金属摩擦磨损表面的分形特性

The Fractal Character of Friction-Worn Metal Surface

研究了滑动摩擦学系统中金属的粘着磨损表面，利用结构函数法分析了磨损面在垂直于滑动方向上轮廓线的分形特性。结果表明：在本研究的尺度范围内，不同磨程时磨损面的轮廓线都具有分形结构，不同磨损阶段轮廓线的分形参数是不同的，轮廓线的分维Ｄ与其支承长度率曲线的性质有关。

The adhesionworn metal surface in a sliding tribo-system was investigated, its fractal character was analysed using structure function method. It is shown that the profiles of this worn surface in different sliding distances were all fractal within the range of the length scale investigated in this paper, the fractal parameters of these profiles were variable in different wear stages. The fractal dimension D of a profile was related with the character of its Abbott curve.