Abstract:For the mechanism of abrasive wear,the wear debris was modeled with both spherical and the likely fractal debris.For the sliding process of abrasive wear,the temperature variation and thermal stress distribution and its changes with the substrate depth were studied with the finite element software ANSYS.The results of the two models were comparatively studied.The results demonstrate that,in the spherical model,the temperature of spherical debris is higher,and the temperature of the contact body is remarkably lower than the former.The distributions of Mises stress and shear stress in the contact zone between the debris and the contact surface widely span in the two substrates.However,in the fractal model,the temperature of the contact body is lower,and the temperature of fractal debris is far lower than the former,and the distributions of Mises stress and shear stress at the contact area between the debris and the contact surface are more concentrated,and the corresponding maximum stress is higher than that of the spherical debris model.