In this study, we will simulate the hydrodynamic load capacity and equivalent roughness for textured surface in oil lubrication for well understanding of friction properties by hydrodynamic lubrication theory. In the dimple pattern, dimple depth is 2�...
In this study, we will simulate the hydrodynamic load capacity and equivalent roughness for textured surface in oil lubrication for well understanding of friction properties by hydrodynamic lubrication theory. In the dimple pattern, dimple depth is 2μm and dimple size is 40μm, 70μm, and 100μm. Calculated Rrms<SUP>*</SUP> is 47nm from measured value of Rrms,1 and Rrms,2. Viscosity was 3.125Pa · s for paraffin oil. It can be seen that hydrodynamic load capacity WHL increased with the decreasing of minimum oil film thickness hmin. And if we compare the maximum WHL at hmin=Rrms<SUP>*</SUP>,100μm diameter dimples showed largest of all as 9.2N. Maximum WHL at hmin=Rrms<SUP>*</SUP> is 7.5N and 6.2N for 70μm, 40μm diameter dimples, repectively. WHL of the flat slider shows almost of zero. It was shown the hydrodynamic lubrication in dimple patterning and could be seen that an increase in durability.