Auswirkung von Überlasten auf die Schwingfestigkeit widerstandspunktgeschweißter Feinblechstrukturen

For a fatigue assessment of spot welded structures the structural stress approach is preffered in today´s industrial usage. The effects of the overloads could not be considered accurately until now. In this paper a method is presented considering overloads for the fatigue assessment of spot welded joints. Here, calculated R-values for the local radial stress time histories at the circumference of the spot weld assuming elastic-plastic material behavior are considered. The fatigue assessment with this method resulted in good accuracy in comparison with test results