Fatigue Damage of Aluminum Alloy Spot-Welded Joint Based on Defects Reconstruction
Source abstract
Abstract
Abstract Three-dimensional (3D) reconstruction and finite element method are combined to study the damage behavior of aluminum alloy resistance spot-welded joints. Fatigue damage of spot-welded joints under different cyclic loading stages was obtained by X-ray microcomputed tomography (X-ray micro CT). Then, avizo software was used to reconstruct the scanned data of joints with different damage degrees, and the distribution and variation of defects in the joints are obtained. On this basis, 3D finite element damage models were established. Finite element calculations were carried out to analyze the fatigue damage of spot-welded joints by adopting the effective elastic modulus as the damage parameter. The results show that the effective elastic modulus is consistent with the experimental results. The method of combining 3D reconstruction with the finite element method can be used to evaluate the internal damage of spot-welded joints and provide theoretical basis for the prediction of fatigue life.
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Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Fatigue and fracture mechanics · Non-Destructive Testing Techniques
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Affiliations
School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Songjiang District, Shanghai 201620, China
Funding
Shanghai Education Development Foundation · Shanghai Municipal Education Commission · Natural Science Foundation of Shanghai
References (25)
Show source-provided references
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