基于有限元法的汽车底盘后桥焊接应力场仿真模拟  

Simulation of Welding Stress Field of Automobile Chassis Rear Axle Based on Finite Element Method

作　　者：闫超杰[1] YAN Chaojie(Department of Information and Manufacture,Min Xi Vocational & Technical College,Longyan Fujian 364021,China)

机构地区：[1]闽西职业技术学院信息与制造学院,福建龙岩364021

出　　处：《鞍山师范学院学报》2020年第4期16-19,共4页Journal of Anshan Normal University

基　　金：2018年福建省中青年教师教育科研项目(职业院校专项)(JZ181052)。

摘　　要：建立了汽车底盘后桥的几何模型和有限元模型.基于有限元软件ANSYS,对衬套和纵臂的焊接温度场分布进行了模拟计算,分析了衬套和纵臂连接处焊接后的残余应力场分布情况,并实际测量了衬套和纵臂连接处各对应位置的残余应力大小.结果表明,仿真值与实际应力值基本一致,证明了基于有限元仿真的数学模型和仿真结果的正确性和适用性.The geometric and finite element models of the rear axle of the automobile chassis are constructed.Based on the finite element software ANSYS,the distribution of the welding temperature field of the sleeve and the longitudinal arm is simulated and calculated,and the distribution of the residual stress field after welding at the joint of the sleeve and the longitudinal arm is analyzed,and the residual stress of each corresponding position of the weld is measured.The results show that the simulation value is basically consistent with the actual stress value,which proves the correctness and applicability of the mathematical model and simulation results based on the finite element simulation.

关 键 词：有限元 仿真模拟 汽车后桥 残余应力 

分 类 号：TG44[金属学及工艺—焊接]