吉林大学学报(工学版) ›› 2020, Vol. 50 ›› Issue (5): 1600-1607.doi: 10.13229/j.cnki.jdxbgxb20190559

• 车辆工程·机械工程 • 上一篇    

轨道车辆垂向振动建模及运动关联分析

刘钊(),程江琳,朱玉田,郑立辉   

  1. 同济大学 机械与能源工程学院, 上海 201804
  • 收稿日期:2019-06-03 出版日期:2020-09-01 发布日期:2020-09-16
  • 作者简介:刘钊(1958-),男,教授,博士生导师.研究方向:机械设计与理论,机械振动分析与控制方法,机械控制与信息处理技术.E-mail:liuzhao@tongji.edu.cn
  • 基金资助:
    国家高技术研究发展计划(863计划)项目(2014AA041502)

Vertical vibration modeling and motion correlation analysis of rail vehicles

Zhao LIU(),Jiang-lin CHENG,Yu-tian ZHU,Li-hui ZHENG   

  1. School of Mechanical Engineering, Tongji University, Shanghai 201804, China
  • Received:2019-06-03 Online:2020-09-01 Published:2020-09-16

摘要:

轨道车辆行驶过程中线路轨迹的变化将影响车体的随机振动响应,在车辆行驶垂向加速度、车体角速度以及姿态角等运动参数的基础上,建立了轨道车辆车体垂向振动力学模型。通过对变系数微分方程组的数值求解获取轨道车辆运行过程中车体垂向的振动响应,并通过与试验测试振动加速度信号比较检验了所建振动力学模型的合理性。分析了车体垂向随机振动随车辆运动参数的变化情况,结果表明:车体垂向随机振动与行驶垂向加速度存在一定程度的关联性,为轨道车辆安全运行和进一步基于运动和振动信号的故障诊断奠定了基础。

关键词: 车辆工程, 轨道车辆, 垂向振动, 运行参数, 运动关联

Abstract:

The change of the railway track during rail vehicles travel will affect the vertical random vibration response of the vehicle body. Based on the vertical acceleration of the vehicle, the angular velocity of the vehicle body and the attitude angle, the vertical vibration mechanics model of the rail vehicles is established. The vertical vibration response of the vehicle body during the operation of the rail vehicles is obtained by numerical solution of the differential coefficient differential equations. The rationality of the vertical vibration mechanics model is tested by comparing with the experimental test vibration acceleration signal. The variation of vertical random vibration of vehicle body with train motion parameters is analyzed. The results show that there is a certain degree of correlation between vertical random vibration of vehicle body and vertical acceleration. It lays the foundation for the safe operation of rail trains and further fault diagnosis based on motion and vibration signals.

Key words: vehicle engineering, rail vehicles, vertical vibration, motion parameters, motion correlations

中图分类号: 

  • U270.7

图1

车体全局和连体坐标系示意图"

图2

车体欧拉角选择"

图3

车体结构示意图"

图4

车体振动力学模型"

图5

ADAMS车辆模型"

图6

轨道示意图"

图7

车体行驶速度时程"

图8

车体行驶垂向加速度时程"

图9

车体行驶路程时程"

图10

车体仿真垂向振动加速度时程"

图11

振动加速度现场采集图"

图12

实验测试车体振动加速度"

图13

实验和仿真的振动加速度信号总功率谱密度"

图14

行驶速度和车体振动加速度以及SW(t)时程对比"

图15

行驶垂向加速度和车体振动加速度以及SWt时程对比"

图16

振动加速度信号总功率谱密度与行驶垂向加速度的关联性分析"

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