転がりすべり接触による半無限体内部き裂と介在物または空孔の干渉効果

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This paper deals with the analysis of the stress intensity factors of a subsurface crack on the periphery of a rigid inclusion on a circular void in an elastic half space subjected to rolling contact with frictional heat. Rolling contact is simulated as a line load with both normal and shear components, moving with constant velocity over the surface of the half space. A frictional heat input in the contact region is included to incorporate the thermal loading. The complex variable formulation of Muskhelishivili is used to reduce the problem for the crack and the inclusion or void to the simulutaneous singular integral equations. This integral equation is solved numerically thus enabling the numerical calculation of stress intensity factors on the periphery of an inclusion or a void in a half space. The influences of changing the frictional coefficient, slide/roll ratio and the crack length on the interference effects between a subsurface crack and an inclusion or a void are considered.
2010-11-25