In recent years, the efforts to better control friction and wear have focused on surface topography modification through surface texturing. To study the mutual influence of surface roughness and texture features, this paper developed one comprehensive mathematical model of mixed lubrication to study the tribological performance of the rough-textured conjunction. The typical ring-liner conjunction was chosen as the research object. In particular, the effects of skewness and kurtosis were considered based on the non-Gaussian distribution of asperity height. In this way, the influences of non-Gaussian distribution properties and surface texturing on the tribological performance were analyzed. The results show that the influences of skewness and kurtosis on the tribological performance are nontrivial and should not be neglected in the mixed lubrication. Compared to the Gaussian distribution, considering the non-Gaussian distribution can represent the physical rough surfaces more accurately. Surfaces with negative skewness were found to generally result in better tribological properties. Moreover, the tribological performance improved by surface texturing can also be improved or reduced by the effect of skewness and kurtosis. As a result, the optimization of surface texturing should take the effects of roughness parameters into account.

中文翻译：

---

粗糙纹理表面的表面粗糙度和纹理特征对摩擦学性能的相互影响研究

近年来，更好地控制摩擦和磨损的努力集中在通过表面纹理化来改变表面形貌。为了研究表面粗糙度和纹理特征的相互影响，本文开发了一种混合润滑的综合数学模型来研究粗糙纹理结合的摩擦学性能。选择典型的环形线连接作为研究对象。特别是，基于凹凸高度的非高斯分布考虑了偏度和峰度的影响。通过这种方式，分析了非高斯分布特性和表面纹理对摩擦学性能的影响。结果表明，偏度和峰度对摩擦学性能的影响是重要的，在混合润滑中不容忽视。与高斯分布相比，考虑非高斯分布可以更准确地表示物理粗糙表面。发现具有负偏度的表面通常会产生更好的摩擦学特性。此外，通过表面织构改善的摩擦学性能也可以通过偏度和峰度的影响来改善或降低。因此，表面纹理的优化应考虑粗糙度参数的影响。发现具有负偏度的表面通常会产生更好的摩擦学特性。此外，通过表面织构改善的摩擦学性能也可以通过偏度和峰度的影响来改善或降低。因此，表面纹理的优化应考虑粗糙度参数的影响。发现具有负偏度的表面通常会产生更好的摩擦学特性。此外，通过表面织构改善的摩擦学性能也可以通过偏度和峰度的影响来改善或降低。因此，表面纹理的优化应考虑粗糙度参数的影响。