An empirical Three Stage Initiation-Propagation (TSIP) model has been developed which predicts the fatigue resistance of tensile-shear spot welds under constant amplitude loading. The improvements of tensile-shear spot weld fatigue resistance caused by changes in weld geometry, residual stresses and material properties variables are discussed with the aid of the model. The TSIP model suggests that, in addition to the influence of geometry, residual stresses at the site of crack initiation greatly influence the fatigue resistance of tensile-shear spot welds. The TSIP model predicts that material properties play a subtle role in determining the fatigue resistance of tensile-shear spot welds.
A Fatigue Life Prediction Method for Tensile-Shear Spot Welds
Sae Technical Papers
SAE International Congress and Exposition ; 1985
1985-02-01
Conference paper
English
A fatigue life prediction method for tensile-shear spot welds
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