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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 98
Edited by: J. Pombo
Paper 74

Mesh Sensitivity Analysis in the Design of High Speed Trains

A.Q. Tian1, L.F. Jin2, M. Gong1, S.S. Ding1 and Z. Zhang2

1CSR Qingdao Sifang Locomotive & Rolling Stock Co., Ltd., Qingdao, China
2State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, China

Full Bibliographic Reference for this paper
A.Q. Tian, L.F. Jin, M. Gong, S.S. Ding, Z. Zhang, "Mesh Sensitivity Analysis in the Design of High Speed Trains", in J. Pombo, (Editor), "Proceedings of the First International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 74, 2012. doi:10.4203/ccp.98.74
Keywords: high speed train, finite element method, mesh sensitivity.

Mesh sensitivity analysis is very important for the finite element analysis in areas with stress concentrations or with welds. The treatment of the meshes in the finite element analysis of the high speed train can significantly affect the computational results and then affect the design of the structures of the high speed train. The results obtained in current work can be summarized as follows:
  1. From the comparison of different load cases with different meshes, the predictions of the stresses and displacements of the high speed train body are investigated in detail.
  2. With the increase of the mesh density, the predicted displacement is increases to be closer to the actual value. But the predicted stresses can be higher than the actual stresses.
  3. The mesh densities in the transition region hardly affect the computational results in the hot points of high stresses in the finite element model.

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