【摘要】 本文把随机振动与强度分析结合起来，以客车车辆及ＲＤ＿３轴为例，计算在满载运行和曲线通过条件下车辆受随机轨道谱作用的动态响应及车轴动、静应力。在此基础上，分析车辆的随机动态响应，并对车辆进行疲劳强度校核以及薄弱部位的预测。本文采用的方法尤其在新设计转向架以及其它运输机械时，对不可能得到实测应力谱的主要承载部件，开展理论研究和预测其薄弱环节均具有一定参考价值。更多还原

【Abstract】 In this paper,we have combined random vibration with strength analysis and calculated boththe random response of the coach and the stress of the axle under the condition of passing alength of curve line in accordance with a 209 truck 22 passenger coach as an example,Based onthe results,we have predicted the weak links of axle,The method we adopted in the paper par-ticularly has value to the calculate dynamical stress of running parts in a new mechanical design.更多还原