Experimental reseraches and numerical simulations of combined collision energy absorber
Апстракт
The subject of this paper is experimental researches and numerical simulations of
combined collision energy absorber. The mentioned elements are parts of passive safety measures of railway vehicles. This type of absorbers works on the principle of deformation using shrinking and folding process of the tubes. The idea was to use process of shrinking and folding of the tubes in a parallel mode to absorb as much of the collision kinetic energy as possible by controlled deformation, with limited dimensions of absorber. Energy absorption occurred by elastic-plastic
deformations of the tubes and friction between the tube and the cone bush. Using combined method, during the collision, energy absorption starts in the tube which is compressed into cone bush. After pre-defined stroke in the process of energy absorption the simultaneous process of folding of the outer tube starts, so both tubes deform in parallel mode during the rest of the stroke. In this way the force gradually increases with...out undesirable peaks during the entire stroke, resulting
significant bigger amount of absorbed energy. Experimental investigations of combined absorber were realized in laboratory conditions. During experimental investigations the stroke and force were measured. The numerical simulations were used for checking the absorption power of absorption elements before the experimental researches. After the tests were completed, the recorded data were
analyzed and force versus stroke diagrams of numerical simulation and quasi-static test were made. Results of calculation using FEM and results obtained experimentaly are in good correlation.
Кључне речи:
Experimental researches / combined absorber / railway vehicle / passive safetyИзвор:
XV Scinetific-expert conference on railways RAILCON 2012, Proceedings, 2012, 25-28Издавач:
- University of Niš, Faculty of Mechanical Engineering
Финансирање / пројекти:
- Научно-технолошка подршка унапређењу безбедности специјалних друмских и шинских возила (RS-MESTD-Technological Development (TD or TR)-35045)
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Tanasković, Jovan AU - Milković, Dragan AU - Lučanin, Vojkan PY - 2012 UR - https://machinery.mas.bg.ac.rs/handle/123456789/5720 AB - The subject of this paper is experimental researches and numerical simulations of combined collision energy absorber. The mentioned elements are parts of passive safety measures of railway vehicles. This type of absorbers works on the principle of deformation using shrinking and folding process of the tubes. The idea was to use process of shrinking and folding of the tubes in a parallel mode to absorb as much of the collision kinetic energy as possible by controlled deformation, with limited dimensions of absorber. Energy absorption occurred by elastic-plastic deformations of the tubes and friction between the tube and the cone bush. Using combined method, during the collision, energy absorption starts in the tube which is compressed into cone bush. After pre-defined stroke in the process of energy absorption the simultaneous process of folding of the outer tube starts, so both tubes deform in parallel mode during the rest of the stroke. In this way the force gradually increases without undesirable peaks during the entire stroke, resulting significant bigger amount of absorbed energy. Experimental investigations of combined absorber were realized in laboratory conditions. During experimental investigations the stroke and force were measured. The numerical simulations were used for checking the absorption power of absorption elements before the experimental researches. After the tests were completed, the recorded data were analyzed and force versus stroke diagrams of numerical simulation and quasi-static test were made. Results of calculation using FEM and results obtained experimentaly are in good correlation. PB - University of Niš, Faculty of Mechanical Engineering C3 - XV Scinetific-expert conference on railways RAILCON 2012, Proceedings T1 - Experimental reseraches and numerical simulations of combined collision energy absorber EP - 28 SP - 25 UR - https://hdl.handle.net/21.15107/rcub_machinery_5720 ER -
@conference{ author = "Tanasković, Jovan and Milković, Dragan and Lučanin, Vojkan", year = "2012", abstract = "The subject of this paper is experimental researches and numerical simulations of combined collision energy absorber. The mentioned elements are parts of passive safety measures of railway vehicles. This type of absorbers works on the principle of deformation using shrinking and folding process of the tubes. The idea was to use process of shrinking and folding of the tubes in a parallel mode to absorb as much of the collision kinetic energy as possible by controlled deformation, with limited dimensions of absorber. Energy absorption occurred by elastic-plastic deformations of the tubes and friction between the tube and the cone bush. Using combined method, during the collision, energy absorption starts in the tube which is compressed into cone bush. After pre-defined stroke in the process of energy absorption the simultaneous process of folding of the outer tube starts, so both tubes deform in parallel mode during the rest of the stroke. In this way the force gradually increases without undesirable peaks during the entire stroke, resulting significant bigger amount of absorbed energy. Experimental investigations of combined absorber were realized in laboratory conditions. During experimental investigations the stroke and force were measured. The numerical simulations were used for checking the absorption power of absorption elements before the experimental researches. After the tests were completed, the recorded data were analyzed and force versus stroke diagrams of numerical simulation and quasi-static test were made. Results of calculation using FEM and results obtained experimentaly are in good correlation.", publisher = "University of Niš, Faculty of Mechanical Engineering", journal = "XV Scinetific-expert conference on railways RAILCON 2012, Proceedings", title = "Experimental reseraches and numerical simulations of combined collision energy absorber", pages = "28-25", url = "https://hdl.handle.net/21.15107/rcub_machinery_5720" }
Tanasković, J., Milković, D.,& Lučanin, V.. (2012). Experimental reseraches and numerical simulations of combined collision energy absorber. in XV Scinetific-expert conference on railways RAILCON 2012, Proceedings University of Niš, Faculty of Mechanical Engineering., 25-28. https://hdl.handle.net/21.15107/rcub_machinery_5720
Tanasković J, Milković D, Lučanin V. Experimental reseraches and numerical simulations of combined collision energy absorber. in XV Scinetific-expert conference on railways RAILCON 2012, Proceedings. 2012;:25-28. https://hdl.handle.net/21.15107/rcub_machinery_5720 .
Tanasković, Jovan, Milković, Dragan, Lučanin, Vojkan, "Experimental reseraches and numerical simulations of combined collision energy absorber" in XV Scinetific-expert conference on railways RAILCON 2012, Proceedings (2012):25-28, https://hdl.handle.net/21.15107/rcub_machinery_5720 .