May 4, 2024
University of Bonab
فارسی
Mohammad Ali Mohtadi Bonab

Mohammad Ali Mohtadi Bonab

Academic rank: Associate professor
Address: Department of Mechanical Engineering, University of Bonab, Velayat Highway, Bonab, Iran
Education: Ph.D in Mechanical Engineering
Phone: 04137745000
Faculty: Faculty of Engineering
Department: Mechanical Engineering
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Research

Title
Investigation of Fatigue Crack Propagation in Spot-Welded Joints Based on Fracture Mechanics Approach
Type Article
Keywords
fatigue crack growth, finite element analysis, J-integral, spot weld, stress intensity factor
Researchers Soran Hassanifard، Mohammad Ali Mohtadi Bonab، Ghader Jabbari

Abstract

In this paper, fatigue crack propagation life of resistance spot welds in tensile-shear specimens is investigated based on the calculation of stress intensity factors and J-integral using three-dimensional finite element method. For comparison, experimental works on 5083-O aluminum alloy spot-welded joints have been carried out to verify the numerical predictions of fatigue crack propagation of welded joints. A lot of analyses have been performed to obtain stress intensity factors and J-integral in tensile-shear specimens of spot-welded joints by using commercial software ANSYS. These gathered data have been formulated by using statistical software SPSS. The results of fatigue propagation life and predicted fatigue crack path revealed very good agreement with the experimental fatigue test data and photograph of cross-section of the fatigued spot-weld specimens.
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