Contact Fatigue Analysis of a Dented Surface in a Dry Elastic–Plastic Circular Point Contact

摘要: The present article proposes a methodology for the computational analysis of damage induced in vicinity dents dry circular point contact under repeated rolling. failure risk is evaluated through use Dang Van multiaxial fatigue criterion. dent typical surface defect encountered rolling element bearings when operating contaminated environments. It usually created by solid particle not removed seals or filters passing an EHL conjunction. Since local plasticity occurs debris first entrapped between contacting surfaces, and later resulting are subjected to moving load, elastic–plastic behavior material should be captured model. First, shape subsurface stress strain fields produced presence spherical obtained finite method. Second, load over simulated using semi-analytical code. simulations carried out two different materials, both ductile but one significantly softer than i.e., made stainless steel 316L, other being bearing AISI 52100 similar surfaces. initial states presented. Subsequent after few cycles then Finally effects coefficient friction, residual stress, magnitude highlighted.