表面技术2017，Vol.46Issue(6)：1-8,8.DOI:10.16490/j.cnki.issn.1001-3660.2017.06.001
表面织构及供油量对润滑性能影响的建模分析
Effect of Surface Texture and Oil Supply on Lubricating Performance Based on Modeling
摘要
Abstract
The work aims to study lubricating property of texture surface under different oil supply conditions. Firstly, star-vation lubrication model allowing for surface texture was established, and then the oil film thickness and pressure distribution of texture surface under starvation working conditions could be obtained by solving the modified Reynolds equation. Secondly, lu-brication state at each point in contact area was determined based upon the film thickness, and shear stress under boundary lu-brication, mixed lubrication and hydrodynamic lubrication was calculated based upon contact pressure and film thickness, fric-tion coefficient was obtained by integrating frictional force. The lubricating behavior of three textured surfaces was simulated with the oil supply thickness of 50~500 nm and under full supply conditions to obtain friction coefficient of surface textures un-der different lubrication conditions. At the speed of 0.1 m/s, oil supply volume had slight influence on thickness of film in con- tact area, and the textures exhibited different lubrication performance under different lubrication conditions. At the speed of 0.2 m/s, the oil supply thickness had great influence on film thickness, which increased obviously with the increase of the oil supply thickness. The friction coefficient was the minimum at the oil supply thickness of 200 nm. Provided with hydrodynamic lubrica-tion, surface texture has no friction reduction effect. Provided with boundary lubrication, surface texture has friction reduction effect, and dense texture has relatively smaller friction coefficient. Provided with mixed lubrication, too dense or sparse texture has no friction reduction effect, but properly distributed texture may have friction reduction effect.关键词
表面织构/乏油/摩擦系数/边界润滑/混合润滑/流体润滑/减摩Key words
surface texture/starvation/friction coefficient/boundary lubrication/mixed lubrication/fluid lubrication/anti-friction分类
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张生光,王文中,赵自强..表面织构及供油量对润滑性能影响的建模分析[J].表面技术,2017,46(6):1-8,8.基金项目
国家自然科学基金(51675046,U1637205) Supported by the National Natural Science Foundation of China (51675046, U1637205) （51675046,U1637205）
