This paper describes a simple model to handle nonproportional fatigue of welded joints under multiaxial variable amplitude loading. The new damage parameter is essentially the weld-toe equivalent stress amplitude, modified by a multiaxial Morrow mean stress correction factor, and a measure of material sensitivity and strength of the nonproportional loading path within a cycle. It is based on Sonsino's “Effective Equivalent Stress Hypothesis” model. The new model is able to utilize multiaxial variable amplitude PG (Proving Grounds) load data through the use of weld-toe stress concentration factors and the Wang-Brown multiaxial reversal counting technique.


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    Titel :

    A Stress-based Nonproportional Fatigue Model for Welded Joints Under Variable Amplitude Loading


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Jordan, Algernon (Autor:in) / Tjhung, Tana (Autor:in) / Lee, Yung-Li (Autor:in)

    Kongress:

    SAE 2006 World Congress & Exhibition ; 2006



    Erscheinungsdatum :

    2006-04-03




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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