The Interaction Analysis Between Vehicle and Rail System

• Main Authors: Wu, Shih-Hung, 吳世鴻
• Other Authors: Chen Lien-Wen
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/57354480272784840449

碩士 === 國立成功大學 === 機械工程學系 === 86 === In this paper the effects of dynamic interactions of the track-vehicle system is studied. Higher vehicle speeds and corrugated rails generally lead to increase magnitude of the dynamic response (such as the deformation, acceleration and stress ) for the track as well as the vehicle, so it is important to reduce the interaction between the wheel and rail, and its transmission up to the vehicle subsystem and down to the track subsystem. Decreasing the interaction of the track-vehicle system can increase its service life and ride quality. The present model consists of two subsystems : vehicle and track. The vehicle subsystem is modelled as a spring-damper-mass system running on the track with a constant velocity, and the track substructure as an Euler-Bernoulli beam supported on Winkler elastic foundation . The interface between these two subsystems is the wheel/rail interaction described by Hertz nonlinear elastic contact theory . Effects of the speed, foundation stiffness and corrugated rails on the interaction of the track- vehicle system are studied.