Zhang Yongbin
College of Mechanical Engineering, Changzhou University, Changzhou, 213016, Jiangsu Province, China.
Sci Rep. 2015 Sep 28;5:14539. doi: 10.1038/srep14539.
The paper proposes a novel nano bearing formed by the physical adsorption of the confined fluid to the solid wall. The bearing is formed between two parallel smooth solid plane walls sliding against one another, where conventional hydrodynamic lubrication theory predicted no lubricating effect. In this bearing, the stationary solid wall is divided into two subzones which respectively have different interaction strengths with the lubricating fluid. It leads to different physical adsorption and slip properties of the lubricating fluid at the stationary solid wall respectively in these two subzones. It was found that a significant load-carrying capacity of the bearing can be generated for low lubricating film thicknesses, because of the strong physical adsorption and non-continuum effects of the lubricating film.
本文提出了一种新型纳米轴承，它由受限流体在固体壁面上的物理吸附形成。该轴承形成于两个相互滑动的平行光滑固体平面壁之间，传统的流体动力润滑理论预测在此处不存在润滑效果。在这种轴承中，静止的固体壁被分为两个子区域，它们与润滑流体的相互作用强度不同。这导致润滑流体在这两个子区域的静止固体壁面上分别具有不同的物理吸附和滑移特性。研究发现，由于润滑膜的强物理吸附和非连续效应，对于低润滑膜厚度，该轴承能够产生显著的承载能力。
