Abstract
This paper proposed the construction methodology of spot weld failure model for a crash simulation based on the experiments and the simulations which is called a hybrid method. The test procedure was designed to obtain the failure load of a spot weld under combined loading conditions. The failure surface is determined based on bending moment, normal force and shear force. Those components acting on the spot welded part are obtained from finite element analysis results, which are defined by the real experimental conditions. The proposed failure surface was constructed based on Wung [Wung, Exp Mech 41, 107–113, 2001; Wung et al., Exp Mech 41, 100–106, 2001] model except torsion term. It was found that the failure surface of mild steel was expressed as a function of previous researches, however failure surface of high strength steels and advanced high strength steels were different shape from previous research results. The proposed failure criterion is well-estimated for specimen levels such as cross tension, loading angle of 30°, loading angle of 45°, coach-peel and lap-shear tests.
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Ha, J., Lim, JH., Oh, CY. (2017). Construction Procedure of Spot Weld Failure Model for Crash Simulation. In: Zhu, Y., Zehnder, A. (eds) Experimental and Applied Mechanics, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-42028-8_9
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DOI: https://doi.org/10.1007/978-3-319-42028-8_9
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