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PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Edited by: J. Pombo
Dynamic Rolling Contact Analysis between Wheel/Rail by Large-Scale Parallel FEM
H. Sakai1, M. Takagaki1, M. Hayashi1, A. Aikawa1, H. Okuda2 and J. Yin3
1Railway Dynamics Division, Railway Technical Research Institute, Tokyo, Japan
H. Sakai, M. Takagaki, M. Hayashi, A. Aikawa, H. Okuda, J. Yin, "Dynamic Rolling Contact Analysis between Wheel/Rail by Large-Scale Parallel FEM", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 248, 2014. doi:10.4203/ccp.104.248
Keywords: finite element method, large-scale parallel computing, dynamic rolling contact, contact patch, impact load, dynamic partitioning.
In this paper, we attempt to make dynamic rolling contact analysis between wheel/rail by the three-dimensional finite element method in large-scale parallel computing. In this analysis, we clarify the mechanical behaviour of the contact patch, when a wheel rolls at a high speed with loading torque. The technique of an efficient rail model is developed to accelerate the wheel in the rail at a small model size. In addition, the present method has a technique of dynamic partitioning to include the contact patch in one partition region on the parallel calculation with the wheel rolling. As a result, it became possible to evaluate the dynamic rolling contact behaviour between wheel/rail.
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