Simić, Goran

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  • Simić, Goran (36)
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Author's Bibliography

The role of relay valve with kinked characteristics in braking wagons with different brakes in a freight train

Milković, Dragan; Simić, Goran; Radulović, Saša; Lučanin, Vojkan; Kostić Miličić, Aleksandra

(University of Belgrade - Faculty of Mechanical Engineering, 2023)

TY  - CONF
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Radulović, Saša
AU  - Lučanin, Vojkan
AU  - Kostić Miličić, Aleksandra
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7294
AB  - This paper explains the problem of more pronounced heating of the wheels and wear of the brake shoes of equally loaded railway vehicles with SS or S2 tread brakes compared to wagons with S0 or S1 brakes when they are in the same train composition. As the mass of the railway vehicle increases and the square of the speed increases, the energy that is converted into heat during braking increases. In the case of tread brakes, this heat is dissipated to a lesser extent through the shoes, and to a greater extent through the wheel. Due to the uneven temperature field, parts of the wheel expand differently, and thermal stresses arise in the wheel. During extreme braking, the thermal stresses in the circumferential part of the wheel can exceed the yield point of the material, and as a result, permanent deformations occur due to circumferential compression. After cooling, residual tensile stresses are created in the direction of the wheel circumference. In extreme cases, this can cause the wheels to crack. For this reason, it is necessary to limit the intensity of braking, especially during long-term partial braking due to speed regulation on railway down slopes. However, the maximum braking force must not be limited. This is achieved by introducing a variable load relay valve with kinked characteristics. The Kink valve is a relay valve of a special design, which, based on the level of loading of the wagon, maps the pressure in the brake cylinder, so that when braking from 80 to 100% of the maximum pressure at all loads, the braking force is proportional to the load, and during partial braking, in in the case of a load over 14.5 t/axle, the braking force is reduced, so that the wheels do not overheat during frequent partial braking.
PB  - University of Belgrade - Faculty of Mechanical Engineering
C3  - "International Conference of Experimental and Numerical investigations and New Technologies" CNN Tech, 04-07 July 2023
T1  - The role of relay valve with kinked characteristics in braking wagons with different brakes in a freight train
EP  - 43
SP  - 43
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7294
ER  - 
@conference{
author = "Milković, Dragan and Simić, Goran and Radulović, Saša and Lučanin, Vojkan and Kostić Miličić, Aleksandra",
year = "2023",
abstract = "This paper explains the problem of more pronounced heating of the wheels and wear of the brake shoes of equally loaded railway vehicles with SS or S2 tread brakes compared to wagons with S0 or S1 brakes when they are in the same train composition. As the mass of the railway vehicle increases and the square of the speed increases, the energy that is converted into heat during braking increases. In the case of tread brakes, this heat is dissipated to a lesser extent through the shoes, and to a greater extent through the wheel. Due to the uneven temperature field, parts of the wheel expand differently, and thermal stresses arise in the wheel. During extreme braking, the thermal stresses in the circumferential part of the wheel can exceed the yield point of the material, and as a result, permanent deformations occur due to circumferential compression. After cooling, residual tensile stresses are created in the direction of the wheel circumference. In extreme cases, this can cause the wheels to crack. For this reason, it is necessary to limit the intensity of braking, especially during long-term partial braking due to speed regulation on railway down slopes. However, the maximum braking force must not be limited. This is achieved by introducing a variable load relay valve with kinked characteristics. The Kink valve is a relay valve of a special design, which, based on the level of loading of the wagon, maps the pressure in the brake cylinder, so that when braking from 80 to 100% of the maximum pressure at all loads, the braking force is proportional to the load, and during partial braking, in in the case of a load over 14.5 t/axle, the braking force is reduced, so that the wheels do not overheat during frequent partial braking.",
publisher = "University of Belgrade - Faculty of Mechanical Engineering",
journal = ""International Conference of Experimental and Numerical investigations and New Technologies" CNN Tech, 04-07 July 2023",
title = "The role of relay valve with kinked characteristics in braking wagons with different brakes in a freight train",
pages = "43-43",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7294"
}
Milković, D., Simić, G., Radulović, S., Lučanin, V.,& Kostić Miličić, A.. (2023). The role of relay valve with kinked characteristics in braking wagons with different brakes in a freight train. in "International Conference of Experimental and Numerical investigations and New Technologies" CNN Tech, 04-07 July 2023
University of Belgrade - Faculty of Mechanical Engineering., 43-43.
https://hdl.handle.net/21.15107/rcub_machinery_7294
Milković D, Simić G, Radulović S, Lučanin V, Kostić Miličić A. The role of relay valve with kinked characteristics in braking wagons with different brakes in a freight train. in "International Conference of Experimental and Numerical investigations and New Technologies" CNN Tech, 04-07 July 2023. 2023;:43-43.
https://hdl.handle.net/21.15107/rcub_machinery_7294 .
Milković, Dragan, Simić, Goran, Radulović, Saša, Lučanin, Vojkan, Kostić Miličić, Aleksandra, "The role of relay valve with kinked characteristics in braking wagons with different brakes in a freight train" in "International Conference of Experimental and Numerical investigations and New Technologies" CNN Tech, 04-07 July 2023 (2023):43-43,
https://hdl.handle.net/21.15107/rcub_machinery_7294 .

Proof tests of geometric-kinematic calculations of railway vehicles

Milković, Dragan; Simić, Goran; Lučanin, Vojkan; Radulović, Saša; Kostić Miličić, Aleksandra

(Faculty of Mechanical and Civil Engineering in Kraljevo, 2023)

TY  - CONF
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Lučanin, Vojkan
AU  - Radulović, Saša
AU  - Kostić Miličić, Aleksandra
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7284
AB  - Geometric-kinematic calculations and experimental proof tests of the mutual position of assemblies and sub-assemblies of wagons that are in relative displacement are significant in developing new types of railway vehicles and especially in the application of non-standard solutions. In the case of standard types of wagons and standard solutions, compliance with the recommended geometric dimensions and parameters of the vehicle should guarantee that even in extreme positions there will be no irregular contact between moving parts of the rail vehicle. This is especially important if it is necessary to place some elements or parts of the wagon’s equipment in the zone of wheelsets and in the zone of the connection between the bogies and the car body. This check can be carried out using graphic-analytical methods, according to the methodology given in the relevant EN standards, ORE reports, and AVV publications, and the limit values of the angular and translational coordinates of the moving parts. Verification of these calculations and verification of the derived state can be done by simulating these movements on the vehicle prototype itself or using a mock-up. This paper presents limit values and proof tests, for checking the mutual position of the running gear and the vehicle car body of a tank wagon car type Zacns. The test was performed using a transfer table for simulating the rotation of bogies relative to the car body in the horizontal plane and by using pads placed under wheels for simulating rotation in the vertical plane. The check was performed by visual inspection and by distance measurements.
PB  - Faculty of Mechanical and Civil Engineering in Kraljevo
C3  - XI INTERNATIONAL TRIENNIAL CONFERENCE HEAVY MACHINERY - HM2023, June 21- June 24, 2023.
T1  - Proof tests of geometric-kinematic calculations of railway vehicles
EP  - B.6
SP  - B.1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7284
ER  - 
@conference{
author = "Milković, Dragan and Simić, Goran and Lučanin, Vojkan and Radulović, Saša and Kostić Miličić, Aleksandra",
year = "2023",
abstract = "Geometric-kinematic calculations and experimental proof tests of the mutual position of assemblies and sub-assemblies of wagons that are in relative displacement are significant in developing new types of railway vehicles and especially in the application of non-standard solutions. In the case of standard types of wagons and standard solutions, compliance with the recommended geometric dimensions and parameters of the vehicle should guarantee that even in extreme positions there will be no irregular contact between moving parts of the rail vehicle. This is especially important if it is necessary to place some elements or parts of the wagon’s equipment in the zone of wheelsets and in the zone of the connection between the bogies and the car body. This check can be carried out using graphic-analytical methods, according to the methodology given in the relevant EN standards, ORE reports, and AVV publications, and the limit values of the angular and translational coordinates of the moving parts. Verification of these calculations and verification of the derived state can be done by simulating these movements on the vehicle prototype itself or using a mock-up. This paper presents limit values and proof tests, for checking the mutual position of the running gear and the vehicle car body of a tank wagon car type Zacns. The test was performed using a transfer table for simulating the rotation of bogies relative to the car body in the horizontal plane and by using pads placed under wheels for simulating rotation in the vertical plane. The check was performed by visual inspection and by distance measurements.",
publisher = "Faculty of Mechanical and Civil Engineering in Kraljevo",
journal = "XI INTERNATIONAL TRIENNIAL CONFERENCE HEAVY MACHINERY - HM2023, June 21- June 24, 2023.",
title = "Proof tests of geometric-kinematic calculations of railway vehicles",
pages = "B.6-B.1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7284"
}
Milković, D., Simić, G., Lučanin, V., Radulović, S.,& Kostić Miličić, A.. (2023). Proof tests of geometric-kinematic calculations of railway vehicles. in XI INTERNATIONAL TRIENNIAL CONFERENCE HEAVY MACHINERY - HM2023, June 21- June 24, 2023.
Faculty of Mechanical and Civil Engineering in Kraljevo., B.1-B.6.
https://hdl.handle.net/21.15107/rcub_machinery_7284
Milković D, Simić G, Lučanin V, Radulović S, Kostić Miličić A. Proof tests of geometric-kinematic calculations of railway vehicles. in XI INTERNATIONAL TRIENNIAL CONFERENCE HEAVY MACHINERY - HM2023, June 21- June 24, 2023.. 2023;:B.1-B.6.
https://hdl.handle.net/21.15107/rcub_machinery_7284 .
Milković, Dragan, Simić, Goran, Lučanin, Vojkan, Radulović, Saša, Kostić Miličić, Aleksandra, "Proof tests of geometric-kinematic calculations of railway vehicles" in XI INTERNATIONAL TRIENNIAL CONFERENCE HEAVY MACHINERY - HM2023, June 21- June 24, 2023. (2023):B.1-B.6,
https://hdl.handle.net/21.15107/rcub_machinery_7284 .

Experimental approach to assessment of safety against derailment of freight wagons

Milković, Dragan; Simić, Goran; Radulović, Saša; Lučanin, Vojkan; Kostić, Aleksandra

(Innovation Center of Faculty of Mechanical Engineering, Belgrade, 2022)

TY  - CONF
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Radulović, Saša
AU  - Lučanin, Vojkan
AU  - Kostić, Aleksandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4191
AB  - The paper presents an analysis of possible causes of damage to the tread of wheels and cracking of brake blocks of heavy-duty motor tower car VMT 980 C-GR. In order to determine the possible causes, a series of tests were done to check all the influences that led to the occurrence of these damages. The analysis included checking the regularity of the brake operation, non-destructive testing of the tread damage, and visual inspection of the brake blocks. The correctness of the brake operation was checked by stationary brake tests. The examination of the damage to the tread of the wheels was performed by non-destructive methods, using means for detecting microcracks and measuring the hardness. The results of the conducted tests indicate that the characteristics of the brake system are within the designed limits and are not the cause of damage to the wheels and the brake blocks. The measured values of hardness on the side and on the read are higher than the minimum required for test samples according to EN 12362. The wheels are made of ER7 steel, which is used as a standard for railway wheels, with a chemical composition within the prescribed limits. Further analysis showed that significant surface damage to the brake blocks is a consequence of previous damage to the tread surface of the wheels. Visual inspection of the wheels showed flaking and cracking, indicating contact fatigue and the presence of thermal stresses as the most likely causes of brake blocks and wheel damage.
PB  - Innovation Center of Faculty of Mechanical Engineering, Belgrade
C3  - The Book of Abstracts : International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2022
T1  - Experimental approach to assessment of safety against derailment of freight wagons
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4191
ER  - 
@conference{
author = "Milković, Dragan and Simić, Goran and Radulović, Saša and Lučanin, Vojkan and Kostić, Aleksandra",
year = "2022",
abstract = "The paper presents an analysis of possible causes of damage to the tread of wheels and cracking of brake blocks of heavy-duty motor tower car VMT 980 C-GR. In order to determine the possible causes, a series of tests were done to check all the influences that led to the occurrence of these damages. The analysis included checking the regularity of the brake operation, non-destructive testing of the tread damage, and visual inspection of the brake blocks. The correctness of the brake operation was checked by stationary brake tests. The examination of the damage to the tread of the wheels was performed by non-destructive methods, using means for detecting microcracks and measuring the hardness. The results of the conducted tests indicate that the characteristics of the brake system are within the designed limits and are not the cause of damage to the wheels and the brake blocks. The measured values of hardness on the side and on the read are higher than the minimum required for test samples according to EN 12362. The wheels are made of ER7 steel, which is used as a standard for railway wheels, with a chemical composition within the prescribed limits. Further analysis showed that significant surface damage to the brake blocks is a consequence of previous damage to the tread surface of the wheels. Visual inspection of the wheels showed flaking and cracking, indicating contact fatigue and the presence of thermal stresses as the most likely causes of brake blocks and wheel damage.",
publisher = "Innovation Center of Faculty of Mechanical Engineering, Belgrade",
journal = "The Book of Abstracts : International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2022",
title = "Experimental approach to assessment of safety against derailment of freight wagons",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4191"
}
Milković, D., Simić, G., Radulović, S., Lučanin, V.,& Kostić, A.. (2022). Experimental approach to assessment of safety against derailment of freight wagons. in The Book of Abstracts : International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2022
Innovation Center of Faculty of Mechanical Engineering, Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_4191
Milković D, Simić G, Radulović S, Lučanin V, Kostić A. Experimental approach to assessment of safety against derailment of freight wagons. in The Book of Abstracts : International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4191 .
Milković, Dragan, Simić, Goran, Radulović, Saša, Lučanin, Vojkan, Kostić, Aleksandra, "Experimental approach to assessment of safety against derailment of freight wagons" in The Book of Abstracts : International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4191 .

Experimental approach to assessment of safety against derailment of freight wagons

Milković, Dragan; Simić, Goran; Radulović, Saša; Lučanin, Vojkan; Kostić, Aleksandra

(Springer International Publishing Ag, Cham, 2022)

TY  - CHAP
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Radulović, Saša
AU  - Lučanin, Vojkan
AU  - Kostić, Aleksandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6279
AB  - For many years, methods for assessment the safety against derailment of railway vehicles have been developed and improved. Possible approaches to solve this task are conducting real in-situ measurements or the application of MBS simulations. The goal of both approaches is to reliably determine the lateral Y and vertical Q forces and their Y/Q ratio. The limit values of this ratio, which should not be exceeded, are defined by standards and in technical reports of the European Technical Committees. Based on the complex geometry of the wheel-rail contact and other parameters of the vehicle and the track, this should ensure that derailment will not occur. In the experimental approach or measurement of relevant parameters, in Europe there are several methods defined by the standard EN 14363. All of them are extremely complex and demanding in terms of conditions to be provided and logistics, so in recent times tendencies are to apply simulations. This paper presents the results of the derailment safety tests of several types of freight wagons using method 2 of EN 14363. The application of this method was made possible by the development of an original wayside system for measuring the wheel-rail contact forces and the development of a hydraulic test rig for twisting a complete wagon. The results of these tests show that some freight wagons, although with standard running gears and standard dimensions, have quite high ratio Y/Q forces during curve negotiation.
PB  - Springer International Publishing Ag, Cham
T2  - Experimental Research and Numerical Simulation in Applied Sciences
T1  - Experimental approach to assessment of safety against derailment of freight wagons
EP  - 249
SP  - 233
VL  - 564
DO  - 10.1007/978-3-031-19499-3_13
ER  - 
@inbook{
author = "Milković, Dragan and Simić, Goran and Radulović, Saša and Lučanin, Vojkan and Kostić, Aleksandra",
year = "2022",
abstract = "For many years, methods for assessment the safety against derailment of railway vehicles have been developed and improved. Possible approaches to solve this task are conducting real in-situ measurements or the application of MBS simulations. The goal of both approaches is to reliably determine the lateral Y and vertical Q forces and their Y/Q ratio. The limit values of this ratio, which should not be exceeded, are defined by standards and in technical reports of the European Technical Committees. Based on the complex geometry of the wheel-rail contact and other parameters of the vehicle and the track, this should ensure that derailment will not occur. In the experimental approach or measurement of relevant parameters, in Europe there are several methods defined by the standard EN 14363. All of them are extremely complex and demanding in terms of conditions to be provided and logistics, so in recent times tendencies are to apply simulations. This paper presents the results of the derailment safety tests of several types of freight wagons using method 2 of EN 14363. The application of this method was made possible by the development of an original wayside system for measuring the wheel-rail contact forces and the development of a hydraulic test rig for twisting a complete wagon. The results of these tests show that some freight wagons, although with standard running gears and standard dimensions, have quite high ratio Y/Q forces during curve negotiation.",
publisher = "Springer International Publishing Ag, Cham",
journal = "Experimental Research and Numerical Simulation in Applied Sciences",
booktitle = "Experimental approach to assessment of safety against derailment of freight wagons",
pages = "249-233",
volume = "564",
doi = "10.1007/978-3-031-19499-3_13"
}
Milković, D., Simić, G., Radulović, S., Lučanin, V.,& Kostić, A.. (2022). Experimental approach to assessment of safety against derailment of freight wagons. in Experimental Research and Numerical Simulation in Applied Sciences
Springer International Publishing Ag, Cham., 564, 233-249.
https://doi.org/10.1007/978-3-031-19499-3_13
Milković D, Simić G, Radulović S, Lučanin V, Kostić A. Experimental approach to assessment of safety against derailment of freight wagons. in Experimental Research and Numerical Simulation in Applied Sciences. 2022;564:233-249.
doi:10.1007/978-3-031-19499-3_13 .
Milković, Dragan, Simić, Goran, Radulović, Saša, Lučanin, Vojkan, Kostić, Aleksandra, "Experimental approach to assessment of safety against derailment of freight wagons" in Experimental Research and Numerical Simulation in Applied Sciences, 564 (2022):233-249,
https://doi.org/10.1007/978-3-031-19499-3_13 . .
2

Experimental and numerical determination of the freight wagon buffers characteristics

Milković, Dragan; Kostić, Aleksandra; Radulović, Saša; Simić, Goran; Lučanin, Vojkan

(Niš : Faculty of Mechanical Engineering, 2022)

TY  - CONF
AU  - Milković, Dragan
AU  - Kostić, Aleksandra
AU  - Radulović, Saša
AU  - Simić, Goran
AU  - Lučanin, Vojkan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4208
AB  - Draw-buff gear plays a significant role in the transmission and damping of longitudinal forces generated during accelerating and braking of trains. The role of the buffers is to protect the railway vehicles bearing structure, cargo and passengers from excessive longitudinal impacts. Especially when shunting freight wagons. For that reason, they have built-in elastic-damping elements that absorb shocks and partially convert kinetic energy into heat. This paper analyzes buffers with rubber-metal springs, which are the most often used in the freight cars nowadays. The static and dynamic force-stroke characteristics obtained by measurements on hydraulic press and during buffing impact tests are presented. These results are then compared with calculations using FEM analyses. The analyses included checking of the buffers ability to absorb a sufficient amount
of energy that can be generated during wagon normal operation and in the case of exceptional shunting impacts.
PB  - Niš : Faculty of Mechanical Engineering
C3  - Proceedings : XX Scientific-expert conference on railways RAILCON `22
T1  - Experimental and numerical determination of the freight wagon buffers characteristics
EP  - 16
SP  - 13
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4208
ER  - 
@conference{
author = "Milković, Dragan and Kostić, Aleksandra and Radulović, Saša and Simić, Goran and Lučanin, Vojkan",
year = "2022",
abstract = "Draw-buff gear plays a significant role in the transmission and damping of longitudinal forces generated during accelerating and braking of trains. The role of the buffers is to protect the railway vehicles bearing structure, cargo and passengers from excessive longitudinal impacts. Especially when shunting freight wagons. For that reason, they have built-in elastic-damping elements that absorb shocks and partially convert kinetic energy into heat. This paper analyzes buffers with rubber-metal springs, which are the most often used in the freight cars nowadays. The static and dynamic force-stroke characteristics obtained by measurements on hydraulic press and during buffing impact tests are presented. These results are then compared with calculations using FEM analyses. The analyses included checking of the buffers ability to absorb a sufficient amount
of energy that can be generated during wagon normal operation and in the case of exceptional shunting impacts.",
publisher = "Niš : Faculty of Mechanical Engineering",
journal = "Proceedings : XX Scientific-expert conference on railways RAILCON `22",
title = "Experimental and numerical determination of the freight wagon buffers characteristics",
pages = "16-13",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4208"
}
Milković, D., Kostić, A., Radulović, S., Simić, G.,& Lučanin, V.. (2022). Experimental and numerical determination of the freight wagon buffers characteristics. in Proceedings : XX Scientific-expert conference on railways RAILCON `22
Niš : Faculty of Mechanical Engineering., 13-16.
https://hdl.handle.net/21.15107/rcub_machinery_4208
Milković D, Kostić A, Radulović S, Simić G, Lučanin V. Experimental and numerical determination of the freight wagon buffers characteristics. in Proceedings : XX Scientific-expert conference on railways RAILCON `22. 2022;:13-16.
https://hdl.handle.net/21.15107/rcub_machinery_4208 .
Milković, Dragan, Kostić, Aleksandra, Radulović, Saša, Simić, Goran, Lučanin, Vojkan, "Experimental and numerical determination of the freight wagon buffers characteristics" in Proceedings : XX Scientific-expert conference on railways RAILCON `22 (2022):13-16,
https://hdl.handle.net/21.15107/rcub_machinery_4208 .

Influence of wheel tread surface roughness on the noise emitted by railbound freight vehicles

Milković, Dragan; Radulović, Saša; Simić, Goran; Lučanin, Vojkan; Kostić, Aleksandra

(Niš : Faculty of Mechanical Engineering, 2022)

TY  - CONF
AU  - Milković, Dragan
AU  - Radulović, Saša
AU  - Simić, Goran
AU  - Lučanin, Vojkan
AU  - Kostić, Aleksandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4207
AB  - The increased capacity of freight railway traffic leads to increased noise pollution. The existing regulation TSI NOI defines the maximum noise level allowed to be emitted by railway vehicles. Consequently, the noise tests are mandatory type tests for all new vehicles. Experience from noise tests of different freight wagons have shown that measured noise level depends on many parameters and in most cases is close to the maximum permissible values. Contemporary design of the freight wagons has to be conceived such as to emit as low noise as possible. Accordingly, it is necessary to identify the main influencing sources that affect the noise generation and to find a way to reduce their influence. This paper presents results obtained by measurements of pass-by noise of a freight wagon, with wheels having different wheel tread surface roughness. It appeared that wheel-rail rolling contact as a noise source is very significant and may be critical for assessment of the railbound vehicles.
PB  - Niš : Faculty of Mechanical Engineering
C3  - Proceedings : XX Scientific-expert conference on railways RAILCON `22
T1  - Influence of wheel tread surface roughness on the noise emitted by railbound freight vehicles
EP  - 8
SP  - 5
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4207
ER  - 
@conference{
author = "Milković, Dragan and Radulović, Saša and Simić, Goran and Lučanin, Vojkan and Kostić, Aleksandra",
year = "2022",
abstract = "The increased capacity of freight railway traffic leads to increased noise pollution. The existing regulation TSI NOI defines the maximum noise level allowed to be emitted by railway vehicles. Consequently, the noise tests are mandatory type tests for all new vehicles. Experience from noise tests of different freight wagons have shown that measured noise level depends on many parameters and in most cases is close to the maximum permissible values. Contemporary design of the freight wagons has to be conceived such as to emit as low noise as possible. Accordingly, it is necessary to identify the main influencing sources that affect the noise generation and to find a way to reduce their influence. This paper presents results obtained by measurements of pass-by noise of a freight wagon, with wheels having different wheel tread surface roughness. It appeared that wheel-rail rolling contact as a noise source is very significant and may be critical for assessment of the railbound vehicles.",
publisher = "Niš : Faculty of Mechanical Engineering",
journal = "Proceedings : XX Scientific-expert conference on railways RAILCON `22",
title = "Influence of wheel tread surface roughness on the noise emitted by railbound freight vehicles",
pages = "8-5",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4207"
}
Milković, D., Radulović, S., Simić, G., Lučanin, V.,& Kostić, A.. (2022). Influence of wheel tread surface roughness on the noise emitted by railbound freight vehicles. in Proceedings : XX Scientific-expert conference on railways RAILCON `22
Niš : Faculty of Mechanical Engineering., 5-8.
https://hdl.handle.net/21.15107/rcub_machinery_4207
Milković D, Radulović S, Simić G, Lučanin V, Kostić A. Influence of wheel tread surface roughness on the noise emitted by railbound freight vehicles. in Proceedings : XX Scientific-expert conference on railways RAILCON `22. 2022;:5-8.
https://hdl.handle.net/21.15107/rcub_machinery_4207 .
Milković, Dragan, Radulović, Saša, Simić, Goran, Lučanin, Vojkan, Kostić, Aleksandra, "Influence of wheel tread surface roughness on the noise emitted by railbound freight vehicles" in Proceedings : XX Scientific-expert conference on railways RAILCON `22 (2022):5-8,
https://hdl.handle.net/21.15107/rcub_machinery_4207 .

Influence of the Head Wind on Determining Braking Performance of Zacns Tank Wagon

Radulović, Saša; Milković, Dragan; Raković, Milan; Simić, Goran; Kostić, Aleksandra

(Budapest Tech Polytechnical Institution, 2022)

TY  - JOUR
AU  - Radulović, Saša
AU  - Milković, Dragan
AU  - Raković, Milan
AU  - Simić, Goran
AU  - Kostić, Aleksandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3828
AB  - From the aspect of safety, brakes of rail vehicles are an extremely important system on the vehicle. Braking performance affects the normal functioning of vehicles and interoperability of rail vehicles in classic railway train compositions. All trains, classic and different type of motor trains must conform with the available stopping distances, which are predefined by the railway signalling, i.e. control length of a signal and depends on the maximum allowable speed for which the track section is designed. Apart from that, in classic wagons, which are combined and participate in the formation of different train compositions, mutual compatibility must be ensured from the aspect of used braking equipment and connection subassemblies, but even more important, braking performance of all wagons in the train has to be uniform within certain tolerances. This prevents weaker braked wagons from running into stronger braked ones, which can cause longitudinal jerks and may in extremes lead to a train rupture. Stopping distance during brake application depends on train braking performances, longitudinal running resistance and presence of wind and its direction. This paper deals with the influence of wind conditions on the results of slip brake tests and the estimation of a single vehicle's braking performance. Based on experimental measurements, simulations using CFD and comparison with the obtained results, this paper proposes a possibility to extract air drag resistance and wind force from the total resistance force. Presented methodology and obtained results may serve for further simulations of aerodynamic characteristics apart from braking performance, such as vehicle running resistance, energy consumption, etc. and for optimization of the wagon shape and design.
PB  - Budapest Tech Polytechnical Institution
T2  - Acta Polytechnica Hungarica
T1  - Influence of the Head Wind on Determining Braking Performance of Zacns Tank Wagon
EP  - 98
IS  - 6
SP  - 81
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3828
ER  - 
@article{
author = "Radulović, Saša and Milković, Dragan and Raković, Milan and Simić, Goran and Kostić, Aleksandra",
year = "2022",
abstract = "From the aspect of safety, brakes of rail vehicles are an extremely important system on the vehicle. Braking performance affects the normal functioning of vehicles and interoperability of rail vehicles in classic railway train compositions. All trains, classic and different type of motor trains must conform with the available stopping distances, which are predefined by the railway signalling, i.e. control length of a signal and depends on the maximum allowable speed for which the track section is designed. Apart from that, in classic wagons, which are combined and participate in the formation of different train compositions, mutual compatibility must be ensured from the aspect of used braking equipment and connection subassemblies, but even more important, braking performance of all wagons in the train has to be uniform within certain tolerances. This prevents weaker braked wagons from running into stronger braked ones, which can cause longitudinal jerks and may in extremes lead to a train rupture. Stopping distance during brake application depends on train braking performances, longitudinal running resistance and presence of wind and its direction. This paper deals with the influence of wind conditions on the results of slip brake tests and the estimation of a single vehicle's braking performance. Based on experimental measurements, simulations using CFD and comparison with the obtained results, this paper proposes a possibility to extract air drag resistance and wind force from the total resistance force. Presented methodology and obtained results may serve for further simulations of aerodynamic characteristics apart from braking performance, such as vehicle running resistance, energy consumption, etc. and for optimization of the wagon shape and design.",
publisher = "Budapest Tech Polytechnical Institution",
journal = "Acta Polytechnica Hungarica",
title = "Influence of the Head Wind on Determining Braking Performance of Zacns Tank Wagon",
pages = "98-81",
number = "6",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3828"
}
Radulović, S., Milković, D., Raković, M., Simić, G.,& Kostić, A.. (2022). Influence of the Head Wind on Determining Braking Performance of Zacns Tank Wagon. in Acta Polytechnica Hungarica
Budapest Tech Polytechnical Institution., 19(6), 81-98.
https://hdl.handle.net/21.15107/rcub_machinery_3828
Radulović S, Milković D, Raković M, Simić G, Kostić A. Influence of the Head Wind on Determining Braking Performance of Zacns Tank Wagon. in Acta Polytechnica Hungarica. 2022;19(6):81-98.
https://hdl.handle.net/21.15107/rcub_machinery_3828 .
Radulović, Saša, Milković, Dragan, Raković, Milan, Simić, Goran, Kostić, Aleksandra, "Influence of the Head Wind on Determining Braking Performance of Zacns Tank Wagon" in Acta Polytechnica Hungarica, 19, no. 6 (2022):81-98,
https://hdl.handle.net/21.15107/rcub_machinery_3828 .
3

Specific aspects of the rail vehicle pass-by noise measurement

Simić, Goran; Radulović, Saša; Lučanin, Vojkan

(University of Niš, Faculty of Mechanical Engineering, 2020)

TY  - CONF
AU  - Simić, Goran
AU  - Radulović, Saša
AU  - Lučanin, Vojkan
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4221
AB  - Actual European legislative (NOI TSI) urges for quitter rail vehicles requiring
obligatory assessment of noise emitted by rail vehicles within vehicle approval procedure. After survey of different rail vehicle noise emission scenarios, this paper discusses more in detail specifics of the pass-by noise measurement. The requirements of the measurement procedure from applicable standards are presented and discussed on the example of the tank wagon pass-by tests.
Under several parameters that can influence measurement, for vehicle approval is important to measure and check if the most influencing parameters related to track lies in specified limits. If so, the measured noise emission level mainly represents the vehicle contribution and allows comparability to noise emission measurement of other vehicles. Two main track characteristics have to be measured and assessed: acoustical rail roughness and track decay rate. In the paper are presented both measurements that are more demanding than the noise emission measurement itself.
PB  - University of Niš, Faculty of Mechanical Engineering
C3  - Proceedings - XIX Scientific-expert conference on railways RAILCON `20
T1  - Specific aspects of the rail vehicle pass-by noise measurement
EP  - 20
SP  - 17
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4221
ER  - 
@conference{
author = "Simić, Goran and Radulović, Saša and Lučanin, Vojkan",
year = "2020",
abstract = "Actual European legislative (NOI TSI) urges for quitter rail vehicles requiring
obligatory assessment of noise emitted by rail vehicles within vehicle approval procedure. After survey of different rail vehicle noise emission scenarios, this paper discusses more in detail specifics of the pass-by noise measurement. The requirements of the measurement procedure from applicable standards are presented and discussed on the example of the tank wagon pass-by tests.
Under several parameters that can influence measurement, for vehicle approval is important to measure and check if the most influencing parameters related to track lies in specified limits. If so, the measured noise emission level mainly represents the vehicle contribution and allows comparability to noise emission measurement of other vehicles. Two main track characteristics have to be measured and assessed: acoustical rail roughness and track decay rate. In the paper are presented both measurements that are more demanding than the noise emission measurement itself.",
publisher = "University of Niš, Faculty of Mechanical Engineering",
journal = "Proceedings - XIX Scientific-expert conference on railways RAILCON `20",
title = "Specific aspects of the rail vehicle pass-by noise measurement",
pages = "20-17",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4221"
}
Simić, G., Radulović, S.,& Lučanin, V.. (2020). Specific aspects of the rail vehicle pass-by noise measurement. in Proceedings - XIX Scientific-expert conference on railways RAILCON `20
University of Niš, Faculty of Mechanical Engineering., 17-20.
https://hdl.handle.net/21.15107/rcub_machinery_4221
Simić G, Radulović S, Lučanin V. Specific aspects of the rail vehicle pass-by noise measurement. in Proceedings - XIX Scientific-expert conference on railways RAILCON `20. 2020;:17-20.
https://hdl.handle.net/21.15107/rcub_machinery_4221 .
Simić, Goran, Radulović, Saša, Lučanin, Vojkan, "Specific aspects of the rail vehicle pass-by noise measurement" in Proceedings - XIX Scientific-expert conference on railways RAILCON `20 (2020):17-20,
https://hdl.handle.net/21.15107/rcub_machinery_4221 .

Influence of head wind on the braking distance of single railway vehicle

Milković, Dragan; Radulović, Saša; Simić, Goran; Tanasković, Jovan

(University of Niš, Faculty of Mechanical Engineering, 2020)

TY  - CONF
AU  - Milković, Dragan
AU  - Radulović, Saša
AU  - Simić, Goran
AU  - Tanasković, Jovan
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4220
AB  - Train stopping distance during brake application is influenced by the brake system performance, longitudinal running resistance and presence of wind and its direction. This paper deals with influence of the wind conditions on the results of slip brake tests. The influence is more expressed in the case of single vehicles tests and less expressed for the trains. The tests with and without presence of head wind were performed on the tank car type Zacns. Depending on wind
speed, measured stopping distances may differ significantly. Opposite from head wind, tail wind increases stopping distance and should be considered when calculating safety margin and setting service train speed depending on the wind conditions. The results may also serve for further analyses of aerodynamic characteristics of railway vehicles and for verification of numerical simulations.
PB  - University of Niš, Faculty of Mechanical Engineering
C3  - Proceedings - XIX Scientific-expert conference on railways RAILCON `20
T1  - Influence of head wind on the braking distance of single railway vehicle
EP  - 16
SP  - 13
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4220
ER  - 
@conference{
author = "Milković, Dragan and Radulović, Saša and Simić, Goran and Tanasković, Jovan",
year = "2020",
abstract = "Train stopping distance during brake application is influenced by the brake system performance, longitudinal running resistance and presence of wind and its direction. This paper deals with influence of the wind conditions on the results of slip brake tests. The influence is more expressed in the case of single vehicles tests and less expressed for the trains. The tests with and without presence of head wind were performed on the tank car type Zacns. Depending on wind
speed, measured stopping distances may differ significantly. Opposite from head wind, tail wind increases stopping distance and should be considered when calculating safety margin and setting service train speed depending on the wind conditions. The results may also serve for further analyses of aerodynamic characteristics of railway vehicles and for verification of numerical simulations.",
publisher = "University of Niš, Faculty of Mechanical Engineering",
journal = "Proceedings - XIX Scientific-expert conference on railways RAILCON `20",
title = "Influence of head wind on the braking distance of single railway vehicle",
pages = "16-13",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4220"
}
Milković, D., Radulović, S., Simić, G.,& Tanasković, J.. (2020). Influence of head wind on the braking distance of single railway vehicle. in Proceedings - XIX Scientific-expert conference on railways RAILCON `20
University of Niš, Faculty of Mechanical Engineering., 13-16.
https://hdl.handle.net/21.15107/rcub_machinery_4220
Milković D, Radulović S, Simić G, Tanasković J. Influence of head wind on the braking distance of single railway vehicle. in Proceedings - XIX Scientific-expert conference on railways RAILCON `20. 2020;:13-16.
https://hdl.handle.net/21.15107/rcub_machinery_4220 .
Milković, Dragan, Radulović, Saša, Simić, Goran, Tanasković, Jovan, "Influence of head wind on the braking distance of single railway vehicle" in Proceedings - XIX Scientific-expert conference on railways RAILCON `20 (2020):13-16,
https://hdl.handle.net/21.15107/rcub_machinery_4220 .

Comparative analysis of the results of theoretical and experimental studies of freight wagon Sdggmrss-twin

Stoilov, V.; Simić, Goran; Purgić, S.; Milković, Dragan; Slavchev, S.; Radulović, Saša; Maznichki, V.

(Institute of Physics Publishing, 2019)

TY  - CONF
AU  - Stoilov, V.
AU  - Simić, Goran
AU  - Purgić, S.
AU  - Milković, Dragan
AU  - Slavchev, S.
AU  - Radulović, Saša
AU  - Maznichki, V.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3170
AB  - This paper presents a comparative analysis based on the results from static strength calculation of wagon body, series Sdggmrss-twin, and on the results from the real wagon test. The verification of results from calculations and tests and their comparison was mandatory for client's commissioning of the wagon by notified body. Calculations based on the finite elements method were carried out in the Department of Railway Engineering at Technical University of Sofia. Experimental studies on real wagon construction were conducted at the facilities of Bulgarian National Transport Research Institute by testing team from Laboratory of rail vehicles at University of Belgrade. It was found that the obtained static stress results are similar, which proves that the proposed models are appropriate and they can help to solve a wide range of issues, for example those related to lightweight design of railway vehicles.
PB  - Institute of Physics Publishing
C3  - IOP Conference Series: Materials Science and Engineering
T1  - Comparative analysis of the results of theoretical and experimental studies of freight wagon Sdggmrss-twin
IS  - 1
VL  - 664
DO  - 10.1088/1757-899X/664/1/012026
ER  - 
@conference{
author = "Stoilov, V. and Simić, Goran and Purgić, S. and Milković, Dragan and Slavchev, S. and Radulović, Saša and Maznichki, V.",
year = "2019",
abstract = "This paper presents a comparative analysis based on the results from static strength calculation of wagon body, series Sdggmrss-twin, and on the results from the real wagon test. The verification of results from calculations and tests and their comparison was mandatory for client's commissioning of the wagon by notified body. Calculations based on the finite elements method were carried out in the Department of Railway Engineering at Technical University of Sofia. Experimental studies on real wagon construction were conducted at the facilities of Bulgarian National Transport Research Institute by testing team from Laboratory of rail vehicles at University of Belgrade. It was found that the obtained static stress results are similar, which proves that the proposed models are appropriate and they can help to solve a wide range of issues, for example those related to lightweight design of railway vehicles.",
publisher = "Institute of Physics Publishing",
journal = "IOP Conference Series: Materials Science and Engineering",
title = "Comparative analysis of the results of theoretical and experimental studies of freight wagon Sdggmrss-twin",
number = "1",
volume = "664",
doi = "10.1088/1757-899X/664/1/012026"
}
Stoilov, V., Simić, G., Purgić, S., Milković, D., Slavchev, S., Radulović, S.,& Maznichki, V.. (2019). Comparative analysis of the results of theoretical and experimental studies of freight wagon Sdggmrss-twin. in IOP Conference Series: Materials Science and Engineering
Institute of Physics Publishing., 664(1).
https://doi.org/10.1088/1757-899X/664/1/012026
Stoilov V, Simić G, Purgić S, Milković D, Slavchev S, Radulović S, Maznichki V. Comparative analysis of the results of theoretical and experimental studies of freight wagon Sdggmrss-twin. in IOP Conference Series: Materials Science and Engineering. 2019;664(1).
doi:10.1088/1757-899X/664/1/012026 .
Stoilov, V., Simić, Goran, Purgić, S., Milković, Dragan, Slavchev, S., Radulović, Saša, Maznichki, V., "Comparative analysis of the results of theoretical and experimental studies of freight wagon Sdggmrss-twin" in IOP Conference Series: Materials Science and Engineering, 664, no. 1 (2019),
https://doi.org/10.1088/1757-899X/664/1/012026 . .
10
15

Assesment of the fatigue behavior of repaired aluminium carbody structure

Simić, Goran; Milković, Dragan; Lučanin, Vojkan; Tanasković, Jovan; Poznanović, Milan

(Niš : Faculty of Mechanical Engineering, 2018)

TY  - CONF
AU  - Simić, Goran
AU  - Milković, Dragan
AU  - Lučanin, Vojkan
AU  - Tanasković, Jovan
AU  - Poznanović, Milan
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4277
AB  - Aluminum carbody structures vs. steel structures have an increasing share in rail vehicle passenger fleet. New trams for Belgrade city transport with aluminum carbody structure after approximately three years of service, suffered from cracks. The first repair made by manufacturer was only partially successful. Two years after repair some cracks reappeared. This paper deals with some specificity of the aluminum structures repair process. The issue of the aluminum structures fatigue is compared with the fatigue of common carbody steel structures. Stress measurements in the repaired welding zone after second repair and reinforcement are presented. The test was performed with fully loaded tram under typical service conditions. Assessment of the future fatigue behavior is made based on the analysis of measured data.
PB  - Niš : Faculty of Mechanical Engineering
C3  - Proceedings : XVIII Scinetific-expert conference on railways RAILCON '18
T1  - Assesment of the fatigue behavior of repaired aluminium carbody structure
EP  - 8
SP  - 5
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4277
ER  - 
@conference{
author = "Simić, Goran and Milković, Dragan and Lučanin, Vojkan and Tanasković, Jovan and Poznanović, Milan",
year = "2018",
abstract = "Aluminum carbody structures vs. steel structures have an increasing share in rail vehicle passenger fleet. New trams for Belgrade city transport with aluminum carbody structure after approximately three years of service, suffered from cracks. The first repair made by manufacturer was only partially successful. Two years after repair some cracks reappeared. This paper deals with some specificity of the aluminum structures repair process. The issue of the aluminum structures fatigue is compared with the fatigue of common carbody steel structures. Stress measurements in the repaired welding zone after second repair and reinforcement are presented. The test was performed with fully loaded tram under typical service conditions. Assessment of the future fatigue behavior is made based on the analysis of measured data.",
publisher = "Niš : Faculty of Mechanical Engineering",
journal = "Proceedings : XVIII Scinetific-expert conference on railways RAILCON '18",
title = "Assesment of the fatigue behavior of repaired aluminium carbody structure",
pages = "8-5",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4277"
}
Simić, G., Milković, D., Lučanin, V., Tanasković, J.,& Poznanović, M.. (2018). Assesment of the fatigue behavior of repaired aluminium carbody structure. in Proceedings : XVIII Scinetific-expert conference on railways RAILCON '18
Niš : Faculty of Mechanical Engineering., 5-8.
https://hdl.handle.net/21.15107/rcub_machinery_4277
Simić G, Milković D, Lučanin V, Tanasković J, Poznanović M. Assesment of the fatigue behavior of repaired aluminium carbody structure. in Proceedings : XVIII Scinetific-expert conference on railways RAILCON '18. 2018;:5-8.
https://hdl.handle.net/21.15107/rcub_machinery_4277 .
Simić, Goran, Milković, Dragan, Lučanin, Vojkan, Tanasković, Jovan, Poznanović, Milan, "Assesment of the fatigue behavior of repaired aluminium carbody structure" in Proceedings : XVIII Scinetific-expert conference on railways RAILCON '18 (2018):5-8,
https://hdl.handle.net/21.15107/rcub_machinery_4277 .

Comparation of brake performance of freight vagons with classic brake and compact freight car brake

Radulović, Saša; Milković, Dragan; Simić, Goran; Vukšić Popović, Marija

(Niš : Faculty of Mechanical Engineering, 2018)

TY  - CONF
AU  - Radulović, Saša
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Vukšić Popović, Marija
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4232
AB  - Contemporary design of the freight wagons requires lightweight and compact design of all subassemblies and components (e.g. bogies, brake systems etc.). Because of that several manufacturers of railway brake systems have developed a compact brake system having all major components located within bogie. This system despite the more complex construction than standard have more advantages (lower mass, reduced air consumption, higher efficiency of brake rigging etc.) This paper presents results and conclusions obtained by testing of two freight wagons of the same type equipped with classic brake system and compact freight car brake system (CFCB). The testing included brake performance test i.e. stationary test and slip brake test.
PB  - Niš : Faculty of Mechanical Engineering
C3  - Proceedings / XVIII Scientific-Expert Conference on Railways - RAILCON '18, October 11-12, 2018, Niš
T1  - Comparation of brake performance of freight vagons with classic brake and compact freight car brake
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4232
ER  - 
@conference{
author = "Radulović, Saša and Milković, Dragan and Simić, Goran and Vukšić Popović, Marija",
year = "2018",
abstract = "Contemporary design of the freight wagons requires lightweight and compact design of all subassemblies and components (e.g. bogies, brake systems etc.). Because of that several manufacturers of railway brake systems have developed a compact brake system having all major components located within bogie. This system despite the more complex construction than standard have more advantages (lower mass, reduced air consumption, higher efficiency of brake rigging etc.) This paper presents results and conclusions obtained by testing of two freight wagons of the same type equipped with classic brake system and compact freight car brake system (CFCB). The testing included brake performance test i.e. stationary test and slip brake test.",
publisher = "Niš : Faculty of Mechanical Engineering",
journal = "Proceedings / XVIII Scientific-Expert Conference on Railways - RAILCON '18, October 11-12, 2018, Niš",
title = "Comparation of brake performance of freight vagons with classic brake and compact freight car brake",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4232"
}
Radulović, S., Milković, D., Simić, G.,& Vukšić Popović, M.. (2018). Comparation of brake performance of freight vagons with classic brake and compact freight car brake. in Proceedings / XVIII Scientific-Expert Conference on Railways - RAILCON '18, October 11-12, 2018, Niš
Niš : Faculty of Mechanical Engineering..
https://hdl.handle.net/21.15107/rcub_machinery_4232
Radulović S, Milković D, Simić G, Vukšić Popović M. Comparation of brake performance of freight vagons with classic brake and compact freight car brake. in Proceedings / XVIII Scientific-Expert Conference on Railways - RAILCON '18, October 11-12, 2018, Niš. 2018;.
https://hdl.handle.net/21.15107/rcub_machinery_4232 .
Radulović, Saša, Milković, Dragan, Simić, Goran, Vukšić Popović, Marija, "Comparation of brake performance of freight vagons with classic brake and compact freight car brake" in Proceedings / XVIII Scientific-Expert Conference on Railways - RAILCON '18, October 11-12, 2018, Niš (2018),
https://hdl.handle.net/21.15107/rcub_machinery_4232 .

Merna nesigurnost rezultata merenja ugla naletanja točka na šinu pomoću laserskog sistema postavljenog na koloseku

Milković, Dragan; Simić, Goran; Tanasković, Jovan; Lučanin, Vojkan; Radulović, Saša

(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2017)

TY  - JOUR
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Tanasković, Jovan
AU  - Lučanin, Vojkan
AU  - Radulović, Saša
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2596
AB  - Ugao naletanja točka na šinu je značajan parametar dodira točak-šina. Zajedno sa silama koje nastaju pri tom dodiru, služi za ocenu dinamičkog ponašanja šinskog vozila pri prolasku kroz krivinu. U ovom radu je analizirana merna nesigurnost rezultata merenja specijalnim laserskim sistemom konstruisanim za merenje ugla naletanja točka na šinu, ističući značaj teorijskog pristupa pri izboru odgovarajućeg mernog principa i pri identifikaciji svih uticajnih parametara. Razmatran je i uticaj pravilnog postavljanja i pozicioniranja sistema na koloseku na rezultate merenja. Kako bi se ocenio kvalitet sprovedene analize, u radu su prikazani neki od rezultata merenja ovim uređajem i njihovo poređenje sa rezultatima dobijenim simulacijom, primenom specijalizovanog softverskog paketa VAMPIRE Pro. PR Projekat Ministarstva nauke Republike Srbije, br. TR 35006 i br. TR 35045.
AB  - The angle of attack is an important wheel-rail contact parameter. Together with wheel-rail contact forces it serves for estimation of the rail vehicle curving performances. This paper analyses measurement uncertainty of the specially designed laser system for measurements of the wheel-rail angle of attack, with emphasis on the importance of the theoretical approach for selection of the appropriate measuring principle and for identifying all influential factors. The influence of the correct installation of the system on results is also considered. In order to evaluate quality of the analysis, some measurement results are presented and compared with the results of multibody system (MBS) simulation using specialized computer package VAMPIRE Pro.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Merna nesigurnost rezultata merenja ugla naletanja točka na šinu pomoću laserskog sistema postavljenog na koloseku
T1  - Uncertainty of the wheel-rail angle of attack measurements using laser based wayside system
EP  - 76
IS  - 1
SP  - 69
VL  - 45
DO  - 10.5937/fmet1701069M
ER  - 
@article{
author = "Milković, Dragan and Simić, Goran and Tanasković, Jovan and Lučanin, Vojkan and Radulović, Saša",
year = "2017",
abstract = "Ugao naletanja točka na šinu je značajan parametar dodira točak-šina. Zajedno sa silama koje nastaju pri tom dodiru, služi za ocenu dinamičkog ponašanja šinskog vozila pri prolasku kroz krivinu. U ovom radu je analizirana merna nesigurnost rezultata merenja specijalnim laserskim sistemom konstruisanim za merenje ugla naletanja točka na šinu, ističući značaj teorijskog pristupa pri izboru odgovarajućeg mernog principa i pri identifikaciji svih uticajnih parametara. Razmatran je i uticaj pravilnog postavljanja i pozicioniranja sistema na koloseku na rezultate merenja. Kako bi se ocenio kvalitet sprovedene analize, u radu su prikazani neki od rezultata merenja ovim uređajem i njihovo poređenje sa rezultatima dobijenim simulacijom, primenom specijalizovanog softverskog paketa VAMPIRE Pro. PR Projekat Ministarstva nauke Republike Srbije, br. TR 35006 i br. TR 35045., The angle of attack is an important wheel-rail contact parameter. Together with wheel-rail contact forces it serves for estimation of the rail vehicle curving performances. This paper analyses measurement uncertainty of the specially designed laser system for measurements of the wheel-rail angle of attack, with emphasis on the importance of the theoretical approach for selection of the appropriate measuring principle and for identifying all influential factors. The influence of the correct installation of the system on results is also considered. In order to evaluate quality of the analysis, some measurement results are presented and compared with the results of multibody system (MBS) simulation using specialized computer package VAMPIRE Pro.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Merna nesigurnost rezultata merenja ugla naletanja točka na šinu pomoću laserskog sistema postavljenog na koloseku, Uncertainty of the wheel-rail angle of attack measurements using laser based wayside system",
pages = "76-69",
number = "1",
volume = "45",
doi = "10.5937/fmet1701069M"
}
Milković, D., Simić, G., Tanasković, J., Lučanin, V.,& Radulović, S.. (2017). Merna nesigurnost rezultata merenja ugla naletanja točka na šinu pomoću laserskog sistema postavljenog na koloseku. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 45(1), 69-76.
https://doi.org/10.5937/fmet1701069M
Milković D, Simić G, Tanasković J, Lučanin V, Radulović S. Merna nesigurnost rezultata merenja ugla naletanja točka na šinu pomoću laserskog sistema postavljenog na koloseku. in FME Transactions. 2017;45(1):69-76.
doi:10.5937/fmet1701069M .
Milković, Dragan, Simić, Goran, Tanasković, Jovan, Lučanin, Vojkan, Radulović, Saša, "Merna nesigurnost rezultata merenja ugla naletanja točka na šinu pomoću laserskog sistema postavljenog na koloseku" in FME Transactions, 45, no. 1 (2017):69-76,
https://doi.org/10.5937/fmet1701069M . .
1
1

Influence of measurement method and data processing on the results of brake performance test

Radulović, Saša; Simić, Goran; Milković, Dragan; Lučanin, Vojkan

(Niš : Faculty of Mechanical Engineering, 2016)

TY  - CONF
AU  - Radulović, Saša
AU  - Simić, Goran
AU  - Milković, Dragan
AU  - Lučanin, Vojkan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4291
AB  - In order to determine the brake weight of rail vehicles, brake perfomance test has to be perfomed. This test shall be conducted in accordance with the UIC 544-1. This regulation defines the necessary conditions and required quantities that shall be measured (speed, stopping distances, pressure etc.), but does not specify measuring method and all details about data processing. This paper presents possible influences on the results when using different speed measurement techniques or data processing details.
PB  - Niš : Faculty of Mechanical Engineering
C3  - Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš
T1  - Influence of measurement method and data processing on the results of brake performance test
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4291
ER  - 
@conference{
author = "Radulović, Saša and Simić, Goran and Milković, Dragan and Lučanin, Vojkan",
year = "2016",
abstract = "In order to determine the brake weight of rail vehicles, brake perfomance test has to be perfomed. This test shall be conducted in accordance with the UIC 544-1. This regulation defines the necessary conditions and required quantities that shall be measured (speed, stopping distances, pressure etc.), but does not specify measuring method and all details about data processing. This paper presents possible influences on the results when using different speed measurement techniques or data processing details.",
publisher = "Niš : Faculty of Mechanical Engineering",
journal = "Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš",
title = "Influence of measurement method and data processing on the results of brake performance test",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4291"
}
Radulović, S., Simić, G., Milković, D.,& Lučanin, V.. (2016). Influence of measurement method and data processing on the results of brake performance test. in Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš
Niš : Faculty of Mechanical Engineering..
https://hdl.handle.net/21.15107/rcub_machinery_4291
Radulović S, Simić G, Milković D, Lučanin V. Influence of measurement method and data processing on the results of brake performance test. in Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš. 2016;.
https://hdl.handle.net/21.15107/rcub_machinery_4291 .
Radulović, Saša, Simić, Goran, Milković, Dragan, Lučanin, Vojkan, "Influence of measurement method and data processing on the results of brake performance test" in Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš (2016),
https://hdl.handle.net/21.15107/rcub_machinery_4291 .

Design specificity of Eams-z self-propelled wagon

Radulović, Saša; Simić, Goran; Vidović, Dražen; Golubović, Snežana

(Niš : Faculty of Mechanical Engineering, 2016)

TY  - CONF
AU  - Radulović, Saša
AU  - Simić, Goran
AU  - Vidović, Dražen
AU  - Golubović, Snežana
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4292
AB  - Self-propelled wagon Eams-Z inteded for bulk material transportation provides enhancement in railway infrastructure construction and maintenance. Its main advantage is possibility of manipulation along tracks and construction material discharging without use of locomotive. Thus this car saves energy, human resources, and shortens the time of transportation and unloading. The car has two crates with the possibility of side and frontal inclining using hydraulic cylinders. These cylinders provide controlled and precise unloading of cargo on 3 sides without need of any extra man or machine power. Power pack, consisting of Iveco engine, hydro transmission and two small wheels without flange is  positioned in the middle of the car between the bogies. In the self-propelled regime wheels lower down to rails providing traction force needed for wagon manipulation. This car type requires special attention during design and calculations in order to achieve safe manipulation in all regimes.
PB  - Niš : Faculty of Mechanical Engineering
C3  - Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš
T1  - Design specificity of Eams-z self-propelled wagon
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4292
ER  - 
@conference{
author = "Radulović, Saša and Simić, Goran and Vidović, Dražen and Golubović, Snežana",
year = "2016",
abstract = "Self-propelled wagon Eams-Z inteded for bulk material transportation provides enhancement in railway infrastructure construction and maintenance. Its main advantage is possibility of manipulation along tracks and construction material discharging without use of locomotive. Thus this car saves energy, human resources, and shortens the time of transportation and unloading. The car has two crates with the possibility of side and frontal inclining using hydraulic cylinders. These cylinders provide controlled and precise unloading of cargo on 3 sides without need of any extra man or machine power. Power pack, consisting of Iveco engine, hydro transmission and two small wheels without flange is  positioned in the middle of the car between the bogies. In the self-propelled regime wheels lower down to rails providing traction force needed for wagon manipulation. This car type requires special attention during design and calculations in order to achieve safe manipulation in all regimes.",
publisher = "Niš : Faculty of Mechanical Engineering",
journal = "Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš",
title = "Design specificity of Eams-z self-propelled wagon",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4292"
}
Radulović, S., Simić, G., Vidović, D.,& Golubović, S.. (2016). Design specificity of Eams-z self-propelled wagon. in Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš
Niš : Faculty of Mechanical Engineering..
https://hdl.handle.net/21.15107/rcub_machinery_4292
Radulović S, Simić G, Vidović D, Golubović S. Design specificity of Eams-z self-propelled wagon. in Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš. 2016;.
https://hdl.handle.net/21.15107/rcub_machinery_4292 .
Radulović, Saša, Simić, Goran, Vidović, Dražen, Golubović, Snežana, "Design specificity of Eams-z self-propelled wagon" in Proceedings / XVII Scientific-Expert Conference on Railways - RAILCON '16, October 13-14, 2016, Niš (2016),
https://hdl.handle.net/21.15107/rcub_machinery_4292 .

Осврт на испитивања кочнице Божић – 9 деценија касније

Simić, Goran; Milković, Dragan; Radulović, Saša

(Краљево : Факултет за машинство и грађевинарство Универзитетa у Крагујевцу, 2016)

TY  - CONF
AU  - Simić, Goran
AU  - Milković, Dragan
AU  - Radulović, Saša
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4297
AB  - У току 1927. и 1928. године, под надзором Међународне железничке
уније обављена су испитивања у циљу одобравања кочнице Божић за примену на возилима у међународном железничком саобраћају. Она су довела до светских патената, производње и коришћења те кочнице на великom броjу шинских возила, од којих су нека са Божић кочницом у саобраћају и данас. У раду су приказани најзанимљивији делови из извештаја о испитивањима. Оцењени су постигнути резултати и јединствени домет у историји железничког машинства Србије.
PB  - Краљево : Факултет за машинство и грађевинарство Универзитетa у Крагујевцу
C3  - Добривоје С. Божић - изумитељ савременог система кочења воза: тематски зборник
T1  - Осврт на испитивања кочнице Божић – 9 деценија касније
EP  - 62
SP  - 43
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4297
ER  - 
@conference{
author = "Simić, Goran and Milković, Dragan and Radulović, Saša",
year = "2016",
abstract = "У току 1927. и 1928. године, под надзором Међународне железничке
уније обављена су испитивања у циљу одобравања кочнице Божић за примену на возилима у међународном железничком саобраћају. Она су довела до светских патената, производње и коришћења те кочнице на великom броjу шинских возила, од којих су нека са Божић кочницом у саобраћају и данас. У раду су приказани најзанимљивији делови из извештаја о испитивањима. Оцењени су постигнути резултати и јединствени домет у историји железничког машинства Србије.",
publisher = "Краљево : Факултет за машинство и грађевинарство Универзитетa у Крагујевцу",
journal = "Добривоје С. Божић - изумитељ савременог система кочења воза: тематски зборник",
title = "Осврт на испитивања кочнице Божић – 9 деценија касније",
pages = "62-43",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4297"
}
Simić, G., Milković, D.,& Radulović, S.. (2016). Осврт на испитивања кочнице Божић – 9 деценија касније. in Добривоје С. Божић - изумитељ савременог система кочења воза: тематски зборник
Краљево : Факултет за машинство и грађевинарство Универзитетa у Крагујевцу., 43-62.
https://hdl.handle.net/21.15107/rcub_machinery_4297
Simić G, Milković D, Radulović S. Осврт на испитивања кочнице Божић – 9 деценија касније. in Добривоје С. Божић - изумитељ савременог система кочења воза: тематски зборник. 2016;:43-62.
https://hdl.handle.net/21.15107/rcub_machinery_4297 .
Simić, Goran, Milković, Dragan, Radulović, Saša, "Осврт на испитивања кочнице Божић – 9 деценија касније" in Добривоје С. Божић - изумитељ савременог система кочења воза: тематски зборник (2016):43-62,
https://hdl.handle.net/21.15107/rcub_machinery_4297 .

Sistem za merenje ugla naletanja točka na šinu pomoću laserskog uređaja

Milković, Dragan; Simić, Goran; Tanasković, Jovan; Lučanin, Vojkan; Jakovljević, Živana

(Odluka Nastavno-naučnog veća Mašinskog fakulteta br. 3269/3 od 22.01.2015., 2015)

TY  - GEN
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Tanasković, Jovan
AU  - Lučanin, Vojkan
AU  - Jakovljević, Živana
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6040
PB  - Odluka Nastavno-naučnog veća Mašinskog fakulteta br. 3269/3 od 22.01.2015.
T2  - Univerzitet u Beogradu Mašinski fakultet
T1  - Sistem za merenje ugla naletanja točka na šinu pomoću laserskog uređaja
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6040
ER  - 
@misc{
author = "Milković, Dragan and Simić, Goran and Tanasković, Jovan and Lučanin, Vojkan and Jakovljević, Živana",
year = "2015",
publisher = "Odluka Nastavno-naučnog veća Mašinskog fakulteta br. 3269/3 od 22.01.2015.",
journal = "Univerzitet u Beogradu Mašinski fakultet",
title = "Sistem za merenje ugla naletanja točka na šinu pomoću laserskog uređaja",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6040"
}
Milković, D., Simić, G., Tanasković, J., Lučanin, V.,& Jakovljević, Ž.. (2015). Sistem za merenje ugla naletanja točka na šinu pomoću laserskog uređaja. in Univerzitet u Beogradu Mašinski fakultet
Odluka Nastavno-naučnog veća Mašinskog fakulteta br. 3269/3 od 22.01.2015...
https://hdl.handle.net/21.15107/rcub_machinery_6040
Milković D, Simić G, Tanasković J, Lučanin V, Jakovljević Ž. Sistem za merenje ugla naletanja točka na šinu pomoću laserskog uređaja. in Univerzitet u Beogradu Mašinski fakultet. 2015;.
https://hdl.handle.net/21.15107/rcub_machinery_6040 .
Milković, Dragan, Simić, Goran, Tanasković, Jovan, Lučanin, Vojkan, Jakovljević, Živana, "Sistem za merenje ugla naletanja točka na šinu pomoću laserskog uređaja" in Univerzitet u Beogradu Mašinski fakultet (2015),
https://hdl.handle.net/21.15107/rcub_machinery_6040 .

Kombinovani apsorber kinetičke energije sudara šinskih vozila,

Tanasković, Jovan; Milković, Dragan; Lučanin, Vojkan; Simić, Goran

(Odluka Nastavno-naučnog veća Mašinskog fakulteta br. 237/3 od 06.03.2015., 2015)

TY  - GEN
AU  - Tanasković, Jovan
AU  - Milković, Dragan
AU  - Lučanin, Vojkan
AU  - Simić, Goran
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6024
AB  - Техничко решење се користи у индустрији шинских возила, током производње нових и модернизације постојећи путничких и теретних вагона. Комбиновани апсорбер, током судара вагона, има задатак да апсорбује одређени део кинетичке енергије судара и на тај начин знатно умањи оптерећење које се преноси на средишњи део носеће структуре возила. Употребом апсорпционих елемената знатно се повећава безбедност путника, робе и возила. Модуларна градња комбинованог апсорбера обезбеђује једноставну, брзу уградњу и замену, тако да се време искључења возила из саобраћаја своди на минимум, у поређењу са временом потребним за оправку хаварисаног железничког возила које саобраћа без елемената пасивне безбедности. Комбиновани апсорбер је развијен у циљу потпуног искоришћења материјала цеви, повећања апсорпционе моћи и добијања компактних димензија апсорбера. Оптимизацијом елемената, комбиновани апсорбер се може користити на различитим типовима шинских возила, попут локомотива, трамваја, електро-моторних возова, а модификацијом и у осталим гранама саобраћајне индустрије и индустрије грађевинских машина. 

Комбиновани апсорбер спада у стандардну опрему шинских возила – вучно одбојна спрема – пасивна безбедност шинских возила.
PB  - Odluka Nastavno-naučnog veća Mašinskog fakulteta br. 237/3 od 06.03.2015.
T2  - Univerzitet u Beogradu Mašinski fakultet
T1  - Kombinovani apsorber kinetičke energije sudara šinskih vozila,
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6024
ER  - 
@misc{
author = "Tanasković, Jovan and Milković, Dragan and Lučanin, Vojkan and Simić, Goran",
year = "2015",
abstract = "Техничко решење се користи у индустрији шинских возила, током производње нових и модернизације постојећи путничких и теретних вагона. Комбиновани апсорбер, током судара вагона, има задатак да апсорбује одређени део кинетичке енергије судара и на тај начин знатно умањи оптерећење које се преноси на средишњи део носеће структуре возила. Употребом апсорпционих елемената знатно се повећава безбедност путника, робе и возила. Модуларна градња комбинованог апсорбера обезбеђује једноставну, брзу уградњу и замену, тако да се време искључења возила из саобраћаја своди на минимум, у поређењу са временом потребним за оправку хаварисаног железничког возила које саобраћа без елемената пасивне безбедности. Комбиновани апсорбер је развијен у циљу потпуног искоришћења материјала цеви, повећања апсорпционе моћи и добијања компактних димензија апсорбера. Оптимизацијом елемената, комбиновани апсорбер се може користити на различитим типовима шинских возила, попут локомотива, трамваја, електро-моторних возова, а модификацијом и у осталим гранама саобраћајне индустрије и индустрије грађевинских машина. 

Комбиновани апсорбер спада у стандардну опрему шинских возила – вучно одбојна спрема – пасивна безбедност шинских возила.",
publisher = "Odluka Nastavno-naučnog veća Mašinskog fakulteta br. 237/3 od 06.03.2015.",
journal = "Univerzitet u Beogradu Mašinski fakultet",
title = "Kombinovani apsorber kinetičke energije sudara šinskih vozila,",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6024"
}
Tanasković, J., Milković, D., Lučanin, V.,& Simić, G.. (2015). Kombinovani apsorber kinetičke energije sudara šinskih vozila,. in Univerzitet u Beogradu Mašinski fakultet
Odluka Nastavno-naučnog veća Mašinskog fakulteta br. 237/3 od 06.03.2015...
https://hdl.handle.net/21.15107/rcub_machinery_6024
Tanasković J, Milković D, Lučanin V, Simić G. Kombinovani apsorber kinetičke energije sudara šinskih vozila,. in Univerzitet u Beogradu Mašinski fakultet. 2015;.
https://hdl.handle.net/21.15107/rcub_machinery_6024 .
Tanasković, Jovan, Milković, Dragan, Lučanin, Vojkan, Simić, Goran, "Kombinovani apsorber kinetičke energije sudara šinskih vozila," in Univerzitet u Beogradu Mašinski fakultet (2015),
https://hdl.handle.net/21.15107/rcub_machinery_6024 .

Experimental and numerical determination of the wheel-rail angle of attack

Milković, Dragan; Simić, Goran; Tanasković, Jovan; Jakovljević, Živana; Lučanin, Vojkan

(Univerzitet u Nišu, Niš, 2015)

TY  - JOUR
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Tanasković, Jovan
AU  - Jakovljević, Živana
AU  - Lučanin, Vojkan
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2132
AB  - Angle of attack is an important wheel-rail contact parameter. It serves for estimation of the rolling stock curving performance. Together with wheel-rail contact forces, angle of attack influences the wear index. This paper presents experimental on-track measurements of the angle of attack using a specially designed laser device installed on track. Experiments are performed on three types of rail vehicles: shunting locomotive series 631-301, motor unit 412-077 and trailing unit 416-077 of electromotor train 412/416. Experimental measurements are compared with multibody system (MBS) simulations using specialized computer package VAMPIRE Pro. We have found good agreement between the results obtained experimentally and by simulations. Using these data, we have also performed relative comparison of wear indices of the outer wheels of the leading wheelsets for each of the tested vehicles.
PB  - Univerzitet u Nišu, Niš
T2  - Facta Universitatis, Series: Mechanical Engineering
T1  - Experimental and numerical determination of the wheel-rail angle of attack
EP  - 131
IS  - 2
SP  - 123
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2132
ER  - 
@article{
author = "Milković, Dragan and Simić, Goran and Tanasković, Jovan and Jakovljević, Živana and Lučanin, Vojkan",
year = "2015",
abstract = "Angle of attack is an important wheel-rail contact parameter. It serves for estimation of the rolling stock curving performance. Together with wheel-rail contact forces, angle of attack influences the wear index. This paper presents experimental on-track measurements of the angle of attack using a specially designed laser device installed on track. Experiments are performed on three types of rail vehicles: shunting locomotive series 631-301, motor unit 412-077 and trailing unit 416-077 of electromotor train 412/416. Experimental measurements are compared with multibody system (MBS) simulations using specialized computer package VAMPIRE Pro. We have found good agreement between the results obtained experimentally and by simulations. Using these data, we have also performed relative comparison of wear indices of the outer wheels of the leading wheelsets for each of the tested vehicles.",
publisher = "Univerzitet u Nišu, Niš",
journal = "Facta Universitatis, Series: Mechanical Engineering",
title = "Experimental and numerical determination of the wheel-rail angle of attack",
pages = "131-123",
number = "2",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2132"
}
Milković, D., Simić, G., Tanasković, J., Jakovljević, Ž.,& Lučanin, V.. (2015). Experimental and numerical determination of the wheel-rail angle of attack. in Facta Universitatis, Series: Mechanical Engineering
Univerzitet u Nišu, Niš., 13(2), 123-131.
https://hdl.handle.net/21.15107/rcub_machinery_2132
Milković D, Simić G, Tanasković J, Jakovljević Ž, Lučanin V. Experimental and numerical determination of the wheel-rail angle of attack. in Facta Universitatis, Series: Mechanical Engineering. 2015;13(2):123-131.
https://hdl.handle.net/21.15107/rcub_machinery_2132 .
Milković, Dragan, Simić, Goran, Tanasković, Jovan, Jakovljević, Živana, Lučanin, Vojkan, "Experimental and numerical determination of the wheel-rail angle of attack" in Facta Universitatis, Series: Mechanical Engineering, 13, no. 2 (2015):123-131,
https://hdl.handle.net/21.15107/rcub_machinery_2132 .
2

Experimental measurements and numerical simulations of the wheel-rail angle of attack

Milković, Dragan; Simić, Goran; Tanasković, Jovan; Jakovljević, Živana

(2014)

TY  - CONF
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Tanasković, Jovan
AU  - Jakovljević, Živana
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5180
AB  - Angle of attack is important wheel-rail contact parameter and serves for estimation of the rolling stock curving performance. Together with wheel-rail contact forces, angle of attack influences the wear index. This paper presents experimental on-track measurements of the angle of attack using specially designed laser device installed on track. Experiments were performed on three type of rail vehicles: shunting locomotive series 631-301, motor unit 412-077 and trailing unit 416-077 of the electromotor train 412/416. Experimental measurements were compared with multibody system (MBS) simulations using specialized computer package VAMPIRE Pro. We found good agreement between the results obtained experimentally and by simulations.
C3  - XVI Scientific-expert conference on railways RAILCON 2014, Proceedings
T1  - Experimental measurements and numerical simulations of the wheel-rail angle of attack
EP  - 20
SP  - 17
DO  - 978-86-6055-060-8
ER  - 
@conference{
author = "Milković, Dragan and Simić, Goran and Tanasković, Jovan and Jakovljević, Živana",
year = "2014",
abstract = "Angle of attack is important wheel-rail contact parameter and serves for estimation of the rolling stock curving performance. Together with wheel-rail contact forces, angle of attack influences the wear index. This paper presents experimental on-track measurements of the angle of attack using specially designed laser device installed on track. Experiments were performed on three type of rail vehicles: shunting locomotive series 631-301, motor unit 412-077 and trailing unit 416-077 of the electromotor train 412/416. Experimental measurements were compared with multibody system (MBS) simulations using specialized computer package VAMPIRE Pro. We found good agreement between the results obtained experimentally and by simulations.",
journal = "XVI Scientific-expert conference on railways RAILCON 2014, Proceedings",
title = "Experimental measurements and numerical simulations of the wheel-rail angle of attack",
pages = "20-17",
doi = "978-86-6055-060-8"
}
Milković, D., Simić, G., Tanasković, J.,& Jakovljević, Ž.. (2014). Experimental measurements and numerical simulations of the wheel-rail angle of attack. in XVI Scientific-expert conference on railways RAILCON 2014, Proceedings, 17-20.
https://doi.org/978-86-6055-060-8
Milković D, Simić G, Tanasković J, Jakovljević Ž. Experimental measurements and numerical simulations of the wheel-rail angle of attack. in XVI Scientific-expert conference on railways RAILCON 2014, Proceedings. 2014;:17-20.
doi:978-86-6055-060-8 .
Milković, Dragan, Simić, Goran, Tanasković, Jovan, Jakovljević, Živana, "Experimental measurements and numerical simulations of the wheel-rail angle of attack" in XVI Scientific-expert conference on railways RAILCON 2014, Proceedings (2014):17-20,
https://doi.org/978-86-6055-060-8 . .

Experimental Research of Characteristics of Modified Tube Absorbers of Kinetic Collision Energy of Passenger Coaches

Tanasković, Jovan; Lučanin, Vojkan; Milković, Dragan; Simić, Goran; Miloš, Marko

(Wiley-Blackwell, Hoboken, 2014)

TY  - JOUR
AU  - Tanasković, Jovan
AU  - Lučanin, Vojkan
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Miloš, Marko
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1900
AB  - Development of elements for absorption of collision energy of railway vehicles represent an important segment in the design of new and restoration of existing railway passenger coaches. Absorption elements are part of passive protection measures used railway vehicles. Passive protection role is achieved when crash repercussions during impact are minimized. In this article, the analysis of the characteristics of modified tube absorbers for kinetic collision energy of passenger coaches is performed. The research focuses on quasi-static tests and dynamic tests. The presented solution is based on the use of steel tube elements that absorb a certain amount of collision energy of passenger coaches by controlled plastic deformation. The modified tube absorber is installed in a row with a standard buffer for passenger coaches. Given the results obtained, a final evaluation of this type of absorber is done. In addition, proposal for further research is offered with the goal to increase the safety level in railway tracffic.
PB  - Wiley-Blackwell, Hoboken
T2  - Experimental Techniques
T1  - Experimental Research of Characteristics of Modified Tube Absorbers of Kinetic Collision Energy of Passenger Coaches
EP  - 44
IS  - 3
SP  - 37
VL  - 38
DO  - 10.1111/j.1747-1567.2011.00800.x
ER  - 
@article{
author = "Tanasković, Jovan and Lučanin, Vojkan and Milković, Dragan and Simić, Goran and Miloš, Marko",
year = "2014",
abstract = "Development of elements for absorption of collision energy of railway vehicles represent an important segment in the design of new and restoration of existing railway passenger coaches. Absorption elements are part of passive protection measures used railway vehicles. Passive protection role is achieved when crash repercussions during impact are minimized. In this article, the analysis of the characteristics of modified tube absorbers for kinetic collision energy of passenger coaches is performed. The research focuses on quasi-static tests and dynamic tests. The presented solution is based on the use of steel tube elements that absorb a certain amount of collision energy of passenger coaches by controlled plastic deformation. The modified tube absorber is installed in a row with a standard buffer for passenger coaches. Given the results obtained, a final evaluation of this type of absorber is done. In addition, proposal for further research is offered with the goal to increase the safety level in railway tracffic.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "Experimental Techniques",
title = "Experimental Research of Characteristics of Modified Tube Absorbers of Kinetic Collision Energy of Passenger Coaches",
pages = "44-37",
number = "3",
volume = "38",
doi = "10.1111/j.1747-1567.2011.00800.x"
}
Tanasković, J., Lučanin, V., Milković, D., Simić, G.,& Miloš, M.. (2014). Experimental Research of Characteristics of Modified Tube Absorbers of Kinetic Collision Energy of Passenger Coaches. in Experimental Techniques
Wiley-Blackwell, Hoboken., 38(3), 37-44.
https://doi.org/10.1111/j.1747-1567.2011.00800.x
Tanasković J, Lučanin V, Milković D, Simić G, Miloš M. Experimental Research of Characteristics of Modified Tube Absorbers of Kinetic Collision Energy of Passenger Coaches. in Experimental Techniques. 2014;38(3):37-44.
doi:10.1111/j.1747-1567.2011.00800.x .
Tanasković, Jovan, Lučanin, Vojkan, Milković, Dragan, Simić, Goran, Miloš, Marko, "Experimental Research of Characteristics of Modified Tube Absorbers of Kinetic Collision Energy of Passenger Coaches" in Experimental Techniques, 38, no. 3 (2014):37-44,
https://doi.org/10.1111/j.1747-1567.2011.00800.x . .
8
3
8

Sistem za merenje sila u dodiru točak-šina

Milković, Dragan; Simić, Goran; Lučanin, Vojkan; Tanasković, Jovan

(Odluka Nastavno-naučnog veća Mašinskog fakultete br. 2533/3 od 26.12.2013., 2013)

TY  - GEN
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Lučanin, Vojkan
AU  - Tanasković, Jovan
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6041
PB  - Odluka Nastavno-naučnog veća Mašinskog fakultete br. 2533/3 od 26.12.2013.
T2  - Univerzitet u Beogradu Mašinski fakultet
T1  - Sistem za merenje sila u dodiru točak-šina
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6041
ER  - 
@misc{
author = "Milković, Dragan and Simić, Goran and Lučanin, Vojkan and Tanasković, Jovan",
year = "2013",
publisher = "Odluka Nastavno-naučnog veća Mašinskog fakultete br. 2533/3 od 26.12.2013.",
journal = "Univerzitet u Beogradu Mašinski fakultet",
title = "Sistem za merenje sila u dodiru točak-šina",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6041"
}
Milković, D., Simić, G., Lučanin, V.,& Tanasković, J.. (2013). Sistem za merenje sila u dodiru točak-šina. in Univerzitet u Beogradu Mašinski fakultet
Odluka Nastavno-naučnog veća Mašinskog fakultete br. 2533/3 od 26.12.2013...
https://hdl.handle.net/21.15107/rcub_machinery_6041
Milković D, Simić G, Lučanin V, Tanasković J. Sistem za merenje sila u dodiru točak-šina. in Univerzitet u Beogradu Mašinski fakultet. 2013;.
https://hdl.handle.net/21.15107/rcub_machinery_6041 .
Milković, Dragan, Simić, Goran, Lučanin, Vojkan, Tanasković, Jovan, "Sistem za merenje sila u dodiru točak-šina" in Univerzitet u Beogradu Mašinski fakultet (2013),
https://hdl.handle.net/21.15107/rcub_machinery_6041 .

Wayside system for wheel-rail contact forces measurements

Milković, Dragan; Simić, Goran; Jakovljević, Živana; Tanasković, Jovan; Lučanin, Vojkan

(Elsevier Sci Ltd, Oxford, 2013)

TY  - JOUR
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Jakovljević, Živana
AU  - Tanasković, Jovan
AU  - Lučanin, Vojkan
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1714
AB  - The system for assessment of the wheel-rail contact forces can be used for multiple purposes, among them for estimation of the train running safety, for train axle load measuring or wheel flats detection, as well as for the other research analyses. As the wheel-rail rolling contact moves along the track during train motion, it is very difficult to establish a reliable and accurate system for measuring of contact forces. Measurement principle of the wayside system, presented in this paper, is based on rail strains measurements using strain gauges, connected into the Wheatstone bridges in a smart way, in order to achieve signal proportional to applied load. This principle uses independent component analysis (ICA) model in combination with system calibration for successful separation of vertical and lateral contact forces from recorded strain signals. In addition, the system provides identification of the contact point position on the rail during train passing over it, which further expands the possibilities of its application to wheel-rail wear analysis, contact geometry optimization etc.
PB  - Elsevier Sci Ltd, Oxford
T2  - Measurement
T1  - Wayside system for wheel-rail contact forces measurements
EP  - 3318
IS  - 9
SP  - 3308
VL  - 46
DO  - 10.1016/j.measurement.2013.06.017
ER  - 
@article{
author = "Milković, Dragan and Simić, Goran and Jakovljević, Živana and Tanasković, Jovan and Lučanin, Vojkan",
year = "2013",
abstract = "The system for assessment of the wheel-rail contact forces can be used for multiple purposes, among them for estimation of the train running safety, for train axle load measuring or wheel flats detection, as well as for the other research analyses. As the wheel-rail rolling contact moves along the track during train motion, it is very difficult to establish a reliable and accurate system for measuring of contact forces. Measurement principle of the wayside system, presented in this paper, is based on rail strains measurements using strain gauges, connected into the Wheatstone bridges in a smart way, in order to achieve signal proportional to applied load. This principle uses independent component analysis (ICA) model in combination with system calibration for successful separation of vertical and lateral contact forces from recorded strain signals. In addition, the system provides identification of the contact point position on the rail during train passing over it, which further expands the possibilities of its application to wheel-rail wear analysis, contact geometry optimization etc.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Measurement",
title = "Wayside system for wheel-rail contact forces measurements",
pages = "3318-3308",
number = "9",
volume = "46",
doi = "10.1016/j.measurement.2013.06.017"
}
Milković, D., Simić, G., Jakovljević, Ž., Tanasković, J.,& Lučanin, V.. (2013). Wayside system for wheel-rail contact forces measurements. in Measurement
Elsevier Sci Ltd, Oxford., 46(9), 3308-3318.
https://doi.org/10.1016/j.measurement.2013.06.017
Milković D, Simić G, Jakovljević Ž, Tanasković J, Lučanin V. Wayside system for wheel-rail contact forces measurements. in Measurement. 2013;46(9):3308-3318.
doi:10.1016/j.measurement.2013.06.017 .
Milković, Dragan, Simić, Goran, Jakovljević, Živana, Tanasković, Jovan, Lučanin, Vojkan, "Wayside system for wheel-rail contact forces measurements" in Measurement, 46, no. 9 (2013):3308-3318,
https://doi.org/10.1016/j.measurement.2013.06.017 . .
50
19
57

Завршни сигнал ZS 01 Tip LED

Tanasković, Jovan; Lučanin, Vojkan; Milković, Dragan; Simić, Goran; Slavković, Milovan

(2012)

TY  - GEN
AU  - Tanasković, Jovan
AU  - Lučanin, Vojkan
AU  - Milković, Dragan
AU  - Simić, Goran
AU  - Slavković, Milovan
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5728
AB  - Tehničko rešenje se koristi u industriji šinskih vozila. Primenljivo je na novim i modernizovanim železnikim vozilama. Sastavni je deo svakog vagona. Spada u standardnu opremu šinskih vozila – signalno sigurnosni uređaj.
T2  - Машински факултет Универзитета у Београду
T1  - Завршни сигнал ZS 01 Tip LED
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5728
ER  - 
@misc{
author = "Tanasković, Jovan and Lučanin, Vojkan and Milković, Dragan and Simić, Goran and Slavković, Milovan",
year = "2012",
abstract = "Tehničko rešenje se koristi u industriji šinskih vozila. Primenljivo je na novim i modernizovanim železnikim vozilama. Sastavni je deo svakog vagona. Spada u standardnu opremu šinskih vozila – signalno sigurnosni uređaj.",
journal = "Машински факултет Универзитета у Београду",
title = "Завршни сигнал ZS 01 Tip LED",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5728"
}
Tanasković, J., Lučanin, V., Milković, D., Simić, G.,& Slavković, M.. (2012). Завршни сигнал ZS 01 Tip LED. in Машински факултет Универзитета у Београду.
https://hdl.handle.net/21.15107/rcub_machinery_5728
Tanasković J, Lučanin V, Milković D, Simić G, Slavković M. Завршни сигнал ZS 01 Tip LED. in Машински факултет Универзитета у Београду. 2012;.
https://hdl.handle.net/21.15107/rcub_machinery_5728 .
Tanasković, Jovan, Lučanin, Vojkan, Milković, Dragan, Simić, Goran, Slavković, Milovan, "Завршни сигнал ZS 01 Tip LED" in Машински факултет Универзитета у Београду (2012),
https://hdl.handle.net/21.15107/rcub_machinery_5728 .

Experimental and numerical analysis of flat cars connections between pivoting stanchions and main longitudinal beams

Milković, Dragan; Tanasković, Jovan; Simić, Goran

(University of Niš, Faculty of Mechanical Engineering, 2012)

TY  - CONF
AU  - Milković, Dragan
AU  - Tanasković, Jovan
AU  - Simić, Goran
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5721
AB  - This paper presents experimental and numerical strength analysis of some existing
designs of connections between pivoting stanchions and main longitudinal beams of flat cars, pointing out the problem of possible appearance of high contact stresses at some contact surfaces, that might cause some local deformations within plasticity range. Criterion set in the applicable standard requires that two side stanchions fitted to the wagon and positioned opposite each other, shall be able to withstand, without residual deformation, a force of 35 kN acting at 500 mm from
the bearing centre of the stanchions in a horizontal direction towards the outside of the wagon. Meeting this criterion and staying inside the limited available space, leaves only minor changes of dimensions of moving parts in a contact as a possible solution of this problem.
PB  - University of Niš, Faculty of Mechanical Engineering
C3  - XV Scinetific-expert conference on railways RAILCON 2012, Proceedings
T1  - Experimental and numerical analysis of flat cars connections between pivoting stanchions and main longitudinal beams
EP  - 8
SP  - 5
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5721
ER  - 
@conference{
author = "Milković, Dragan and Tanasković, Jovan and Simić, Goran",
year = "2012",
abstract = "This paper presents experimental and numerical strength analysis of some existing
designs of connections between pivoting stanchions and main longitudinal beams of flat cars, pointing out the problem of possible appearance of high contact stresses at some contact surfaces, that might cause some local deformations within plasticity range. Criterion set in the applicable standard requires that two side stanchions fitted to the wagon and positioned opposite each other, shall be able to withstand, without residual deformation, a force of 35 kN acting at 500 mm from
the bearing centre of the stanchions in a horizontal direction towards the outside of the wagon. Meeting this criterion and staying inside the limited available space, leaves only minor changes of dimensions of moving parts in a contact as a possible solution of this problem.",
publisher = "University of Niš, Faculty of Mechanical Engineering",
journal = "XV Scinetific-expert conference on railways RAILCON 2012, Proceedings",
title = "Experimental and numerical analysis of flat cars connections between pivoting stanchions and main longitudinal beams",
pages = "8-5",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5721"
}
Milković, D., Tanasković, J.,& Simić, G.. (2012). Experimental and numerical analysis of flat cars connections between pivoting stanchions and main longitudinal beams. in XV Scinetific-expert conference on railways RAILCON 2012, Proceedings
University of Niš, Faculty of Mechanical Engineering., 5-8.
https://hdl.handle.net/21.15107/rcub_machinery_5721
Milković D, Tanasković J, Simić G. Experimental and numerical analysis of flat cars connections between pivoting stanchions and main longitudinal beams. in XV Scinetific-expert conference on railways RAILCON 2012, Proceedings. 2012;:5-8.
https://hdl.handle.net/21.15107/rcub_machinery_5721 .
Milković, Dragan, Tanasković, Jovan, Simić, Goran, "Experimental and numerical analysis of flat cars connections between pivoting stanchions and main longitudinal beams" in XV Scinetific-expert conference on railways RAILCON 2012, Proceedings (2012):5-8,
https://hdl.handle.net/21.15107/rcub_machinery_5721 .