摘要
基于ANSYS软件,模拟了2 mm厚的SUS304钢双层板单面双点焊过程,实测了焊接接头熔核尺寸。结果表明,在预热阶段,上钢板温度较下钢板高,最高温度为356℃,钢板焊接区域均为压应力,而远离该区域则呈现拉应力,随着预热时间增加,上钢板与电极界面处的应力增大,上钢压应力值大于下钢板;在焊接阶段,随着焊接时间增加,焊接区温度迅速上升,峰值温度达到1 655℃,焊接区压应力逐渐减小,最终上下钢板应力分布逐渐趋于均匀。熔核形状模拟结果与实测结果吻合较好,表明所建立的模型可用于SUS304钢单面双点焊过程模拟。
Based on the ANSYS finite element analysis software,the single side double spot welding process of 2 mm thickness SUS304 steel double-layer plate were simulated,and the welding experiment was conducted to observe the nugget size.The results show that, at the preheating stage,the temperature of upper plate was higher than that of lower plate,the highest temperature was356℃,the welding zone was compressive stress,and the area away from the welding zone showed a tensile stress,with the increasing of preheating time,stress on the contact area between the upper plate and electrode surface increased,the compressive stress of upper plate was greater than the lower plate;at welding stage,the temperature of welding zone raised rapidly,the peak temperature reached1655℃,with the increasing of welding time,welding zone compressive stress decreased gradually,finally the stress distribution of plates tended to be uniform.The simulation results of nugget shape were well matched with measured results,which showed that the model could be used for numerical simulation of SUS304 steel single side double spot welding.
出处
《电焊机》
2015年第8期174-178,共5页
Electric Welding Machine
关键词
计算机仿真
双面单点焊
温度场
应力场
computer simulation
single side double spot welding
temperature field
stress field
