电触头电阻点焊过程的有限元模拟分析  

Analysis of Finite Element Simulation of Resistance Spot Welding Process of Electrical Contacts

作　　者：周婷[1] 程时志 腾志君 顾章平 陈乐生 

机构地区：[1]华侨大学机电工程及自动化学院,福建厦门361021 [2]西安交通大学焊接研究所,陕西西安710049 [3]浙江正泰电器股份有限公司,浙江乐清325603 [4]温州宏丰电工合金有限公司,浙江温州325603

出　　处：《低压电器》2014年第8期13-16,共4页Low Voltage Apparatus

摘　　要：建立了电触头电阻点焊过程的有限元分析模型,计算获得接触界面的接触电阻以及施加边界条件。通过对电触头点焊过程的模拟,获得了熔核的温度场及焊接面的电流密度分布。同时,探讨了焊接工艺对电极温度场及热应力的影响,发现延长焊接时间可在一定程度上降低热应力。A finite element analysis model was established for resistance spot welding of electrical contacts. The contact resistance of the contact interface was researched and the boundary conditions were applied. Temperature field and current density field in the nugget were obtained through the analysis. At tbe same time, the effect of welding technology on the electrode temperature field and thermal stress was investigated. The results show that prolonging the welding time can reduce the thermal stress to a certain extent.

关 键 词：电阻点焊 电触头 有限元法 熔核 焊接工艺 温度场 热应力 

分 类 号：TM503.5[电气工程—电器]