Research on vehicle track coupling dynamics model based on equivalent lumped mass method

Inhalt:
Based on the equivalent lumped mass model, the coupled dynamics model of vehicle-track system (common track bed and combined track bed) is established in SIMPACK, and the vehicle and track are simulated. The complex contact between wheel and rail is fully considered. The mutual dynamic coupling relationship and the dynamic excitation effect of the wheel and rail truly reflect the influence of the track parameters on the dynamic performance of the vehicle track system. According to the model, the wheel-rail load of the system is calculated when the vehicle speed is 80km/h. The calculation results show that the wheel-rail force of the combined track bed system is smaller than the wheel-rail force of the ordinary track bed system. From the spectrum curve, the influence of vehicle excitation on the track is mainly In the low frequency range.