A Fully Coupled Normal and Tangential Contact Model to Investigate the Effect of Surface Roughness on the Partial Slip of Dissimilar Elastic Materials

Abstract By adopting a global search method for all shear tractions in the contacting area and using an alternative convergence criterion regarding load balance lateral direction, newly developed algorithm provides stable solutions to partial-slip problems of elastically dissimilar materials. The model is validated via comparison between simulation literature results sphere-on-flat problem under fully coupled conditions. It then employed investigate influence surface roughness parameters including root mean square (RMS) RMS slope on Since gross sliding condition modified coupling effects, relationship ratio stick (stick ratio) tangential case, unlike that uncoupled one, becomes non-linear tested rough surfaces. Under low or medium loads, with higher gradient lower experiences more regions within area. This trend irregular at loads.