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首页> 外文期刊>Tribology letters >Modeling Sliding Contact of Rough Surfaces with Molecularly Thin Lubricants
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Modeling Sliding Contact of Rough Surfaces with Molecularly Thin Lubricants

机译：用分子稀薄的润滑剂模拟粗糙表面的滑动接触

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摘要

The sliding contact between two rough surfaces in the presence of a molecularly thin lubricant layer is investigated. Under very high shear rates, the lubricant is treated as a semi-solid layer with normal and lateral shear-dependent stiffness components obtained from experimental data. The adhesive force in the presence of lubricant is also adapted from the Sub-boundary lubrication model and improved to account for variation in surface energy with penetration into the lubricant layer. A model is then proposed, based on the Improved sub-boundary lubrication model, which accounts for lubricant contact and adhesion and its validity is discussed. The model is in good agreement with published experimental measurements of friction in the presence of molecularly thin lubricant layers and suggests that a molecularly thin lubricant bearing could be successfully used to reduce solid substrate damage at the interface.
机译：研究了在存在分子薄的润滑剂层的情况下两个粗糙表面之间的滑动接触。在非常高的剪切速率下，润滑剂被视为具有从实验数据获得的法向和横向剪切相关的刚度分量的半固体层。润滑剂存在下的粘合力也可以从次边界润滑模型中进行调整，并加以改进以解决表面能随渗透到润滑剂层中的变化。然后，基于改进的次边界润滑模型，提出了一个模型，该模型考虑了润滑剂的接触和粘附，并讨论了其有效性。该模型与已公开的在分子薄的润滑剂层存在下的摩擦力的实验测量结果非常吻合，并且表明分子薄的润滑剂轴承可以成功地用于减少界面处的固体基材损伤。

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