该文建立无润滑条件下滑动接触模型,考察相对滑动过程中摩擦热的产生以及传导,并研究了工程实际中对胶合、磨损、局部塑性变形有重要影响的局部温升。利用快速Fourier变换,求解L ap lace热传导方程,获得了光滑及粗糙表面的瞬时温升,以及接触体的体内各离散点的温度,从而得到半无限体干接触的温度场。结果表明:局部接触压力和摩擦因数以及相对滑动速度是和摩擦热直接相关的3个参数,在相同载荷下的粗糙峰表面接触处的瞬时温升远高于光滑表面接触处的温升。 In this paper, the sliding contact model without lubrication is established to investigate the generation and conduction of frictional heat in the process of relative sliding, and the local temperature rise that has an important influence on the bonding, wear and local plastic deformation in engineering practice is studied. The fast Fourier transform is used to solve the Laplace thermal conductivity equation, and the instantaneous temperature rise of the smooth and rough surface and the temperature of each discrete point in the body are obtained. The results show that the local contact pressure, the friction coefficient and the relative sliding speed are three parameters directly related to the frictional heat. The instantaneous temperature rise at the contact of the rough surface under the same load is much higher than that at the smooth surface.