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http://dx.doi.org/10.9725/kts.2019.35.6.382

Lubrication Analysis of Infinite Width Slider Bearing with a Micro-Groove: Part 2 - Effect of Groove Depth  

Park, TaeJo (School of Mechanical Engineering, ERI, Gyeongsang National University)
Jang, InGyu (Under-Graduate School, School of Mechanical & Aerospace Engineering, Gyeongsang National University)
Publication Information
Tribology and Lubricants / v.35, no.6, 2019 , pp. 382-388 More about this Journal
Abstract
It is currently well known that surface textures act as lubricant reservoirs, entrap wear debris, and hydrodynamic bearings, which can lead to certain increases in load-carrying capacities. Until recently, the vast majority of research has focused on parallel sliding machine components such as thrust bearings, mechanical face seals, piston rings, etc. However, most sliding bearings have a convergent film shape in the sliding direction and their hydrodynamic pressure is mainly generated by the wedge action. Following the first part of the present study that investigates the effect of groove position on the lubrication performances of inclined slider bearings, this paper focuses on the effects of groove depths and film thicknesses. Using a commercial computational fluid dynamics (CFD) code, FLUENT, the continuity and Navier-Stokes equations are numerically analyzed. The results show that the film thickness and groove depth have a significant influence on the pressure distribution. The maximum pressure occurs at the groove depth where the vortex is found and, as the depth increases, the pressure decreases. There is also a groove depth to maximize the supporting load with the film thickness. The friction force acting on the slider decreases with deeper grooves. Therefore, properly designed groove depths, depending on the operating conditions, can improve the load-carrying capacity of inclined slider bearings as compared to the bearings without a groove.
Keywords
slider bearing; surface texturing; Navier-Stokes equation; hydrodynamic lubrication; numerical analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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