期刊
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
卷 140, 期 4, 页码 -出版社
ASME
DOI: 10.1115/1.4039163
关键词
hydrodynamic lubrication; surface texture; donut-shaped bump; multigrid method
资金
- National Natural Science Foundation of China [51305168, 51375211, 51375213]
- Natural Science Foundation of Jiangsu Province [BK20130524]
- Innovation Program of Ordinary University Graduate Students of Jiangsu Province [KYLX_1015]
- Research Foundation for Advanced Talents of Jiangsu University [13JDG090]
The influence of donut-shaped bump texture on the hydrodynamic lubrication performance for parallel surfaces is presented in this paper. A mathematical equation has been applied to express the shape of three-dimensional donut-shaped bump texture. Numerical simulation of the pressure distribution of lubricant between a textured slider and a smooth, moving slider has been performed to analyze the geometrical parameters' influence on the hydrodynamic performance for textured surfaces. The numerical results show that the convex of the donut-shaped bump provides a microstep slider, which can form a convergent wedge and build up hydrodynamic pressure. Optimum values of horizontal spacing and bump height are obtained to maximize the hydrodynamic pressure. It is also noted that the average pressure increases monotonically with the increase of bump radius, but decreases with the increase of vertical spacing and dimple depth, respectively.
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