Journal of Shanghai Jiaotong University ›› 2019, Vol. 53 ›› Issue (5): 616-623.doi: 10.16183/j.cnki.jsjtu.2019.05.015

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Simulation on Mechanical Properties of Resistance Element Welding of Aluminum and Steel

HE Guanzhong,LOU Ming,MA Yunwu,LI Yongbing   

  1. State Key Laboratory of Mechanical System and Vibration; Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, Shanghai Jiao Tong University, Shanghai 200240
  • Online:2019-05-28 Published:2019-05-28

Abstract: The mechanical properties of resistance element welding (REW) joints are decided by both effects of fusion welding and mechanical joining. The mechanical properties of REW for aluminum alloy to steel could be effectively studied by three-dimensional finite-element (FE) models. The modeling input consists of cross-section profile of joint observed by metallography, and stress-strain parameters of regional materials obtained by hardness test and empirical formula. Based on this new modeling method, the geometrical evolution and stress distribution during the mechanical testing of REW joints are studied systematically. Via comparing with parallel experimental results, the failure mode of REW joints is analyzed, which provides useful reference to understand the failure mechanism of REW joints.

Key words: resistance element welding, dissimilar material joining, mechanical properties, finite-element model, lap-shear performance, coach-peel performance

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