A new dynamic model of railway vehicle moving on curved tracks is proposed. In the new model, the motion of the car body is considered and the motion of the truck frame is not restricted by a virtual boundary. Based on the heuristic nonlinear creep model, the nonlinear coupled differential equations of the motion of an eight degrees of freedom car system—considering the lateral displacement and the yaw angle of each wheelset, the truck frame, and the half car body—moving on curved tracks are derived completely. To illustrate the accuracy of the analysis, the limiting cases are examined. It is shown that the influence of the gyroscopic moment of the wheelsets on the critical hunting speed is negligible. In addition, the influences of the suspension parameters, including those losing in the six degrees of freedom system, on the critical hunting speeds evaluated via the linear and the nonlinear creep models are studied and compared.
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e-mail: sylee@mail.ncku.edu.tw
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February 2008
Research Papers
A New Dynamic Model of High-Speed Railway Vehicle Moving on Curved Tracks
Sen-Yung Lee,
Sen-Yung Lee
Professor
Department of Mechanical Engineering,
e-mail: sylee@mail.ncku.edu.tw
National Cheng Kung University
, Tainan 701, Taiwan, R.O.C.
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Yung-Chang Cheng
Yung-Chang Cheng
Assistant Professor
Department of Mechanical and Automation Engineering,
National Kaohsiung First University of Science and Technology
, Kaohsiung 811, Taiwan R.O.C.
Search for other works by this author on:
Sen-Yung Lee
Professor
Department of Mechanical Engineering,
National Cheng Kung University
, Tainan 701, Taiwan, R.O.C.e-mail: sylee@mail.ncku.edu.tw
Yung-Chang Cheng
Assistant Professor
Department of Mechanical and Automation Engineering,
National Kaohsiung First University of Science and Technology
, Kaohsiung 811, Taiwan R.O.C.J. Vib. Acoust. Feb 2008, 130(1): 011009 (10 pages)
Published Online: November 15, 2007
Article history
Received:
January 17, 2006
Revised:
June 2, 2007
Published:
November 15, 2007
Citation
Lee, S., and Cheng, Y. (November 15, 2007). "A New Dynamic Model of High-Speed Railway Vehicle Moving on Curved Tracks." ASME. J. Vib. Acoust. February 2008; 130(1): 011009. https://doi.org/10.1115/1.2775515
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