FINITE-ELEMENT ANALYSIS OF ROLLING-CONTACT FOR NONLINEAR KINEMATIC HARDENING BEARING STEEL

A Mroz image point, two surface, nonlinear-kinematic-hardening-plastic (MNKP) representation of bearing steel is inserted into a finite elem ent model of 2-dimensional, line contact for pure rolling. The calcula tions are compared with previous results for the same con tact pressur e derived for elastic-linear-kinematic-hardening-plastic (ELKP) behavi or. The residual stress, deformation, and the connection between conti nuing cyclic deformation, etching bands, and cracks are analyzed. Unli ke the ELKP constitutive properties, the MNKP behavior displays a dist inct transient region which results in higher residual stresses.