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    A New Approach to the Prediction of the Fretting Fatigue Life that Considers the Shifting of the Contact Edge by Wear

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    In fretting fatigue the contact edge will shift inward due to wear. The effect of this shifting on crack propagation behavior is considered here for accurate prediction of fretting fatigue life. The stress intensity factor(K) for cracking due to fretting fatigue was calculated by using contact pressure and frictional stress distributions, which were analyzed by the finite element method. The S-N curves for fretting fatigue were predicted by using the relationship between the calculated stress intensity factor range (ΔK) and the crack propagation rate (da/dN) obtained using CT specimens. Fretting fatigue tests were performed on Ni-Mo-V steel specimens. The S-N curves of experimental results were in good agreement with the analytical results obtained by considering the shifting of the contact edge.


    crack initiation, wear extension, crack propagation, stress intensity factor, stress singularity parameters

    Author Information:

    Hattori, T
    Chief Researcher, Hitachi Ltd., Tsuchiura, Ibaraki,

    Nakamura, M
    Researcher, Hitachi Ltd., Tsuchiura, Ibaraki,

    Watanabe, T
    Chief Engineer, Hitachi Works, Hitachi Ltd., Hitachi, Ibaraki,

    Committee/Subcommittee: E08.06

    DOI: 10.1520/STP14719S