Modeling the Accumulation of Contact Fatigue Damage in Materials with Residual Stresses under Rolling Friction

Resumo

The effect of residual stresses that arise during the treatment of friction-pair surfaces by various techniques on the rate of damage accumulation caused by contact fatigue is considered for cyclic loading of bodies under rolling friction. It is assumed that the rate of damage accumulation is a function of the peak values of the principal shear stresses that arise in the surface layers of the material under deformation. The influence of the relative slippage, sliding friction coefficients, and value of residual stresses on the distribution of the peak values of the principal shear stresses is analyzed. The results are used to study the effect of the residual stress field in the subsurface layers of the material due to surface treatment on the rate of damage accumulation from contact fatigue.