麦弗逊悬挂的摆臂橡胶衬套优化分析

10.16638/jki.1671-7988.2020.15.035

麦弗逊悬挂的摆臂橡胶衬套优化分析

马良灿，纪浩*，陈小燕，李小珊

高频陶瓷（上汽通用五菱汽车股份有限公司技术中心，广西柳州545000）

摘要：通过对某车型麦弗逊前悬摆臂橡胶衬套本构模型参数识别，并搭建前悬系统的摆臂衬套有限元分析模型，分析衬套开口方向的接触压强，对衬套变形挤压产生的NVH问题进行了预测，并提出改进方案。利用Isight优化软件联合Aabqus有限元分析软件识别了橡胶衬套的Mooney-Rivlin本构模型C10、C01参数0.375和0.1011，并利用72通道振动加速度数采仪实测了颠簸路的衬套NVH表现情况，验证了有限元分析方法的可靠性。

关键词：橡胶衬套；本构模型；参数识别；接触压强

中图分类号：U463.33 文献标识码：A 文章编号：1671-7988(2020)15-105-04

The Welding Numerical Simulation Analysis of Automotive Torsion Beam

Ma Liangcan, Ji Hao*, Chen Xiaoyan, Li Xiaoshan

( Technology center of SAIC-GM-Wuling Automobile Co., Ltd., Guangxi Liuzhou 545000 )

黑发液

Abstract: Based on the welding thermal stress field numerical simulation analysis of weld easy to crack on a torsion beam, compared the effects on welding residual stress from different welding parameters. The study shows that: 1.The residual stress mutated in the heat-affected zone and its peak value is obviously different because of the use of different welding current and voltage. The residual stress peak value on the torsion beam side is higher than on the reinforcement plate side. The residual stress peak value is decreased with the increase of welding current. When it passed 240A the residual stress increase quickly. 2. The residual stress fluctuates at the start and end of the weld and its peak value is higher than the stable stress in the middle of the weld. 3. The most optimal weld stress distribution can be obtained by using 220A welding current, 24V current voltage, 10mm/s welding speed, and controlling the length of arc starting and ending at 15mm. The torsion beam welded with those welding process parameters has passed the road test, and cracking problems of torsion beam weld has been solved.衬套

Keywords: Torsion beam; Numerical simulation; Residual stress; Process parameters

手动胶

CLC NO.: U463.33 Document Code: A Article ID: 1671-7988(2020)15-105-04

1 前言燃料乙醇

橡胶衬套作为软连接部件，不仅提供各方向可调的支撑刚度，还能有效衰减各方向的振动噪声，对整车的操稳及乘坐舒适性起关键作用，在现代汽车悬架系统中被广泛运用[1-3]。橡胶衬套的静刚度、粘弹性等特性对整车动力学的影响是行业研究的热点重点。张平[4]等通过以橡胶的应力应变实验为基础，对橡胶衬套的本构模型识别进行了研究；彭福泰[5]等通过建立带弹性衬套的动力学模型，研究了不同的橡胶衬套刚度对悬架动力学特性参数的影响；M.J[6]等通过考虑了

作者简介：马良灿，就职于上汽通用五菱汽车股份有限公司技术中

心；通讯作者：纪浩（1987-），男，中级工程师，底盘CAE工程师，

就职于上汽通用五菱汽车股份有限公司技术中心。项目基金：柳州

市科技计划项目（2018AA20502）资助。车载数字电视

105

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