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Fatigue Life Prediction of Spot-Welded Structures: A Finite Element Analysis Approach

M. M., Rahman and R. A., Bakar and M. M., Noor and M. R. M., Rejab and M. S. M., Sani (2008) Fatigue Life Prediction of Spot-Welded Structures: A Finite Element Analysis Approach. European Journal of Scientific Research, 22 (3). pp. 444-456. ISSN ISSN 1450-216X


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This study presents the effect of the spot weld and sheets thickness on the fatigue life of the of the spot-weld joints to predict the lifetime and location of the weakest spot-welds due to the variable amplitude loading conditions. A simple model was used to illustrate the technique of spot-weld fatigue analysis. Finite element model and analysis were carried out utilizing the finite element analysis commercial codes. Linear elastic finite element analysis was carried out to predict the stress state along the weld direction. It can be seen from the results that the predicted life greatly influence the sheet thickness, nugget diameter and loading conditions of the model. Acquired results were shown the predicted life for the nugget and the two sheets around the circumference of the spot-weld at which angle the worst damage occurs. The spot-welding fatigue analysis techniques are awfully essential for automotive structure design.

Item Type: Article
Additional Information: Prof. Dr. Md Mustafizur Rahman (M. M. Rahman) Prof. Dato’ Dr. Rosli Abu Bakar (R. A. Bakar) Dr. Mohd Ruzaimi Mat Rejab (M. R. M. Rejab) Muhamad Mat Noor (M. M. Noor) Mohd Shahrir Mohd Sani (M. S. M. Sani)
Uncontrolled Keywords: Sot-weld structure, finite element analysis, spot diameter, sheet thickness, variable amplitude loading
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Pn. Hazlinda Abd Rahman
Date Deposited: 21 Jun 2011 01:31
Last Modified: 23 Jan 2018 03:29
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