摘要
高速动车组在运行时,其运行平稳性与抗蛇行减振器工作状态息息相关。分析了不同程度的抗蛇行减振器故障和多组抗蛇行减振器故障组合影响下,运用车辆系统动力学和广义共振理论,仿真车辆运行状态。基于抗蛇行减振器故障后的剩余阻尼力大小,分析了故障情况下车辆、车体及构架的振动性能和动力学指标,找到容易引发车辆共振的故障状态及危机车辆平稳性的抗蛇行减振器故障程度。给出了可以判别抗蛇行减振器故障及组合故障情况的故障识别方法,以便尽早甄别并排除抗蛇行减振器故障。分析表明:该识别方法是可行的。
When Electric Multiple Units( EMU) is running in high speed,the working function of yaw damper is closely related with the vehicle stability. When a malfunction occurred at yaw damper with different levels and combined with malfunction from multigroups of yaw dampers,the effects were analyzed,the theories of dynamics and generalized resonance of vehicle system were applied and its running state was simulated. Based on the size of remaining damping force of anti-yaw damper after malfunction occurred,the vibration performance and vehicle dynamic index of either car-body or structural frame in malfunction were analyzed,and the anti-yaw damper degree of malfunction was found which easily caused malfunction state of vehicle resonance and crisis of its stationary. A yaw damper malfunction identification method was raised of either single malfunction or the combination of multi-malfunction,so as to identify and exclude further damage as soon as possible. The analysis results show that this method is feasible.
出处
《机床与液压》
北大核心
2016年第1期188-193,共6页
Machine Tool & Hydraulics
