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  • Pitting in lubricated rolling and sliding contact
    Fajdiga, Gorazd ; Flašker, Jože ; Ulbin, Miran
    Mechanical elements subjected to rolling and sliding contact conditions can fail by several mechanisms, and the most prominent among these is surface pitting. A new computational model for the ... simulation of the surface initiated crack propagation in the lubricated contact area that leads to surface pitting of mechanical components is presented in this paper. The discretised equivalent contact model, with the assumed size and orientation of the initial crack, is subjected to contact loading, accounting for the elast-hydro-dynamic lubrication effects and tangential loading due to sliding. The influence of a lubricating fluid, driven into the crack by the hydraulic mechanism, is also considered. The virtual crack extension method is used for crack proagation simulations within the FEM analysis. The model is applied to a real pitting problem of a gear. The computational results in terms of pit sizes correlate well to the development of micro pits observed in experimental testing.
    Vir: Inženýrská mechanika = Engineering Mechanics. - ISSN 1210-2717 (Vol. 11, no. 2, 2004, str. 125-138)
    Vrsta gradiva - članek, sestavni del
    Leto - 2004
    Jezik - angleški
    COBISS.SI-ID - 8864022

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