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  • Numerical modelling of crack growth in a gear tooth root
    Podrug, Srđan ; Glodež, Srečko ; Jelaska, Damir
    A computational model for determination of crack growth in a gear tooth root is presented. Two loading conditions are taken into account: (i) normal pulsating force acting at the highest point of the ... single tooth contact and (ii) the moving load along the tooth flank. In numerical analysis it is assumed that the crack is initiated at the point of the largest stresses in a gear tooth root. The simple Paris equation is then used for a further simulation of the fatigue crack growth. The functional relationship between the stress intensity factor and crack length K=f(a), which is needed for determining the required number of loading cycles N for a crack propagation from the initial to the critical length, is obtained using a displacement correlation method in the framework of the FEM-method considering the effect of crack closure. The model is used for determining fatigue crack growth in a real gear made from case carburised and ground steel 14CiNiMo13-4, where the required material parameters were determined previously by appropriate test specimens. The results of the numerical analysis show that the prediction of crack propagation live and crack path in a gear tooth root are significantly different for both loading conditions considered.
    Vir: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 57, no. 7/8, jul.-avg. 2011, str. 579-586)
    Vrsta gradiva - članek, sestavni del
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 18575368

    Povezava(-e):

    Digitalna knjižnica Univerze v Mariboru – DKUM
    Digitalna knjižnica Slovenije - dLib.si
    DOI

vir: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 57, no. 7/8, jul.-avg. 2011, str. 579-586)

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