Ultra-thin lubricating films under transient conditions
Ultra-thin lubricating films under transient conditions
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瞬态条件下的超薄润滑膜
DOI：
10.1088/0022-3727/34/17/307
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
H. Rahnejat
中科院分区：
文献类型：
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作者：
M. F. Al;H. Rahnejat
本文讨论了反形式集中圆点接触下超薄连接中液膜润滑的机理。强调了挤压膜作用对提高承载能力的重要意义。在球对平滚道的加减速运动中所作的数值预测与其他研究人员对极性支链润滑剂的实验结果一致，直至膜厚在20 nm左右。这种与实验结果的一致性使得人们对薄膜形成的多物理场有了基本的理解，当使用非极性润滑剂时，促进了几纳米量级的超薄薄膜的形成。本文首次给出了瞬态条件下粘性力、表面力和分子力共同作用的解。
The mechanism of fluid film lubrication in ultra-thin conjunctions under counterformal concentrated circular point contacts is discussed in this paper. The significance of squeeze film action in increased load carrying capacity is highlighted. The numerical predictions made in acceleration-deceleration motion of a ball against a flat race is found to conform with the experimental findings of other research workers for polar branched lubricants down to a film thickness in the region of 20 nm. This conformance with the experimental findings has enabled a fundamental understanding of the multi-physics of film formation when conditions promoting the formation of ultra-thin films of the order of few nanometres have been employed, with the use of a non-polar lubricant. This paper provides the first ever solution of the combined effect of viscous, surface and molecular forces under transient conditions.