Abstract
The stress intensity factors of a randomly oriented crack emanating from an inclusion in a half space are analyzed under rolling/sliding contact with frictional heat. The complex variable formulation of Muskhelishivili is used to reduce the problem to the simultaneous integral equations. These integral equations are solved numerically thus enabling the numerical calculation of the stress intensity factors. On the basis of these results, the location and direction of initial crack growth emanating from an inclusion are predicted numerically for the case of high carbon-chromium bearing steel. The initial crack growth is assumed to be determined by applying the maximum energy release rate criterion to randomly oriented crack emanating from an inclusion. The effects of frictional coefficient, slide/roll ratio and depth of inclusion on the location and direction of initial crack growth are considered.
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