单牵引拉杆节点刚度对车辆动力学性能的影响  

Influence of Single Traction Rod Joint Stiffness on Metro Vehicle Dynamic Performance

作　　者：孙文静[1] 周劲松[1] 宫岛[1] 吴萌岭[1] 

机构地区：[1]同济大学铁道与城市轨道交通研究院,上海博士研究生200092

出　　处：《城市轨道交通研究》2011年第10期28-32,共5页Urban Mass Transit

基　　金：国家"十一五"科技支撑计划(2009BAG11B02)

摘　　要：依据单牵引拉杆橡胶节点的转动刚度,推导出其对地铁车辆二系悬挂附加刚度的计算式。通过其对车辆模态参数的影响验证了附加刚度计算公式的正确性。分析表明,牵引拉杆的节点转动刚度为车辆二系悬挂提供了等效的横向与垂向附加刚度,从而对车辆动力学性能产生一定影响。牵引拉杆节点转动刚度对车辆动力学性能的影响可通过计算其对二系悬挂的附加刚度获得直观认识。节点转动刚度越小对车辆动力学性能影响越小,在偏转刚度200Nm/(°)内,影响不大。Based on the single traction rod rubber joint stiffness, the secondary suspension additional stiffness formula of metro vehicle is deduced in this paper. The influence of the stiffness on vehicle modal parameters has verified the correctness of the formula. This analysis shows that the traction rod rotational stiffness could provide equivalent lateral stiffness and vertical stiffness for metro vehicle secondary suspension system, thus it will have a certain impact on metro vehicle dynamic performance. The intuitive understanding of this impact can be obtained through calculating the secondary suspension equivalent additional stiffness.

关 键 词：车辆 单牵引拉杆 转动刚度 动力学性能 

分 类 号：U270.11[机械工程—车辆工程]