Abstract: A two-body micro-cutting wear model is independently introduced taking into account the sough ness of both hard and soft surfaces. It is very convenient to predict the wear roughness of a soft surface by the model, because the model directly uses the profile height distribution density function, which can be easily obtained by using the widely used profile measuring technique. Numerical examples are given for the changes of the wear and roughness of soft surfaces during wear under constant loads. The results agree quantitatively with experimental observations.

Key words: 粗糙表面, 磨料磨损