Abstract
In order to improve running stability and curving ability of railway vehicle with independently rotating wheels, an innovative structure, independently rotating wheels with negative tread conicity was proposed by one of the authors of this paper. Since the proposal of this structure, dynamics analysis based on simplified model had been implemented by means of simulation and scale model experiment. But precise numerical analysis has not been handled under the framework of multibody dynamics analysis to date. To this end, the multibody dynamics analysis of railway vehicle with independently rotating wheels using negative tread conicity is carried out in this paper. The modeling process is presented in detail, and for dealing with wheel/rail contact problem in railway vehicle, the velocity transformation and differential algebraic equation combination method is exploited. The simulation results indicate that the dynamics performance associate with running stability and curving ability could be improved by virtue of using negative tread conicity wheels.
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