Browse Publications Technical Papers 2003-01-2809
2003-10-27

A New Method of Stress Calculation in Spot Welded Joint and Its Application to Fatigue Life Prediction of Actual Vehicle 2003-01-2809

A method of fatigue life prediction of spot welded joint under multi-axial loads has been developed by fatigue life estimation working groups in the committee on fatigue strength and structural reliability of JSAE. This method is based on the concept of nominal structural stress ( σ ns) proposed by Radaj and Rupp, and improved so that D value is not involved in stress calculation. The result of fatigue life estimation of actual vehicle with nominal structural stress which was calculated through newly developed method had very good correlation with the result of multi-axial loads fatigue test carried out with test piece including high strength steel.

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