Abstract

AbstractThe dynamic finite element equation based on the vehicle-track coupling system model and energy principle is a large-scale coupled equations, in which the vehicle and the track structure are not completely independent, it’s coupled by the wheel-rail contact force. In this chapter, three models are established from simple to complex: the moving element model of a single wheel, the moving element model of a single wheel with primary suspension system, and the moving element model of a single wheel with primary and secondary suspension system. On the basis of these models, the algorithm for simultaneously solving for dynamic response of the train-track coupling system is described and the corresponding explicit formulas are presented. As an application example, dynamic analysis of the train-track-bridge coupling system is carried out, and some conclusions are obtained. The source program, “dynamics calculation program WTBDYN_1.0 for the moving wheelset with primary and secondary suspension-track-continuous bridge coupling system” is developed by MATLAB mathematical tools, and given in Appendix D.

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