In mixed lubrication, material wear is inevitably caused due to solid contact. Simultaneously, the surface morphology after wear will affects the lubrication performance. To understand this coupling process, virtual surface reconstruction technology and mixed lubrication sliding wear model were applied to predict the evolution of wear characteristics and lubrication characteristics during wear in this study. The effects of the roughness root mean square (RMS), roughness direction and wavelength ratio on the contact area ratio, the contact load ratio, accumulated wear, film thickness and the friction coefficient were analysed. The results indicated that the contact area ratio and the contact load ratio and the friction coefficient decreased and average film thickness increased with the increase in the number of the wear cycles. In addition, a surface with low-roughness RMS, longitudinal roughness texture and high-wavelength ratio is suitable for improving lubrication performance and reducing wear.

中文翻译：

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混合润滑滑动磨损过程中非高斯粗糙表面的摩擦学特性预测

在混合润滑中，由于固体接触不可避免地会引起材料磨损。同时，磨损后的表面形貌也会影响润滑性能。为了理解这种耦合过程，本研究采用虚拟表面重建技术和混合润滑滑动磨损模型来预测磨损过程中磨损特性和润滑特性的演变。分析了粗糙度均方根（RMS）、粗糙度方向和波长比对接触面积比、接触载荷比、累积磨损、油膜厚度和摩擦系数的影响。结果表明，随着磨损循环次数的增加，接触面积比、接触载荷比和摩擦系数减小，平均膜厚增加。此外，