低地板车辆的踏面外形设计及动力学仿真

Study of Dynamic Performances of Low Floor Tramcar with Modified Wheel Profiles Designed Via Contact-angle-curve (CAC) Method

针对一实际运行中的低地板面轻轨车辆及其轮轨磨耗问题 ,采用接触角反推法设计了优化的独立轮踏面外形 ,并建立了多车体的整列车动态仿真模型及基于SIMULINK的计算模块 ,分析了踏面外形及轮对内侧距对车辆动力学性能的影响 .通过实际运用证明了用接触角设计方法获得的新踏面外形的有效性 .在仿真计算模型中对带摩擦旁承的摇枕模型进行了改进 。

A series of wheel profiles are created via CAC(contact angle curve) method for a practical low floor tramcar suffering from heavy wheel/rail wear. Validation of these profiles are also undertaken via computer simulations with a nonlinear dynamic model based on SIMULINK  for the tramcar consisting of three jointed car bodies and three bogies. The results show both of the effectiveness of CAC method and the updated modeling method for bolsters with friction side-bearings.