点焊
焊接
变形(气象学)
材料科学
电阻焊
机械工程
结构工程
冶金
复合材料
工程类
作者
Takeshi Chino,Atsushi Kunugi,Toshikazu Kawashima,Goro Watanabe,Cao Can,Ninshu Ma
出处
期刊:Materials
[MDPI AG]
日期:2021-11-25
卷期号:14 (23): 7180-7180
被引量:1
摘要
In a car body, there exist thousands of resistance spot welds, which may induce large deformation during the manufacturing process. Therefore, it is expected that automotive industries will develop a method and a computing system for the fast and simple prediction of its deformation. Although the inherent strain method has been used for the fast prediction of arc welding deformation, it has not been applied to resistance spot welding so far. Additionally, the electrical-thermal-mechanical coupling analysis for the deformation induced by resistance spot welding is complicated and much more time-consuming. Therefore, in this study, a nugget model of the resistance spot weld has been developed, and the inherent strain method is extended for use in the fast prediction of resistance spot welding deformation. In addition, the deformation of a vehicle part with 23 resistance spot welds was efficiently predicted within around 90 min using the inherent strain method, displaying good accuracy compared with the measurement.
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