The prediction of friction under elastohydrodynamic lubrication (EHL) conditions remains one of the most important and controversial areas of tribology. This is mostly because the pressure and shear rate conditions inside EHL contacts are particularly severe, which complicates experimental design. Over the last decade, molecular dynamics (MD) simulation has played an increasingly significant role in our fundamental understanding of molecular behaviour under EHL conditions. In recent years, MD simulation has shown quantitative agreement with friction and viscosity results obtained experimentally, meaning that they can, either in isolation or through the use of multiscale coupling methods, begin to be used to test and inform macroscale models for EHL problems. This is particularly useful under conditions that are relevant inside machine components, but are difficult to obtain experimentally without uncontrollable shear heating.

弹性流体动力润滑（EHL）条件下的摩擦力预测仍然是摩擦学中最重要和最具争议的领域之一。这主要是因为EHL触点内部的压力和剪切速率条件特别苛刻，这使实验设计变得复杂。在过去的十年中，分子动力学（MD）模拟在我们对EHL条件下分子行为的基本了解中起着越来越重要的作用。近年来，MD模拟已经显示出与通过实验获得的摩擦和粘度结果的定量一致性，这意味着它们可以孤立地或通过使用多尺度耦合方法开始用于测试和告知EHL问题的宏观模型。这在与机器内部零件相关的条件下特别有用，