A new dynamic model of high-speed railway vehicle moving on curved tracks

Sen Yung Lee, Yung Chang Cheng

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


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.

Original languageEnglish
Article number011009
JournalJournal of Vibration and Acoustics
Issue number1
Publication statusPublished - 2008 Feb

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering


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