin-Walled Structures
Elsevier Sci Ltd, Oxford., 102, 58-67.
https://doi.org/10.1016/j.tws.2016.01.022

Elek P, Jaramaz S, Micković D, Miloradović N. Experimental and numerical investigation of perforation of thin steel plates by deformable steel penetrators. in Thin-Walled Structures. 2016;102:58-67.
doi:10.1016/j.tws.2016.01.022 .

Elek, Predrag, Jaramaz, Slobodan, Micković, Dejan, Miloradović, Nenad, "Experimental and numerical investigation of perforation of thin steel plates by deformable steel penetrators" in Thin-Walled Structures, 102 (2016):58-67,
https://doi.org/10.1016/j.tws.2016.01.022 . .

TY  - JOUR
AU  - Micković, Dejan
AU  - Jaramaz, Slobodan
AU  - Elek, Predrag
AU  - Miloradović, Nenad
AU  - Jaramaz, Dragana
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2442
AB  - Study of interaction of explosive reactive armor (ERA) with shaped charge jet is the basis for evaluation of the effectiveness of ERA. The physically based theoretical model of this interaction is given. It is incorporated in the NERA computer code. The influences of backward moving plate and forward moving plate thickness, explosive layer thickness, jet attack angle, and distance between ERA and main armor are investigated. The comprehensive analysis of a longitudinal point of impact effect on ERA efficiency, based on NERA code calculations, is presented. Computational results of NERA code are compared with experimental data. The computational and experimental results of penetration in the steel armour target are in good agreement. The developed code enables optimization of explosive reactive armor characteristics.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Propellants Explosives Pyrotechnics
T1  - A Model for Explosive Reactive Armor Interaction with Shaped Charge Jet
EP  - 61
IS  - 1
SP  - 53
VL  - 41
DO  - 10.1002/prep.201500163
ER  - 

@article{
author = "Micković, Dejan and Jaramaz, Slobodan and Elek, Predrag and Miloradović, Nenad and Jaramaz, Dragana",
year = "2016",
abstract = "Study of interaction of explosive reactive armor (ERA) with shaped charge jet is the basis for evaluation of the effectiveness of ERA. The physically based theoretical model of this interaction is given. It is incorporated in the NERA computer code. The influences of backward moving plate and forward moving plate thickness, explosive layer thickness, jet attack angle, and distance between ERA and main armor are investigated. The comprehensive analysis of a longitudinal point of impact effect on ERA efficiency, based on NERA code calculations, is presented. Computational results of NERA code are compared with experimental data. The computational and experimental results of penetration in the steel armour target are in good agreement. The developed code enables optimization of explosive reactive armor characteristics.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Propellants Explosives Pyrotechnics",
title = "A Model for Explosive Reactive Armor Interaction with Shaped Charge Jet",
pages = "61-53",
number = "1",
volume = "41",
doi = "10.1002/prep.201500163"
}

Micković, D., Jaramaz, S., Elek, P., Miloradović, N.,& Jaramaz, D.. (2016). A Model for Explosive Reactive Armor Interaction with Shaped Charge Jet. in Propellants Explosives Pyrotechnics
Wiley-V C H Verlag Gmbh, Weinheim., 41(1), 53-61.
https://doi.org/10.1002/prep.201500163

Micković D, Jaramaz S, Elek P, Miloradović N, Jaramaz D. A Model for Explosive Reactive Armor Interaction with Shaped Charge Jet. in Propellants Explosives Pyrotechnics. 2016;41(1):53-61.
doi:10.1002/prep.201500163 .

Micković, Dejan, Jaramaz, Slobodan, Elek, Predrag, Miloradović, Nenad, Jaramaz, Dragana, "A Model for Explosive Reactive Armor Interaction with Shaped Charge Jet" in Propellants Explosives Pyrotechnics, 41, no. 1 (2016):53-61,
https://doi.org/10.1002/prep.201500163 . .

TY  - CONF
AU  - Elek, Predrag
AU  - Jaramaz, Slobodan
AU  - Micković, Dejan
AU  - Miloradović, Nenad
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4592
AB  - The paper considers the modeling of perforation of thin steel plates by cylindrical steel
penetrators – fragment simulators. This problem is significant primarily for military applications.
A comprehensive experimental investigation was performed and relevant data about experiment
setup and measuring equipment are reported. A numerical model developed in FEM based
software Abaqus is described in detail. The Johnson-Cook thermo-viscoplastic constitutive law,
as well as the Johnson-Cook damage model is used in the model. It has been shown that
simulations correctly reproduce the main mechanisms of penetration process – indentation,
bulging and plugging. Computational results are compared with experimental data in terms of the
ballistic curves – diagrams that define the dependence of penetrator residual velocity on its
impact velocity. Very good agreement is obtained between results of simulation and experimental
measurements. The further investigations will be focused on comparison of deformations of
penetrator and plate, energetic aspects of the process, and improvement of the numerical model.
PB  - Serbian Society of Mechanics
C3  - 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015
T1  - Experimental and numerical analysis of perforation of thin steel plates by deformable steel penetrators
EP  - 8
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4592
ER  - 

@conference{
author = "Elek, Predrag and Jaramaz, Slobodan and Micković, Dejan and Miloradović, Nenad",
year = "2015",
abstract = "The paper considers the modeling of perforation of thin steel plates by cylindrical steel
penetrators – fragment simulators. This problem is significant primarily for military applications.
A comprehensive experimental investigation was performed and relevant data about experiment
setup and measuring equipment are reported. A numerical model developed in FEM based
software Abaqus is described in detail. The Johnson-Cook thermo-viscoplastic constitutive law,
as well as the Johnson-Cook damage model is used in the model. It has been shown that
simulations correctly reproduce the main mechanisms of penetration process – indentation,
bulging and plugging. Computational results are compared with experimental data in terms of the
ballistic curves – diagrams that define the dependence of penetrator residual velocity on its
impact velocity. Very good agreement is obtained between results of simulation and experimental
measurements. The further investigations will be focused on comparison of deformations of
penetrator and plate, energetic aspects of the process, and improvement of the numerical model.",
publisher = "Serbian Society of Mechanics",
journal = "5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015",
title = "Experimental and numerical analysis of perforation of thin steel plates by deformable steel penetrators",
pages = "8-1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4592"
}

Elek, P., Jaramaz, S., Micković, D.,& Miloradović, N.. (2015). Experimental and numerical analysis of perforation of thin steel plates by deformable steel penetrators. in 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015
Serbian Society of Mechanics., 1-8.
https://hdl.handle.net/21.15107/rcub_machinery_4592

Elek P, Jaramaz S, Micković D, Miloradović N. Experimental and numerical analysis of perforation of thin steel plates by deformable steel penetrators. in 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015. 2015;:1-8.
https://hdl.handle.net/21.15107/rcub_machinery_4592 .

Elek, Predrag, Jaramaz, Slobodan, Micković, Dejan, Miloradović, Nenad, "Experimental and numerical analysis of perforation of thin steel plates by deformable steel penetrators" in 5th International Congress of Serbian Society of Mechanics, Arandjelovac, June 15-17, 2015 (2015):1-8,
https://hdl.handle.net/21.15107/rcub_machinery_4592 .

TY  - CONF
AU  - Marković, Miloš
AU  - Milinović, Momčilo
AU  - Jeremić, Olivera
AU  - Jaramaz, Slobodan
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5940
AB  - Paper expose the forming of Explosively Formed Projectiles (henceforth EFP) used for the
special types of warheads. Model is designed without metal covers of explosive charge in order to
represent temperature effects on melted core (henceforth liner) of EFP, powered by initial explosive shocks
waves and realized velocities. Presented numerical approach of temperature and dynamical calculations at
the very beginning of initiation has aim to estimated performances of EFP regarding forming dynamics,
energies, projectile shapes and initial velocities.
PB  - Society of Thermal Engineers of Serbia, Faculty of Mechanical Engineering in Niš
C3  - 17th Symposium on Thermal Science and Engineering of Serbia
T1  - Numerical modeling of temperature field on high velocity explosively formed projectile
EP  - 180
SP  - 175
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5940
ER  - 

@conference{
author = "Marković, Miloš and Milinović, Momčilo and Jeremić, Olivera and Jaramaz, Slobodan",
year = "2015",
abstract = "Paper expose the forming of Explosively Formed Projectiles (henceforth EFP) used for the
special types of warheads. Model is designed without metal covers of explosive charge in order to
represent temperature effects on melted core (henceforth liner) of EFP, powered by initial explosive shocks
waves and realized velocities. Presented numerical approach of temperature and dynamical calculations at
the very beginning of initiation has aim to estimated performances of EFP regarding forming dynamics,
energies, projectile shapes and initial velocities.",
publisher = "Society of Thermal Engineers of Serbia, Faculty of Mechanical Engineering in Niš",
journal = "17th Symposium on Thermal Science and Engineering of Serbia",
title = "Numerical modeling of temperature field on high velocity explosively formed projectile",
pages = "180-175",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5940"
}

Marković, M., Milinović, M., Jeremić, O.,& Jaramaz, S.. (2015). Numerical modeling of temperature field on high velocity explosively formed projectile. in 17th Symposium on Thermal Science and Engineering of Serbia
Society of Thermal Engineers of Serbia, Faculty of Mechanical Engineering in Niš., 175-180.
https://hdl.handle.net/21.15107/rcub_machinery_5940

Marković M, Milinović M, Jeremić O, Jaramaz S. Numerical modeling of temperature field on high velocity explosively formed projectile. in 17th Symposium on Thermal Science and Engineering of Serbia. 2015;:175-180.
https://hdl.handle.net/21.15107/rcub_machinery_5940 .

Marković, Miloš, Milinović, Momčilo, Jeremić, Olivera, Jaramaz, Slobodan, "Numerical modeling of temperature field on high velocity explosively formed projectile" in 17th Symposium on Thermal Science and Engineering of Serbia (2015):175-180,
https://hdl.handle.net/21.15107/rcub_machinery_5940 .

TY  - JOUR
AU  - Kapor, Nenad
AU  - Milinović, Momčilo
AU  - Jeremić, Olivera
AU  - Petrović, Dalibor
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2231
AB  - This paper considers the modelling of extreme-capability working platforms that are operated in periodic cycles, each cycle having a pre-defined number of operations that affect the working surfaces. A novel hypothesis is introduced about the platform-degrading effects that cause an equivalent decrease in the successful operations after repeated cycles. Deterministic modelling, based on the basic equations of Lanchester and Dinner, is generalized here to include coupling between parameters. The newly developed mathematical model of performance degradation is in good agreement with both experimental measurements and numerical simulations. It is assumed that the new variables and their correlations link the Gaussian distribution and the observed performances of the testing platforms. Relative probability dispersions of affected surfaces are derived, as a new indirect referencing figure of merit, to describe simulations and compare them to experimental test data. The model proves a hypothesis that the degrading effects are a function of the platform capacity, frequency of operations and the number of available cycles. Degradation effects are taken into account through an equivalent decrease of effective operation capacities, reflected on the properties of the affected operating surfaces. The obtained estimations of degradation could be used in the planning of platform capacity as well as in the selection of real affected surfaces in various machining systems and for a wide range of different materials.
PB  - Assoc Mechanical Engineers Technicians Slovenia, Ljubljana
T2  - Strojniski Vestnik-Journal of Mechanical Engineering
T1  - Deterministic Mathematical Modelling of Platform Performance Degradation in Cyclic Operation Regimes
EP  - 175
IS  - 3
SP  - 167
VL  - 61
DO  - 10.5545/sv-jme.2014.2294
ER  - 

@article{
author = "Kapor, Nenad and Milinović, Momčilo and Jeremić, Olivera and Petrović, Dalibor",
year = "2015",
abstract = "This paper considers the modelling of extreme-capability working platforms that are operated in periodic cycles, each cycle having a pre-defined number of operations that affect the working surfaces. A novel hypothesis is introduced about the platform-degrading effects that cause an equivalent decrease in the successful operations after repeated cycles. Deterministic modelling, based on the basic equations of Lanchester and Dinner, is generalized here to include coupling between parameters. The newly developed mathematical model of performance degradation is in good agreement with both experimental measurements and numerical simulations. It is assumed that the new variables and their correlations link the Gaussian distribution and the observed performances of the testing platforms. Relative probability dispersions of affected surfaces are derived, as a new indirect referencing figure of merit, to describe simulations and compare them to experimental test data. The model proves a hypothesis that the degrading effects are a function of the platform capacity, frequency of operations and the number of available cycles. Degradation effects are taken into account through an equivalent decrease of effective operation capacities, reflected on the properties of the affected operating surfaces. The obtained estimations of degradation could be used in the planning of platform capacity as well as in the selection of real affected surfaces in various machining systems and for a wide range of different materials.",
publisher = "Assoc Mechanical Engineers Technicians Slovenia, Ljubljana",
journal = "Strojniski Vestnik-Journal of Mechanical Engineering",
title = "Deterministic Mathematical Modelling of Platform Performance Degradation in Cyclic Operation Regimes",
pages = "175-167",
number = "3",
volume = "61",
doi = "10.5545/sv-jme.2014.2294"
}

Kapor, N., Milinović, M., Jeremić, O.,& Petrović, D.. (2015). Deterministic Mathematical Modelling of Platform Performance Degradation in Cyclic Operation Regimes. in Strojniski Vestnik-Journal of Mechanical Engineering
Assoc Mechanical Engineers Technicians Slovenia, Ljubljana., 61(3), 167-175.
https://doi.org/10.5545/sv-jme.2014.2294

Kapor N, Milinović M, Jeremić O, Petrović D. Deterministic Mathematical Modelling of Platform Performance Degradation in Cyclic Operation Regimes. in Strojniski Vestnik-Journal of Mechanical Engineering. 2015;61(3):167-175.
doi:10.5545/sv-jme.2014.2294 .

Kapor, Nenad, Milinović, Momčilo, Jeremić, Olivera, Petrović, Dalibor, "Deterministic Mathematical Modelling of Platform Performance Degradation in Cyclic Operation Regimes" in Strojniski Vestnik-Journal of Mechanical Engineering, 61, no. 3 (2015):167-175,
https://doi.org/10.5545/sv-jme.2014.2294 . .

TY  - CONF
AU  - Marković, Miloš
AU  - Milinović, Momčilo
AU  - Elek, Predrag
AU  - Micković, Dejan
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5964
AB  - This paper presents numerical and analytical approach calculations of EFP (Explosively Formed Projectiles)
performances. The aim is to show the influences of EFP warheads as covered or without cover in order to represent
comparative influences on liner initial velocities. Based on the numerical (AUTODYN simulation) and traditional east
literature rooted analytical modeling , the discussion is considered. Results circled forming dynamics, energies, projectile shapes and initial velocities. Obtained data are approved by allowable experimental test and are compared
sequently.
PB  - Труды Томского государственного университета.
C3  - Актуальные проблемы современной механики сплошных сред и небесной механики, Международная молодежная научная конференция, 17–19 ноября 2014 г., Томск
T1  - СРАВНИТЕЛЬНЫЕ ПОДХОДЫ К МОДЕЛИРОВАНИЮ ВЗРЫВООБРАЗНО СФОРМИРОВАННОГО СНАРЯДА
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5964
ER  - 

@conference{
author = "Marković, Miloš and Milinović, Momčilo and Elek, Predrag and Micković, Dejan",
year = "2015",
abstract = "This paper presents numerical and analytical approach calculations of EFP (Explosively Formed Projectiles)
performances. The aim is to show the influences of EFP warheads as covered or without cover in order to represent
comparative influences on liner initial velocities. Based on the numerical (AUTODYN simulation) and traditional east
literature rooted analytical modeling , the discussion is considered. Results circled forming dynamics, energies, projectile shapes and initial velocities. Obtained data are approved by allowable experimental test and are compared
sequently.",
publisher = "Труды Томского государственного университета.",
journal = "Актуальные проблемы современной механики сплошных сред и небесной механики, Международная молодежная научная конференция, 17–19 ноября 2014 г., Томск",
title = "СРАВНИТЕЛЬНЫЕ ПОДХОДЫ К МОДЕЛИРОВАНИЮ ВЗРЫВООБРАЗНО СФОРМИРОВАННОГО СНАРЯДА",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5964"
}

Marković, M., Milinović, M., Elek, P.,& Micković, D.. (2015). СРАВНИТЕЛЬНЫЕ ПОДХОДЫ К МОДЕЛИРОВАНИЮ ВЗРЫВООБРАЗНО СФОРМИРОВАННОГО СНАРЯДА. in Актуальные проблемы современной механики сплошных сред и небесной механики, Международная молодежная научная конференция, 17–19 ноября 2014 г., Томск
Труды Томского государственного университета...
https://hdl.handle.net/21.15107/rcub_machinery_5964

Marković M, Milinović M, Elek P, Micković D. СРАВНИТЕЛЬНЫЕ ПОДХОДЫ К МОДЕЛИРОВАНИЮ ВЗРЫВООБРАЗНО СФОРМИРОВАННОГО СНАРЯДА. in Актуальные проблемы современной механики сплошных сред и небесной механики, Международная молодежная научная конференция, 17–19 ноября 2014 г., Томск. 2015;.
https://hdl.handle.net/21.15107/rcub_machinery_5964 .

Marković, Miloš, Milinović, Momčilo, Elek, Predrag, Micković, Dejan, "СРАВНИТЕЛЬНЫЕ ПОДХОДЫ К МОДЕЛИРОВАНИЮ ВЗРЫВООБРАЗНО СФОРМИРОВАННОГО СНАРЯДА" in Актуальные проблемы современной механики сплошных сред и небесной механики, Международная молодежная научная конференция, 17–19 ноября 2014 г., Томск (2015),
https://hdl.handle.net/21.15107/rcub_machinery_5964 .

TY  - JOUR
AU  - Elek, Predrag
AU  - Dzingalasević, Vesna V.
AU  - Jaramaz, Slobodan
AU  - Micković, Dejan
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2205
AB  - Contemporary research in the field of explosive applications implies utilization of hydrocode simulations. Validity of these simulations strongly depends on parameters used in the equation of state for high explosives considered. A new analytical model for determination of Jones-Wilkins-Lee equation of state parameters based on the cylinder test is proposed. The model relies on analysis of the metal cylinder expansion by detonation products. Available cylinder test data for five high explosives are used for the calculation of Jones-Wilkins-Lee parameters. Good agreement between results of the model and the literature data is observed, justifying the suggested analytical approach. Numerical finite element model of the cylinder test is created in Abaqus in order to validate the proposed model. Using the analytical model results as the input, it was shown that numerical simulation of the cylinder test accurately reproduces experimental results for all considered high explosives. Therefore, both the analytical method for calculation of Jones-Wilkins-Lee equation of state parameters and numerical Abaqus model of the cylinder test are validated.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Determination of detonation products equation of state from cylinder test: analytical model and numerical analysis
EP  - 48
IS  - 1
SP  - 35
VL  - 19
DO  - 10.2298/TSCI121029138E
ER  - 

@article{
author = "Elek, Predrag and Dzingalasević, Vesna V. and Jaramaz, Slobodan and Micković, Dejan",
year = "2015",
abstract = "Contemporary research in the field of explosive applications implies utilization of hydrocode simulations. Validity of these simulations strongly depends on parameters used in the equation of state for high explosives considered. A new analytical model for determination of Jones-Wilkins-Lee equation of state parameters based on the cylinder test is proposed. The model relies on analysis of the metal cylinder expansion by detonation products. Available cylinder test data for five high explosives are used for the calculation of Jones-Wilkins-Lee parameters. Good agreement between results of the model and the literature data is observed, justifying the suggested analytical approach. Numerical finite element model of the cylinder test is created in Abaqus in order to validate the proposed model. Using the analytical model results as the input, it was shown that numerical simulation of the cylinder test accurately reproduces experimental results for all considered high explosives. Therefore, both the analytical method for calculation of Jones-Wilkins-Lee equation of state parameters and numerical Abaqus model of the cylinder test are validated.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Determination of detonation products equation of state from cylinder test: analytical model and numerical analysis",
pages = "48-35",
number = "1",
volume = "19",
doi = "10.2298/TSCI121029138E"
}

Elek, P., Dzingalasević, V. V., Jaramaz, S.,& Micković, D.. (2015). Determination of detonation products equation of state from cylinder test: analytical model and numerical analysis. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 19(1), 35-48.
https://doi.org/10.2298/TSCI121029138E

Elek P, Dzingalasević VV, Jaramaz S, Micković D. Determination of detonation products equation of state from cylinder test: analytical model and numerical analysis. in Thermal Science. 2015;19(1):35-48.
doi:10.2298/TSCI121029138E .

Elek, Predrag, Dzingalasević, Vesna V., Jaramaz, Slobodan, Micković, Dejan, "Determination of detonation products equation of state from cylinder test: analytical model and numerical analysis" in Thermal Science, 19, no. 1 (2015):35-48,
https://doi.org/10.2298/TSCI121029138E . .

TY  - CONF
AU  - Elek, Predrag
AU  - Jaramaz, Slobodan
AU  - Micković, Dejan
AU  - Miloradović, Nenad
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4868
AB  - Determination of velocity of fragments and their rejection angles is of the critical importance in the
fragmentation warheads design and evaluation of warhead efficiency. It is well known that simplified analytical approaches, like Gurney equations and Taylor formula, provide only a rough estimate of velocity vector of fragments. Therefore, numerical approach is logical and inevitable choice when the more accurate calculations are needed. In the present paper, the commercial multi-purpose program Abaqus, based on the finite element method, is used for simulation of the mechanism of explosive propulsion. Applied modeling techniques as well as the procedure of the
model creation through the modules of Abaqus have been presented. Experimental results of a well documented test of the fragmentation warhead with premade fragments are compared with the simulation results of the corresponding numerical model. Very good agreement between experimental data and the numerical results suggests that Abaqus can be successfully used for simulation of warhead mechanisms
PB  - Belgrade : Military Technical Institute
C3  - 6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014
T1  - Numerical simulation of fragmentation warhead mechanisms
EP  - 234
SP  - 229
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4868
ER  - 

@conference{
author = "Elek, Predrag and Jaramaz, Slobodan and Micković, Dejan and Miloradović, Nenad",
year = "2014",
abstract = "Determination of velocity of fragments and their rejection angles is of the critical importance in the
fragmentation warheads design and evaluation of warhead efficiency. It is well known that simplified analytical approaches, like Gurney equations and Taylor formula, provide only a rough estimate of velocity vector of fragments. Therefore, numerical approach is logical and inevitable choice when the more accurate calculations are needed. In the present paper, the commercial multi-purpose program Abaqus, based on the finite element method, is used for simulation of the mechanism of explosive propulsion. Applied modeling techniques as well as the procedure of the
model creation through the modules of Abaqus have been presented. Experimental results of a well documented test of the fragmentation warhead with premade fragments are compared with the simulation results of the corresponding numerical model. Very good agreement between experimental data and the numerical results suggests that Abaqus can be successfully used for simulation of warhead mechanisms",
publisher = "Belgrade : Military Technical Institute",
journal = "6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014",
title = "Numerical simulation of fragmentation warhead mechanisms",
pages = "234-229",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4868"
}

Elek, P., Jaramaz, S., Micković, D.,& Miloradović, N.. (2014). Numerical simulation of fragmentation warhead mechanisms. in 6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014
Belgrade : Military Technical Institute., 229-234.
https://hdl.handle.net/21.15107/rcub_machinery_4868

Elek P, Jaramaz S, Micković D, Miloradović N. Numerical simulation of fragmentation warhead mechanisms. in 6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014. 2014;:229-234.
https://hdl.handle.net/21.15107/rcub_machinery_4868 .

Elek, Predrag, Jaramaz, Slobodan, Micković, Dejan, Miloradović, Nenad, "Numerical simulation of fragmentation warhead mechanisms" in 6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014 (2014):229-234,
https://hdl.handle.net/21.15107/rcub_machinery_4868 .

TY  - CONF
AU  - Živković, Saša
AU  - Filipović, Miloš
AU  - Elek, Predrag
AU  - Milinović, Momčilo
AU  - Gligorijević, Nikola
AU  - Boulahlib, Mohammed Amine
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4593
AB  - In solid propellant rocket motor internal ballistic calculation, next coefficients, performance parameters and characteristics are required: specific impulse, discharge coefficient, thrust coefficient and propellant burning rate law. All those RM working parameters can be theoretically or semi-empirically predicted, but depends from rocket motor design and combustion products flow losses; theoretical values can be very unreliable. Correction of theoretical working parameters can be provided using experimental data, although this approach is expensive and requires necessary experimental equipment. By using corrected working parameters in internal ballistic calculation highly precise results can be achieved, and accuracy of this approach is demonstrated in two different examples.
PB  - Belgrade : Military Technical Institute
C3  - 6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014
T1  - Experimental determination of rocket motor internal ballistic coefficients and performance parameters
SP  - 289-298
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4593
ER  - 

@conference{
author = "Živković, Saša and Filipović, Miloš and Elek, Predrag and Milinović, Momčilo and Gligorijević, Nikola and Boulahlib, Mohammed Amine",
year = "2014",
abstract = "In solid propellant rocket motor internal ballistic calculation, next coefficients, performance parameters and characteristics are required: specific impulse, discharge coefficient, thrust coefficient and propellant burning rate law. All those RM working parameters can be theoretically or semi-empirically predicted, but depends from rocket motor design and combustion products flow losses; theoretical values can be very unreliable. Correction of theoretical working parameters can be provided using experimental data, although this approach is expensive and requires necessary experimental equipment. By using corrected working parameters in internal ballistic calculation highly precise results can be achieved, and accuracy of this approach is demonstrated in two different examples.",
publisher = "Belgrade : Military Technical Institute",
journal = "6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014",
title = "Experimental determination of rocket motor internal ballistic coefficients and performance parameters",
pages = "289-298",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4593"
}

Živković, S., Filipović, M., Elek, P., Milinović, M., Gligorijević, N.,& Boulahlib, M. A.. (2014). Experimental determination of rocket motor internal ballistic coefficients and performance parameters. in 6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014
Belgrade : Military Technical Institute., 289-298.
https://hdl.handle.net/21.15107/rcub_machinery_4593

Živković S, Filipović M, Elek P, Milinović M, Gligorijević N, Boulahlib MA. Experimental determination of rocket motor internal ballistic coefficients and performance parameters. in 6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014. 2014;:289-298.
https://hdl.handle.net/21.15107/rcub_machinery_4593 .

Živković, Saša, Filipović, Miloš, Elek, Predrag, Milinović, Momčilo, Gligorijević, Nikola, Boulahlib, Mohammed Amine, "Experimental determination of rocket motor internal ballistic coefficients and performance parameters" in 6th International Scientific Conference – OTEH 2014, Belgrade, 9-10 October 2014 (2014):289-298,
https://hdl.handle.net/21.15107/rcub_machinery_4593 .

TY  - JOUR
AU  - Kari, Aleksandar
AU  - Jeremić, Olivera
AU  - Milinović, Momčilo
AU  - Jerković, Damir
AU  - Marković, Miloš
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5938
AB  - Model considered estimations of isolated shooting errors initiated by barrel
jumping after each particular bullet as the research of particular characteristic important
for gun mounting on the mobile platforms. Sequential influences of barrel disturbances
are included in the initial ballistics derivations independent of vehicle turret and
undercarriage. Expected disturbance magnitudes are analyzed during and beyond
shooting for the particular bullet in the ripple. Shooting ripple errors are analyzed
according to the angular disturbances transposed to the projectile initial ballistic
elements. Rate of barrel impeachments during firing is taken as the element of projectile
spin disturbance. Barrel system with appropriate recoil equipment is taken as the rigid
body model in the first approximation. Behaviour of 40 mm automatic gun as the
possible concept aimed at the shooting with small elevation angles, as mounted on the
mobile combat platforms was tested. Ballistic testing of real projectiles on the proving ground is used as reference to
selected gun particular errors. Further extended research was directed to the system’s
acceptable accuracy and stability in the cases of gun mounting on the Armour Personal
Carrier (APC).
PB  - Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
T2  - Problems of Mechatronics. Armament, Aviation, Safety Engineering
T1  - Shooting Errors Simulations Initiated by Barrel Jumping of 40 mm Turret Guns
EP  - 32
IS  - 4
SP  - 21
VL  - 5
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5938
ER  - 

@article{
author = "Kari, Aleksandar and Jeremić, Olivera and Milinović, Momčilo and Jerković, Damir and Marković, Miloš",
year = "2014",
abstract = "Model considered estimations of isolated shooting errors initiated by barrel
jumping after each particular bullet as the research of particular characteristic important
for gun mounting on the mobile platforms. Sequential influences of barrel disturbances
are included in the initial ballistics derivations independent of vehicle turret and
undercarriage. Expected disturbance magnitudes are analyzed during and beyond
shooting for the particular bullet in the ripple. Shooting ripple errors are analyzed
according to the angular disturbances transposed to the projectile initial ballistic
elements. Rate of barrel impeachments during firing is taken as the element of projectile
spin disturbance. Barrel system with appropriate recoil equipment is taken as the rigid
body model in the first approximation. Behaviour of 40 mm automatic gun as the
possible concept aimed at the shooting with small elevation angles, as mounted on the
mobile combat platforms was tested. Ballistic testing of real projectiles on the proving ground is used as reference to
selected gun particular errors. Further extended research was directed to the system’s
acceptable accuracy and stability in the cases of gun mounting on the Armour Personal
Carrier (APC).",
publisher = "Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego",
journal = "Problems of Mechatronics. Armament, Aviation, Safety Engineering",
title = "Shooting Errors Simulations Initiated by Barrel Jumping of 40 mm Turret Guns",
pages = "32-21",
number = "4",
volume = "5",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5938"
}

Kari, A., Jeremić, O., Milinović, M., Jerković, D.,& Marković, M.. (2014). Shooting Errors Simulations Initiated by Barrel Jumping of 40 mm Turret Guns. in Problems of Mechatronics. Armament, Aviation, Safety Engineering
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego., 5(4), 21-32.
https://hdl.handle.net/21.15107/rcub_machinery_5938

Kari A, Jeremić O, Milinović M, Jerković D, Marković M. Shooting Errors Simulations Initiated by Barrel Jumping of 40 mm Turret Guns. in Problems of Mechatronics. Armament, Aviation, Safety Engineering. 2014;5(4):21-32.
https://hdl.handle.net/21.15107/rcub_machinery_5938 .

Kari, Aleksandar, Jeremić, Olivera, Milinović, Momčilo, Jerković, Damir, Marković, Miloš, "Shooting Errors Simulations Initiated by Barrel Jumping of 40 mm Turret Guns" in Problems of Mechatronics. Armament, Aviation, Safety Engineering, 5, no. 4 (2014):21-32,
https://hdl.handle.net/21.15107/rcub_machinery_5938 .

TY  - JOUR
AU  - Milinović, Momčilo
AU  - Petrović, Dalibor
AU  - Jeremić, Olivera
AU  - Kovac, Mitar
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1920
AB  - The paper deals with mathematical models of sequent salvos battle, of autonomous flight missiles (AFM) organized in the groups of combatants. Tactical integration of AFM system distance-controlled weapon is considered by performances of simultaneous approaches on targets, and continual battle models of guerilla and direct fire, are redesigned to the discrete-continual mixed model, for checking missiles sudden, and further salvos, attack effects. Superiority parameters, as well as losses and strengths of full, or the part of salvo battle, for the missiles groups as technology sub-systems combatants', is expressed by mathematical and simulation examples. Targets engagements capacities of the missiles battle unit, is conducted through designed scenarios and mathematically derived in the research. Model orientated on answers about employment of rapid reaction defending tactics, by distance missiles attacks.
PB  - Defence Scientific Information Documentation Centre, Delhi
T2  - Defence Science Journal
T1  - Discrete Deterministic Modelling of Autonomous Missiles Salvos
EP  - 476
IS  - 5
SP  - 471
VL  - 64
DO  - 10.14429/dsj.64.5791
ER  - 

@article{
author = "Milinović, Momčilo and Petrović, Dalibor and Jeremić, Olivera and Kovac, Mitar",
year = "2014",
abstract = "The paper deals with mathematical models of sequent salvos battle, of autonomous flight missiles (AFM) organized in the groups of combatants. Tactical integration of AFM system distance-controlled weapon is considered by performances of simultaneous approaches on targets, and continual battle models of guerilla and direct fire, are redesigned to the discrete-continual mixed model, for checking missiles sudden, and further salvos, attack effects. Superiority parameters, as well as losses and strengths of full, or the part of salvo battle, for the missiles groups as technology sub-systems combatants', is expressed by mathematical and simulation examples. Targets engagements capacities of the missiles battle unit, is conducted through designed scenarios and mathematically derived in the research. Model orientated on answers about employment of rapid reaction defending tactics, by distance missiles attacks.",
publisher = "Defence Scientific Information Documentation Centre, Delhi",
journal = "Defence Science Journal",
title = "Discrete Deterministic Modelling of Autonomous Missiles Salvos",
pages = "476-471",
number = "5",
volume = "64",
doi = "10.14429/dsj.64.5791"
}

Milinović, M., Petrović, D., Jeremić, O.,& Kovac, M.. (2014). Discrete Deterministic Modelling of Autonomous Missiles Salvos. in Defence Science Journal
Defence Scientific Information Documentation Centre, Delhi., 64(5), 471-476.
https://doi.org/10.14429/dsj.64.5791

Milinović M, Petrović D, Jeremić O, Kovac M. Discrete Deterministic Modelling of Autonomous Missiles Salvos. in Defence Science Journal. 2014;64(5):471-476.
doi:10.14429/dsj.64.5791 .

Milinović, Momčilo, Petrović, Dalibor, Jeremić, Olivera, Kovac, Mitar, "Discrete Deterministic Modelling of Autonomous Missiles Salvos" in Defence Science Journal, 64, no. 5 (2014):471-476,
https://doi.org/10.14429/dsj.64.5791 . .