Using the multi-body dynamics simulation software Simpack, a dynamic model of the subway vehicle-track system with elastic wheelsets on curved lines is established. The influence of corrugation excitation with different characteristics on wheel-rail forces and wear, as well as the vertical vibration characteristics of the system, are studied. The results indicate that when the vehicle passes a straight creep point with a corrugation depth of 0.20 mm, the wheel-rail force reaches a value of 0 and exceeds the safety limit, resulting in decreased vehicle stability. When the vehicle passes the middle section of the curve and the corrugation depth is 0.20 mm, stress concentration occurs on the left wheel flange and right wheel tread, and the maximum contact stress is greater than the material yield limit, which leads to increased wheel-rail wear. The variation of corrugation wavelength causes a change in the peak range of vehicle structural vibration, and short-wavelength corrugation excitation leads to an increase in the peak energy, resulting in more obvious resonance. It is recommended to control the corrugation depth within 0.14 mm and conduct timely inspection and rail grinding of the line.
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