TY  - JOUR
AU  - Tanasković, Jovan
AU  - Franklin, F.
AU  - Radović, Nenad A.
AU  - Zivić, Fatima
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3826
AB  - The subject of this paper is the structural design of a safety steel device that is located between the standard wagon buffer and the collision energy absorber. The safety steel device is a sacrifical part able to withstand normal operating loads from the buffer across the absorber to the vehicle bearing structure without any permanent deformation, but experiences fully controlled fracture when the load exceeds the defined threshold. Following fracture, the load path is through the energy absorber. The sacrificial part is a ring made from quenched and tempered low alloyed steel with precisely defined heat treatment and material properties. Experimental investigations of scaled samples were performed to get mechanical characteristics of the material and geometry. A full-scale prototype of the safety device was produced, and final quasi-static and dynamic experiments were conducted. The results validate the anaytical predictions, and thus validate the design method used here for dimensioning the safety steel device.
PB  - Budapest Tech Polytechnical Institution
T2  - Acta Polytechnica Hungarica
T1  - Structural Design of Safety Steel Device of Railway Vehicles Through Analytical and Experimental Investigations
EP  - 33
IS  - 6
SP  - 21
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3826
ER  - 

@article{
author = "Tanasković, Jovan and Franklin, F. and Radović, Nenad A. and Zivić, Fatima",
year = "2022",
abstract = "The subject of this paper is the structural design of a safety steel device that is located between the standard wagon buffer and the collision energy absorber. The safety steel device is a sacrifical part able to withstand normal operating loads from the buffer across the absorber to the vehicle bearing structure without any permanent deformation, but experiences fully controlled fracture when the load exceeds the defined threshold. Following fracture, the load path is through the energy absorber. The sacrificial part is a ring made from quenched and tempered low alloyed steel with precisely defined heat treatment and material properties. Experimental investigations of scaled samples were performed to get mechanical characteristics of the material and geometry. A full-scale prototype of the safety device was produced, and final quasi-static and dynamic experiments were conducted. The results validate the anaytical predictions, and thus validate the design method used here for dimensioning the safety steel device.",
publisher = "Budapest Tech Polytechnical Institution",
journal = "Acta Polytechnica Hungarica",
title = "Structural Design of Safety Steel Device of Railway Vehicles Through Analytical and Experimental Investigations",
pages = "33-21",
number = "6",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3826"
}

Tanasković, J., Franklin, F., Radović, N. A.,& Zivić, F.. (2022). Structural Design of Safety Steel Device of Railway Vehicles Through Analytical and Experimental Investigations. in Acta Polytechnica Hungarica
Budapest Tech Polytechnical Institution., 19(6), 21-33.
https://hdl.handle.net/21.15107/rcub_machinery_3826

Tanasković J, Franklin F, Radović NA, Zivić F. Structural Design of Safety Steel Device of Railway Vehicles Through Analytical and Experimental Investigations. in Acta Polytechnica Hungarica. 2022;19(6):21-33.
https://hdl.handle.net/21.15107/rcub_machinery_3826 .

Tanasković, Jovan, Franklin, F., Radović, Nenad A., Zivić, Fatima, "Structural Design of Safety Steel Device of Railway Vehicles Through Analytical and Experimental Investigations" in Acta Polytechnica Hungarica, 19, no. 6 (2022):21-33,
https://hdl.handle.net/21.15107/rcub_machinery_3826 .

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

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

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

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

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

TY  - JOUR
AU  - Tanasković, Jovan
AU  - Franklin, F.
AU  - Disić, A.
AU  - Mišković, Žarko
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2525
AB  - This paper describes the validation process of numerical model of combined collision kinetic energy absorber of rail vehicles based on results of experimental investigations. Combined absorber works on the principle of extrusion-splitting the seamless tube. With the aim to choose the most appropriate tube geometry, the tubes of different geometry of cross-section were made and tested. Key geometry parts have the shape and length of the grooves along the inner tube wall. During the second phase of deformation comes to controlled splitting of the tube wall along these grooves. Experimental and numerical investigations were realised on the scaled samples. Using this type of absorber, energy absorption occurs by friction between absorption elements and elastic-plastic deformation of the tube. Combining the two deformation processes gives a higher absorption power as well as compact dimensions of absorber which can be installed in a very limited space in the front part of the vehicle structure. Creation of the numerical model and numerical simulations of extrusion-splitting processes were realised using SolidWorks and ANSYS LS-Dyna software packages. Results of experimental investigations and numerical simulations show very good agreement which verifies developed numerical model for use in further investigations in this field.
PB  - Springer, New York
T2  - Experimental Techniques
T1  - Numerical Validation of the Combined Extrusion-Splitting Process of Energy Absorption Through Experimental Study
EP  - 431
IS  - 4
SP  - 421
VL  - 41
DO  - 10.1007/s40799-017-0185-2
ER  - 

@article{
author = "Tanasković, Jovan and Franklin, F. and Disić, A. and Mišković, Žarko",
year = "2017",
abstract = "This paper describes the validation process of numerical model of combined collision kinetic energy absorber of rail vehicles based on results of experimental investigations. Combined absorber works on the principle of extrusion-splitting the seamless tube. With the aim to choose the most appropriate tube geometry, the tubes of different geometry of cross-section were made and tested. Key geometry parts have the shape and length of the grooves along the inner tube wall. During the second phase of deformation comes to controlled splitting of the tube wall along these grooves. Experimental and numerical investigations were realised on the scaled samples. Using this type of absorber, energy absorption occurs by friction between absorption elements and elastic-plastic deformation of the tube. Combining the two deformation processes gives a higher absorption power as well as compact dimensions of absorber which can be installed in a very limited space in the front part of the vehicle structure. Creation of the numerical model and numerical simulations of extrusion-splitting processes were realised using SolidWorks and ANSYS LS-Dyna software packages. Results of experimental investigations and numerical simulations show very good agreement which verifies developed numerical model for use in further investigations in this field.",
publisher = "Springer, New York",
journal = "Experimental Techniques",
title = "Numerical Validation of the Combined Extrusion-Splitting Process of Energy Absorption Through Experimental Study",
pages = "431-421",
number = "4",
volume = "41",
doi = "10.1007/s40799-017-0185-2"
}

Tanasković, J., Franklin, F., Disić, A.,& Mišković, Ž.. (2017). Numerical Validation of the Combined Extrusion-Splitting Process of Energy Absorption Through Experimental Study. in Experimental Techniques
Springer, New York., 41(4), 421-431.
https://doi.org/10.1007/s40799-017-0185-2

Tanasković J, Franklin F, Disić A, Mišković Ž. Numerical Validation of the Combined Extrusion-Splitting Process of Energy Absorption Through Experimental Study. in Experimental Techniques. 2017;41(4):421-431.
doi:10.1007/s40799-017-0185-2 .

Tanasković, Jovan, Franklin, F., Disić, A., Mišković, Žarko, "Numerical Validation of the Combined Extrusion-Splitting Process of Energy Absorption Through Experimental Study" in Experimental Techniques, 41, no. 4 (2017):421-431,
https://doi.org/10.1007/s40799-017-0185-2 . .