In this paper, a simple and efficient numerical method to solve for the dynamic interaction of a high-speed train and railway structure during an earthquake is given. The motion of the train is modeled in multibody dynamics with nonlinear springs and dampers used to connect components. An efficient mechanical model for contact dynamics between the wheel and rail during an earthquake is presented. The railway structure is modeled with various finite elements. A nonlinear spring element based on a trilinear elastic-plastic material model is given for the concrete railway structure during an earthquake. A substructure model where a train runs repeatedly has been devised to obtain an approximated combined motion of the long train with many cars connected and the railway structure during an earthquake. A modal method has been developed to solve large-scale nonlinear equations of motion of the train and railway structure effectively. Based on the present method, a computer program DIASTARS for the dynamic interaction analysis of a Shinkansen train (high-speed train in Japan) and the railway structure during an earthquake has been developed. Numerical examples are demonstrated.
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October 2008
Research Papers
A Simple and Efficient Numerical Method for Dynamic Interaction Analysis of a High-Speed Train and Railway Structure During an Earthquake
M. Tanabe,
e-mail: tanabe@sd.kanagawa-it.ac.jp
M. Tanabe
Kanagawa Institute of Technology
, Atsugi, Kanagawa 243-0292, Japan
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N. Matsumoto,
N. Matsumoto
Railway Technical Research Institute
, Kokubunji, Tokyo 185-8540, Japan
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H. Wakui,
H. Wakui
Railway Technical Research Institute
, Kokubunji, Tokyo 185-8540, Japan
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M. Sogabe,
M. Sogabe
Railway Technical Research Institute
, Kokubunji, Tokyo 185-8540, Japan
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H. Okuda,
H. Okuda
Railway Technical Research Institute
, Kokubunji, Tokyo 185-8540, Japan
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Y. Tanabe
Y. Tanabe
Laboratory for Computational Mechanics Inc.
, 3-14-18 Kurihara-chuo, Zama 228-0014, Japan
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M. Tanabe
Kanagawa Institute of Technology
, Atsugi, Kanagawa 243-0292, Japane-mail: tanabe@sd.kanagawa-it.ac.jp
N. Matsumoto
Railway Technical Research Institute
, Kokubunji, Tokyo 185-8540, Japan
H. Wakui
Railway Technical Research Institute
, Kokubunji, Tokyo 185-8540, Japan
M. Sogabe
Railway Technical Research Institute
, Kokubunji, Tokyo 185-8540, Japan
H. Okuda
Railway Technical Research Institute
, Kokubunji, Tokyo 185-8540, Japan
Y. Tanabe
Laboratory for Computational Mechanics Inc.
, 3-14-18 Kurihara-chuo, Zama 228-0014, JapanJ. Comput. Nonlinear Dynam. Oct 2008, 3(4): 041002 (8 pages)
Published Online: August 19, 2008
Article history
Received:
August 3, 2007
Revised:
October 24, 2007
Published:
August 19, 2008
Citation
Tanabe, M., Matsumoto, N., Wakui, H., Sogabe, M., Okuda, H., and Tanabe, Y. (August 19, 2008). "A Simple and Efficient Numerical Method for Dynamic Interaction Analysis of a High-Speed Train and Railway Structure During an Earthquake." ASME. J. Comput. Nonlinear Dynam. October 2008; 3(4): 041002. https://doi.org/10.1115/1.2960482
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