Variable amplitude torsion, bending, and combined torsion and bending fatigue tests were performed on an axle shaft. The moment inputs used were taken from the respective history channels of a cable log skidder vehicle axle. Testing results indicated that combined variable amplitude loading lives were shorter than the lives of specimens subjected to bending or torsion alone. Calculations using strain rosette readings indicated that principle strains were most active around specific angles but also occurred with lesser magnitudes through a wider angular range. Over the course of a biaxial test, cyclic creep narrowly limited the angles and magnitudes of the principal strains. This limitation was not observed in the calculated principal stress behavior. Simple life predictions made on the measured strain gage histories were non-conservative in most cases. Evidence also indicated that small cycles from the variable amplitude history - those cycles below the expected fatigue limit - were causing fatigue damage.


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    Titel :

    Biaxial Torsion-Bending Fatigue of SAE Axle Shafts


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Chu, C.-C. (Autor:in) / Conle, F.A. (Autor:in) / Bonnen, J.J.F. (Autor:in)

    Kongress:

    International Congress & Exposition ; 1991



    Erscheinungsdatum :

    1991-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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