机车车辆横向动力学性能仿真——车辆轨道耦合模型与传统车辆模型的比较

Simulation of Lateral Dynamic Performances of Locomotives and Vehicles—Comparison of Vehicle/Track Coupling Model with Traditional Vehicle Model

运用经过大量线路实车运行试验验证的车辆 轨道耦合动力学仿真软件TTISIM,对传统车辆动力学和车辆 轨道耦合动力学两种类型模型的横向动力性能进行了比较与分析.结果表明:车辆无论是在直线上运行还是通过曲线轨道和道岔时,采用传统模型计算所得的轮轨横向相互动作用力均较采用耦合模型计算的大;仿真计算车辆蛇行失稳临界速度时,采用前一模型得到的结果较后者偏高;而两者计算所得的车辆垂向与横向振动差别甚小.

The lateral dynamic performances of vehicles are calculated with the vehicle/track coupling model and the traditional vehicle model to investigate the differences. The software TTISIM that has been verified by many field experiment results is used for the calculation. The results show that the lateral wheel/rail forces obtained with the traditional model are higher than those with the vehicle/track coupling model when vehicles running on tangent, curved tracks or turnouts, that the critical speed of hunting stability based on the vehicle/track theory is lower than that based on the traditional theory, and that there is not obvious difference in vertical and lateral vibrations determined with the two models.