低压电器
低壓電器
저압전기
LOW VOLTAGE APPARATUS
2014年
8期
14-18
,共5页
周婷%程时志%腾志君%顾章平%陈乐生
週婷%程時誌%騰誌君%顧章平%陳樂生
주정%정시지%등지군%고장평%진악생
电阻点焊%电触头%有限元法%熔核%焊接工艺%温度场%热应力
電阻點銲%電觸頭%有限元法%鎔覈%銲接工藝%溫度場%熱應力
전조점한%전촉두%유한원법%용핵%한접공예%온도장%열응력
resistance spot welding (RSW)%electrical contacts%finite element method%nugget%welding technology%temperature field%thermal stress
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。
建立瞭電觸頭電阻點銲過程的有限元分析模型，計算穫得接觸界麵的接觸電阻以及施加邊界條件。通過對電觸頭點銲過程的模擬，穫得瞭鎔覈的溫度場及銲接麵的電流密度分佈。同時，探討瞭銲接工藝對電極溫度場及熱應力的影響，髮現延長銲接時間可在一定程度上降低熱應力。
건립료전촉두전조점한과정적유한원분석모형，계산획득접촉계면적접촉전조이급시가변계조건。통과대전촉두점한과정적모의，획득료용핵적온도장급한접면적전류밀도분포。동시，탐토료한접공예대전겁온도장급열응력적영향，발현연장한접시간가재일정정도상강저열응력。
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 the 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.
