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A three dimensional rigid-flexible coupled vehicle system dynamics model was built to simulate the vibration response of carbody, and the short wave of track spectrum was considered during simulation. Before the simulation, the finite element model (FEM) and substructure modal analysis of carbody was completed by ABAQUS software, the vehicle system dynamics model was established by SIMPACK software, and the short wave of track spectrum was modified by line test vibration data. Two concerned positions of carbody underframe, which located separately in middle of side beam and center of underframe, was chosen to verify the results from theoretical model and line test. The comparison results illustrate that rigid-flexible coupled model combined with track short wave effect could be used to simulate the resonance vibration of carbody appropriately.

Research on resonance vibration simulation method of high-speed railway vehicle carbody