Title: Stability analysis of High-Speed Railway vehicle using half-car model

Authors: Yung-Chang Cheng, Sen-Yung Lee

Addresses: Department of Mechanical and Automation Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung, Taiwan 811, Republic of China. ' Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan 701, Republic of China

Abstract: A dynamic model of a railway vehicle moving on tangent tracks is developed. The governing differential equations of motion for a 12-DOF half-car system are derived with incorporation of the lateral and yaw movements of each wheel set, the lateral and vertical displacements, and the roll and yaw movements of the truck frame and the half-car body. The effects of physical parameters on critical hunting speeds in the 6-DOF, 8-DOF and 12-DOF models are also investigated. The effect of certain physical parameters, which were not considered in the 6-DOF model, is investigated for wheels of different conicities.

Keywords: critical hunting speed; tangent tracks; 12-DOF systems; stability analysis; high-speed railway vehicles; half-car models; dynamic modelling; heavy vehicles; lateral movements; yaw movements; lateral displacement; vertical displacement; roll movements; truck frame.

DOI: 10.1504/IJHVS.2010.033179

International Journal of Heavy Vehicle Systems, 2010 Vol.17 No.2, pp.139 - 158

Available online: 10 May 2010 *

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