Elastohydrodynamic lubrication (EHL) point contact occurs between two rough surfaces at the mesoscopic level, while the interaction of rough surfaces involves contact between asperities at the microscale level. In most cases, the contact between asperities within an interface takes the form of lateral contact rather than peak contact. Regions devoid of contact asperities are filled with lubricating oil. However, conventional models often oversimplify lateral contact forms as interactions between asperities and a smooth, rigid plane. These simplifications fail to accurately represent the true contact conditions and can lead to inaccuracies in the analysis of EHL’s contact performance. To address this issue, we have developed a novel EHL interface model comprising two rough surfaces. This model allows us to explore the influence of asperity height, contact angle, and contact azimuth angle on EHL interface performance.

弹性流体动力润滑（EHL）点接触发生在介观水平上的两个粗糙表面之间，而粗糙表面的相互作用涉及微观水平上粗糙体之间的接触。在大多数情况下，界面内粗糙体之间的接触采用横向接触而不是峰接触的形式。没有接触凹凸的区域充满了润滑油。然而，传统模型通常将横向接触形式过度简化为粗糙体和光滑刚性平面之间的相互作用。这些简化无法准确表示真实的接触条件，并可能导致 EHL 接触性能分析不准确。为了解决这个问题，我们开发了一种包含两个粗糙表面的新型 EHL 界面模型。该模型使我们能够探索粗糙高度、接触角和接触方位角对 EHL 界面性能的影响。