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Lubrication Characteristics of Micro-Textured Slider Bearing: Effect of Dimple Density

Micro-Texturing한 Slider Bearing의 윤활특성 : 딤플 밀도의 영향

  • Park, Tae Jo (School of Mechanical Engineering, ERI, Gyoungsang Nat'l Univ.) ;
  • Lee, Joon Oh (Graduate School of Mechanical and Aerospace Engineering, Gyoungsang Nat'l Univ.)
  • 박태조 (경상대학교 기계공학부) ;
  • 이준오 (경상대학교 대학원 기계항공공학부)
  • Received : 2012.07.09
  • Accepted : 2013.01.02
  • Published : 2013.04.01

Abstract

In recent times, surface texturing methods have been widely applied to reduce friction and improve the reliability of machine components such as parallel thrust bearings, mechanical face seals, and piston rings. In this study, a numerical analysis is carried out to investigate the effect of uniformly spaced hemispherical dimples on the lubrication characteristics of a slider bearing using a commercial computational fluid dynamics (CFD) code, FLUENT. The pressure distributions, load capacity, leakage flowrate, and friction force are strongly affected by the dimple diameter and the number of dimples. In particular, the load capacity and friction force decrease linearly with the dimple density whereas the leakage increases. These results can be used for designing the optimum dimple characteristics in order to improve the lubrication performance of slider bearings, for which further studies are required.

Keywords

Slider Bearing;Surface Texturing;micro-Dimple;Friction Reduction;CFD

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Cited by

  1. vol.17, pp.2, 2014, https://doi.org/10.5293/kfma.2014.17.2.073
  2. Lubrication Characteristics of Surface Textured Parallel Thrust Bearing with Ellipsoidal Dimples vol.32, pp.5, 2016, https://doi.org/10.9725/kstle.2016.32.5.147