Effect of welding pressure on mechanical properties of resistance spot welding joint

被引：7
|
作者：
尹孝辉 [1 ,2 ]
何国强 [2 ]
刘思含 [2 ]
崔梦栓 [1 ,2 ]
胡磊 [1 ,2 ]
崔冰 [1 ,2 ]
机构：
[1] Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials,Anhui University of Technology
[2] School of Materials Science and Engineering,Anhui University of Technology
来源：
China Welding | 2020年 / 29卷 / 03期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
TG453.9 [];
学科分类号：
080201 ; 080503 ;
摘要：
To investigate the factors affecting the quality of solder joints which would be available for the practical production, an axisymmetric finite element model of the resistance spot welding process simulated by Sysweld finite element software was established for a DP980 steel plate with a thickness of 1 mm. By simulating the formation process of spot welding nuggets, the distribution characteristics of temperature field and stress field in the process of spot welding heating and cooling can be studied to determine the nugget diameter and shear strength index. The results showed that the shear force of the spot-welding joint was affected by the structure, and the nugget diameter was non-linear relationship to the shear performance. For the DP980 spot welding joint, the critical nugget diameter of the IF fracture mode to PF fracture mode was 4.695 mm, and the maximum value of nugget diameter and residual stress decreased to different degrees with the increase of welding pressure.
引用
收藏
页码：33 / 38
页数：6
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