Abstract An approach for mixed elastohydrodynamic lubrication (EHL) analysis of line contact with non-Gaussian rough surface is proposed, and a minimum film thickness formula is derived based on the simultaneous solutions. The Patir and Cheng's average flow model and Kogut and Etsion's rough surface contact model is used to obtain hydrodynamic pressure and asperity pressure. The effect of non-Gaussian rough surface on pressure, film thickness and asperity-to-total load ratio are studied. It is observed that the influence of kurtosis on pressure and film thickness is slight. Both skewness and kurtosis have strong effect on asperity-to-total load ratio. Lastly, a minimum film thickness is derived and expresses as a function of dimensionless load, speed, material, standard deviation and skewness.

中文翻译：

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具有非高斯表面粗糙度的线接触混合弹流润滑分析

摘要 提出了一种非高斯粗糙表面线接触的混合弹流润滑(EHL)分析方法，并基于同时解推导了最小油膜厚度公式。Patir 和 Cheng 的平均流动模型以及 Kogut 和 Etsion 的粗糙表面接触模型用于获得流体动压和粗糙面压力。研究了非高斯粗糙表面对压力、薄膜厚度和粗糙度与总载荷比的影响。观察到峰度对压力和膜厚的影响很小。偏度和峰度对粗糙度与总载荷比都有很大的影响。最后，导出最小薄膜厚度并将其表示为无量纲载荷、速度、材料、标准偏差和偏斜度的函数。