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http://dx.doi.org/10.9725/kstle.2009.25.5.305

Lubrication Characteristics of Laser Textured Parallel Thrust Bearing: Part 1 - Effect of Dimple Depth  

Park, Tae-Jo (School of Mechanical & Aerospace Engineering, ERI, Gyeongsang National University)
Hwang, Yun-Geon (Graduate School, Dept. of Mechanical & Aerospace Engineering, Gyeongsang National University)
Publication Information
Tribology and Lubricants / v.25, no.5, 2009 , pp. 305-310 More about this Journal
Abstract
Laser surface texturing (LST) methods are applied recently to generate micro-dimples in machine components having parallel sliding surfaces such as thrust bearings, mechanical face seals and piston rings, etc. And it is experimentally reported by several researchers that the micro-dimpled bearing surfaces can reduce friction force. Until now, however, theoretical results for various dimple parameters are not fully presented. In this paper, a commercial computational fluid dynamics (CFD) code, FLUENT is used to investigate the effect of dimple depth on the lubrication characteristics of parallel thrust bearing. The results show that the pressure, velocity and density distributions within dimples are highly affected by dimple depths and cavitation conditions. Adoption of micro-dimple on the bearing surface can reduce the friction force highly and its levels are affected by dimple depth. The numerical methods and results can be use in design of optimum dimple characteristics to improve thrust bearing performance.
Keywords
thrust bearing; laser surface texturing(LST); micro-dimple; CFD; FLUENT;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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