Plasticity-induced damage and material loss in oscillatory contacts

Knowledge of plasticity-induced damage leading to the loss material in oscillatory contacts is paramount importance various electromechanical systems comprising contact-mode elements exposed high-frequency vibrations. However, experimental investigation wear behavior devices experiencing microscopic contact (fretting) complex, time consuming, and expensive. More importantly, progression critical processes, such as decrease material’s strength with accumulation plastic deformation vicinity interface removal form debris, cannot be tracked real time, necessitating cumbersome costly post-testing microanalysis. Alternatively, computational modeling more effective than experiments can provide valuable insight into effect important parameters, load, coefficient friction, oscillation amplitude, behavior, on during sliding contact. Accordingly, principal objective this study was introduce a approach, which used analyze due mechanical components. To achieve aim, plane-strain finite element model rigid cylinder reciprocating an elastic-plastic half-space exhibiting isotropic strain hardening how evolution plasticity leads material. A quasi-static, isothermal based ductile failure criterion implemented analysis simulate fully damaged elements. Numerical results illuminate effects load friction development plasticity, cumulative damage, accruing cycles. The deviation from classical theory high-load simulations explained by shear distribution less slip at encountered high loads. novelty methodology, sheds light provides capability for assessing performance components operating mode.