服役转臂节点刚度对运营车辆动力学影响研究  

Study on Influence of Stiffness of Service Nodal Point of Rotary Arm on Operation Vehicle Dynamics

作　　者：宋志坤[1] 王皓 胡晓依 孙琛 成棣 李强[1] SONG Zhikun;WANG Hao;HU Xiaoyi;SUN Chen;CHENG Di;LI Qiang(School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China;Railway Science&Technology Research&Development Center,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044 [2]中国铁道科学研究院集团有限公司,铁道科学技术研究发展中心,北京100081

出　　处：《铁道学报》2020年第4期35-42,共8页Journal of the China Railway Society

基　　金：中国铁路总公司科技研究开发计划(2017G011-C)。

摘　　要：运用SIMPACK软件建立CRH3型高速动车组模型,结合试验获得服役120万km转臂节点刚度变化范围,在考虑2种抗蛇行减振器、3种磨耗踏面与3种钢轨廓形匹配的实际运营工况下,仿真分析服役转臂节点刚度变化对车辆动力学性能的影响。结果表明:120万km服役转臂节点纵向刚度分布范围为90~150 MN/m,主要变化率在-10%~0%之间。在服役转臂节点刚度变化范围内,增大转臂节点纵向刚度可以降低车辆非线性临界速度及运行平稳性,并增大轮轨磨耗,其影响程度与轮轨匹配关系以及抗蛇行减振器种类关系紧密。为保证车辆运行稳定性及平稳性,建议避免使用60N(min-wear)钢轨,适当减小转臂节点刚度以及使用T60抗蛇行减振器。In this paper,the model of CRH3 high-speed EMU was established by SIMPCAK software,and the variation range of the stiffness of the nodel point of rotary arm serving 1.2 million kilometers was obtained by experiment.The simulation analyzed the influence of the stiffness variation of the service nodel point on the dynamic performance of the vehicle under the actual operation of two kinds of anti-yaw dampers and the matching condition of three kinds of wear wheel profiles and three kinds of rail profiles.The results show that the longitudinal stiffness distribution of the 1.2 million-kilometer jib joint is 90-150 MN/m,with the main rate of change being between-10%and 0%.Within the range of stiffness change of service nodal point of rotary arm,the increase of the longitudinal stiffness of the nodel point will reduce the vehicle’s nonlinear critical speed and ride comfort and will increase wheel-rail wear.The degree of influence is closely related to the wheel-rail matching relationship and the anti-yaw damper type.In order to ensure the stability and comfort of the vehicle,it is recommended to avoid the use of 60N(min-wear)rails,properly reduce the stiffness of the boom joints and use the T60 anti-snake damper.

关 键 词：转臂节点 轮轨匹配 抗蛇行减振器 动力学 

分 类 号：U260.33[机械工程—车辆工程]