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In this paper, the reasons for the failure of the fastener, the performance characteristics of the fastener and the importance of the fastener system to the stability of the track are briefly introduced. Based on the effect of the fastener failure on the wheel and rail, a vehicle track vertical coupled vibration analysis model is established, from the vertical interaction force of the wheel rail, the vehicle subsystem and the vertical interaction of the track. In order to ensure the stability, reliability and safety of railway transportation, the influence of different modes of fastener failure on the dynamic characteristics of wheel rail system under different conditions is carried out under different conditions.

Research on Influence of Rail Fastener Failure on Vertical Interaction between Wheel and Rail