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Experimental tests have shown that misalignment can reduce the fatigue strength of welded joints significantly. Further theoretical investigations are also required to understand the behavior of these joints. In this paper, the boundary element technique together with the hypersingular boundary integral equation are employed to estimate the notch stress concentration factors at the surface. These are then used to predict the fatigue life. The addressed variable is the root crack length, or parallel penetration depth, which can be accurately modeled by the boundary element method. It is shown that there is a good correlation between the previous experimental results and the present theoretical results.
Experimental tests have shown that misalignment can reduce the fatigue strength of welded joints significantly. Further theoretical investigations are also required to understand the behavior of these joints. In this paper, the boundary element technique together with the hypersingular boundary integral equation are employed to estimate the notch stress concentration factors at the surface. These are then used to predict the fatigue life. The addressed variable is the root crack length, or parallel penetration depth, which can be accurately modeled by the boundary element method. It is shown that there is a good correlation between the previous experimental results and the present theoretical results.
Computer prediction of misaligned welded joints
Advances in Engineering Software ; 31 ; 65-74
2000
10 Seiten, 9 Quellen
Article (Journal)
English
Fatigue Strength Prediction for Misaligned Welded Joints by Stress Field Intensity Method
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