Abstract:Based on the assumption that the transitions from elastic,through elasticplastic,to fully plastic deformation of a contacting asperity is continuous and smooth,a novel elasticplastic contact model considering the effect of frictional tangential stress was presented.Compared with ZMC and GW models,it is found that the real contact area predicted by the present model is smaller than that predicted by ZMC and GW models at the low plasticity index and contact load.However with the increase of contact load,the real contact area predicted by the present model becomes larger than that predicted by ZMC and GW models.At high plasticity index,the real contact area predicted by the present model is larger than that predicted by ZMC and GW models even at low contact load.The difference of the predicted results based on the three models is increased with the increase of the contact load.The critical contact load that the real contact area predicted by the present model exceeds that predicted by ZMC and GW models is decreased with the increase of plasticity index.