• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2017, Vol. 53 ›› Issue (6): 131-137.doi: 10.3901/JME.2017.06.131

• 运载工程 • 上一篇    下一篇

车下设备偏心对高速动车组运行平稳性的影响机理研究*

夏张辉, 宫岛, 周劲松, 孙文静, 孙煜   

  1. 同济大学铁道与城市轨道交通研究院 上海 201804
  • 出版日期:2017-03-20 发布日期:2017-03-20
  • 作者简介:夏张辉,男,1993年出生,博士研究生。主要研究方向为铁道车辆动力学。E-mail:xia_zhang_hui@163.com宫岛(通信作者),男,1985年出生,博士,硕士研究生导师。主要研究方向为铁道车辆动力学。E-mail:gongdao@tongji.edu.cn
  • 基金资助:
    * “十二五”国家科技支撑计划资助项目(2015BAG19B02); 20160509收到初稿,20161114收到修改稿;

On the Influence Mechanism of the under Chassis Equipment Eccentric on the Vehicle Ride Quality of High-speed EMU Train

XIA Zhanghui, GONG Dao, ZHOU Jinsong, SUN Wenjing, SUN Yu   

  1. Institute of Rail and Transit, Tongji University, Shanghai 201804
  • Online:2017-03-20 Published:2017-03-20

摘要:

建立包含车体弹性及车下设备的高速动车组精细化刚柔耦合动力学模型,研究车下设备固有频率优化取值,并研究车下设备偏心对整车振动性能的影响及其机理。结果表明,车下设备偏心会使车下设备六个方向自由度的振动发生耦合现象,导致各阶刚体振型及振型频率产生较大变化,致使车下设备固有频率偏离了原始设计最优值,减振效果降低、车辆运行平稳性变差。基于遗传算法,以解耦度为优化目标,以车下设备固有频率为约束条件,提出基于解耦度优化的车下设备悬挂系统各橡胶元件三向刚度协同设计方法。计算分析表明,车下设备各阶刚体振型可获得良好的解耦度,且悬挂系统减振效果显著,车辆运行平稳性得到有效改善。

关键词: 解耦度, 能量分布矩阵, 设备偏心, 橡胶元件, 高速动车组

Abstract:

A rigid-flexible coupling dynamic model of a high-speed EMU train which includes an elastic car body and a under chassis equipment is established, the optimal value of the natural frequency of the equipment is studied, and the effect and its mechanism of the eccentric of the equipment on the vehicle vibration performance are researched. Results show that the eccentric of the equipment may lead to a coupling vibration phenomenon of the six degrees of freedom, and each vibration mode shape and the relevant frequency change greatly and deviates from the original optimal value, resulting in a decrease in the effect of vibration reduction and the ride quality of the vehicle. Based on genetic algorithm, taking the decoupling degree as the optimization goal, the under chassis equipment natural frequencies as the constraints, the collaborative method for designing the three dimensional stiffness of the rubber components of the equipment suspension is proposed. Calculation results show that each rigid mode of the under chassis equipment can obtain a good decoupling degree, and the effect of the suspension on the vibration reduction is obvious and the vehicle ride quality can be improved effectively.

Key words: decoupling degree, energy distribution matrix, equipment eccentric, rubber component, high speed EMU train