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Article

Fast Prediction for Resistance Spot Welding Deformation Using Inherent Strain Method and Nugget Model

1
JSOL Corp., Tokyo 104-0053, Japan
2
Geely Automobile Research Institute (Ningbo) Co., Ltd., Ningbo 315336, China
3
Joining and Welding Research Institute, Osaka University, Osaka 567-0047, Japan
*
Authors to whom correspondence should be addressed.
Academic Editor: Sergei Yu Tarasov
Materials 2021, 14(23), 7180; https://doi.org/10.3390/ma14237180
Received: 29 September 2021 / Revised: 19 November 2021 / Accepted: 24 November 2021 / Published: 25 November 2021
(This article belongs to the Special Issue Welding and Joining Processes of Materials)
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. View Full-Text
Keywords: resistance spot welding; welding deformation; inherent strain method; inherent deformation; nugget model; finite element method resistance spot welding; welding deformation; inherent strain method; inherent deformation; nugget model; finite element method
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MDPI and ACS Style

Chino, T.; Kunugi, A.; Kawashima, T.; Watanabe, G.; Can, C.; Ma, N. Fast Prediction for Resistance Spot Welding Deformation Using Inherent Strain Method and Nugget Model. Materials 2021, 14, 7180. https://doi.org/10.3390/ma14237180

AMA Style

Chino T, Kunugi A, Kawashima T, Watanabe G, Can C, Ma N. Fast Prediction for Resistance Spot Welding Deformation Using Inherent Strain Method and Nugget Model. Materials. 2021; 14(23):7180. https://doi.org/10.3390/ma14237180

Chicago/Turabian Style

Chino, Takeshi, Atsushi Kunugi, Toshikazu Kawashima, Goro Watanabe, Cao Can, and Ninshu Ma. 2021. "Fast Prediction for Resistance Spot Welding Deformation Using Inherent Strain Method and Nugget Model" Materials 14, no. 23: 7180. https://doi.org/10.3390/ma14237180

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