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为对传动系统扭振特性给单节列车动力学性能造成的影响进行分析,把列车的传动系统简化为轴段与圆盘串联的系统,建立传动系统的扭振模型,同时计算由扭转振动产生的附加力矩。建立某高速列车的多体动力学模型,以附加力矩作为主要考虑指标,通过联合仿真,对比分析了考虑与不考虑动力传动系统扭振特性时单节列车在牵引工况下的动力学特性。结果表明,传动系统扭振对车身在横向、垂向上的振动加速度影响较大,在纵向上影响较小。但其给构架、轮对在纵向上会造成较大影响。因此,在对高速列车进行动力学分析时,考虑传动系统扭转振动特性,更符合列车的实际运行状态。
In order to analyze the influence of the torsional vibration characteristics of the transmission system on the dynamic performance of the single train, the transmission system of the train is simplified as the system of the shaft section and the disk in series, and the torsional vibration model of the transmission system is established. Simultaneously, Additional torque. The multi-body dynamics model of a high-speed train is established, and the additional torque is taken as the main consideration. Through the co-simulation, the dynamic characteristics of the single train under traction condition are compared and analyzed with or without considering the torsional vibration characteristics of the powertrain. The results show that the torsional vibration of the transmission system has a great influence on the lateral and vertical vibration acceleration of the vehicle body, and has less influence in the longitudinal direction. But to the structure, the wheel set will have a greater impact in the vertical. Therefore, in the dynamic analysis of high-speed trains, considering the torsional vibration characteristics of the transmission system, more in line with the actual operation of the train.