Constitutive relation for the friction between lubricated surfaces
Constitutive relation for the friction between lubricated surfaces
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DOI：
10.1103/physreve.53.4153
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发表时间：
1996-04-01
影响因子：
2.4
通讯作者：
Batista, AA
中科院分区：
文献类型：
--
作者：
Carlson, JM;Batista, AA
受最近实验和数值结果的启发，我们提出了一种本构关系来描述由原子级薄层润滑分子隔开的两个表面之间的摩擦。我们的唯象方法涉及速率和状态定律的发展来描述系统的宏观摩擦性质，其方式类似于先前由Ruina [J. Geophys. Res. 88，10 359（1983）]用于固体上固体的情况。在我们的情况下，状态变量被解释为剪切熔化的润滑剂，和本构关系捕获的干燥和润滑系统之间的一些主要的实验差异。
Motivated by recent experiments and numerical results, we propose a constitutive relation to describe the friction beween two surfaces separated by an atomically thin layer of lubricant molecules. Our phenomenological approach involves the development of a rate and state law to describe the macroscopic frictional properties of the system, in a manner similar to that which has been proposed previously by Ruina [J. Geophys. Res. 88, 10 359 (1983)] for the solid on solid case. In our case, the state variable is interpreted in terms of the shear melting of the lubricant, and the constitutive relation captures some of the primary experimental differences between the dry and lubricated systems.