转向架用牵引橡胶堆稳定性分析  

Stability Analysis of Traction Rubber Pile for Bogie

作　　者：景安洲 阳光武[1] 肖守讷[1] 杨冰[1] 朱涛[1] JING Anzhou;YANG Guangwu;XIAO Shoune;YANG Bing;ZHU Tao(The State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《机车电传动》2021年第4期8-13,共6页Electric Drive for Locomotives

基　　金：国家自然科学基金项目(51675446,U1534209)。

摘　　要：选用橡胶本构方程Mooney-Rivlin模型,基于LS-Dyna软件分析转向架用牵引橡胶堆的承载性能,得到在纵向、横向和垂向载荷作用下的"力-位移"曲线(即橡胶堆的三向刚度),仿真结果与试验测试结果吻合程度良好,相对误差在10%左右,验证了此仿真计算方法的准确性。通过比较在纵向位移下不同硬度对橡胶堆稳定性的影响,发现牵引橡胶堆硬度为48 HA时的临界失稳纵向位移为35.2 mm,硬度为46 HA时其纵向承载能力最优;不同的安装方位对牵引橡胶堆失稳形式影响较大,建议牵引橡胶堆采用短边与工装长边平行排列的安装形式。By using the rubber constitutive equation named Mooney-Rivlin model, the load-bearing performance of the traction rubber pile for the bogie was analyzed by LS-Dyna, and the "force-displacement" curve(that is, three-way stiffness of rubber piles), were obtained on longitudinal, transverse and vertical loads. The calculation results are in good agreement with the test, and the relative errors are about 10%, which verifies the accuracy of the simulation method. By comparing the influence of different hardness on the stability of rubber pile under longitudinal displacement, the critical longitudinal displacement of the traction rubber pile is 35.2 mm when the hardness is 48 HA, and the longitudinal bearing capacity is the best when the hardness is 46 HA. Assembly directions also have great influence on its forms of instability. The installing form which use short side in parallel with clamping long side is suggested for traction rubber pile.

关 键 词：转向架 橡胶堆 三向刚度 硬度 安装方位 失稳临界值 有限元 仿真 

分 类 号：U270.1[机械工程—车辆工程] U260.331.5[交通运输工程—载运工具运用工程]