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Development of Plasma Arc Spot Welding Process and Finite Element Method Analysis Model for Predicting Fracture Strength: Part 2—Development of Finite Element Method Analysis Model for Predicting Fracture strength

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Abstract

When the welded part of a vehicle body is considered in an analysis model, the accuracy of the analysis varies depending on whether the welded part is assumed to be a simple rigid body or if its characteristics are included. Particularly, when assuming a simple rigid body, the accuracy of the stress result may be insufficient, resulting in a large error. In this study, titled “part 2-development of finite element method (FEM) analysis model for predicting fracture strength”, a commercial welding simulation program, MSC Simufact welding software, was used to create a finite element method analysis model that includes the material characteristics of the welded part, and the analysis accuracy was determined in comparison with the experimental results presented in part 1. The analysis results showed satisfactory results with an error rate of 0.03%. Thus, the fracture strength and fracture position of the welding specimen could be confirmed using the FEM analysis model. Additionally, assuming that the welded part in spot welding has a simple geometric-shaped structure, a simplification spot welding model was created to determine whether it can replace the plasma arc spot welding experiment and pass the tensile shear test.

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Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No.2021R1A4A1033141) and (No.2021R1F1A106-4238).

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Authors and Affiliations

  1. School of Mechanical Engineering, Chungbuk National University, Cheongju, 28644, Korea

    Geonho Lee, Hansol Kim, Jongho Jeon, Sangjun Han, Sangwoo Han & Jungho Cho

Authors
  1. Geonho Lee
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  2. Hansol Kim
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  3. Jongho Jeon
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  4. Sangjun Han
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  5. Sangwoo Han
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  6. Jungho Cho
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Contributions

All authors contributed to this paper. Simulation were performed by Geonho Lee, Hansol Kim, Jongho Jeon, and Sangjun Han. Data analysis and result considerations were performed by Geonho Lee, Sang-Woo Han, and Jungho Cho. The first draft of the manuscript was written by Geonho Lee, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Jungho Cho.

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Lee, G., Kim, H., Jeon, J. et al. Development of Plasma Arc Spot Welding Process and Finite Element Method Analysis Model for Predicting Fracture Strength: Part 2—Development of Finite Element Method Analysis Model for Predicting Fracture strength. Int. J. Precis. Eng. Manuf. 24, 13–23 (2023). https://doi.org/10.1007/s12541-022-00706-2

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  • DOI: https://doi.org/10.1007/s12541-022-00706-2

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