Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Lubrication Characteristics of Laser Textured Parallel Thrust Bearing : Part 4 - Effect of Dimple Shape

Laser Texturing한 평행 스러스트 베어링의 윤활특성 : 제4보 - 딤플 형상의 영향

  • Park, Tae-Jo (School of Mechanical Engineering, ERI, Gyeongsang National University)
  • Received : 2011.09.01
  • Accepted : 2011.11.07
  • Published : 2011.12.31
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Abstract

Laser surface texturing (LST) methods are widely applied now to reduce friction and improve reliability of machine components such as thrust bearings, mechanical face seals and piston rings, etc. In this paper, the effect of dimple shapes on the lubrication characteristics of parallel thrust bearing are studied using a commercial computational fluid dynamics (CFD) code, FLUENT. Pressure and streamline distributions, variations of supporting load, leakage flow rate and friction force, are compared for three different dimple sectional shapes such as circle, pyramid and rectangle type. The lubrication characteristics are highly affected by dimple shapes and number of dimples. The pyramid type dimple shape can support the highest load while the rectangle type is the best in friction reduction.

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References

  1. Etsion, I., "State of the Art in Laser Surface Texturing," Trans. ASME, J. of Tribology, Vol. 127, pp. 248-253, 2005. https://doi.org/10.1115/1.1828070
  2. Brizmer, V., Kligerman, Y. and Etsion, I., "A Laser Surface Textured Parallel Thrust Bearing," Tribology Trans., Vol. 46, pp. 397-403, 2003. https://doi.org/10.1080/10402000308982643
  3. Etsion, I., "Improving Tribological Performance of Mechanical Components by Laser Surface Texturing," Tribology Letters, Vol. 17, pp. 733-737, 2004. https://doi.org/10.1007/s11249-004-8081-1
  4. Feldman, Y., Kligerman, Y., Etsion, I. and Haber, S., "The Validity of the Reynolds Equation in Modeling Hydrostatic Effects In Gas Lubricated Textured Parallel Surfaces," Trans. ASME, J. of Tribology, Vol. 128, pp. 345-250, 2006. https://doi.org/10.1115/1.2148419
  5. Olver, A. V., Fowell, M. T., Spikes, H. A. and Pegg, I. G., "'Inlet Suction', a Load Support Mechanism in Non-convergent, Pocketed, Hydrodynamic Bearings," Proc. IMechE, J. of Eng. Tribology, Vol. 220, pp. 105-108, 2006. https://doi.org/10.1243/13506501JET168
  6. Fowell, M., Olver, A. V., Gosman, A .D., Spikes, H. A. and Pegg, I., "Entrainment and Inlet Suction : Two Mechanisms of Hydrodynamic Lubrication in Textured Bearings," Trans. ASME, J. of Tribology, Vol. 129, pp. 221-230, 2007. https://doi.org/10.1115/1.2540156
  7. Chen, P. Y. P. and Hahn, E. J., "Use of Computational Fluid Dynamics in Hydrodynamic Lubrication," Proc. IMechE, J. of Eng. Tribology, Vol. 212, pp. 427-436, 1998. https://doi.org/10.1243/1350650981542236
  8. Brajdic-Mitidieri, P., Gosman, A. D., Ioannnides, E. and Spikes, H. A., "CFD Analysis of a Low Friction Pocketed Pad Bearing," Trans. ASME, J. of Tribology, Vol. 127, pp. 803-812, 2005. https://doi.org/10.1115/1.2032990
  9. 박태조, 황윤건, 손자덕, 정호경, "2차원 미세 포켓이 있는 무한장 Slider Bearing의 CFD해석," 한국윤활학회학회지, 제25권, 제1호, pp. 43-48, 2009.
  10. 박태조, 황윤건, "Laser Texturing한 평행 스러스트 베어링의 윤활특성 : 제1보 - 딤플 깊이의 영향," 한국윤활학회지, 제25권, 제5호, pp. 305-310, 2009.
  11. 박태조, 황윤건, "Laser Texturing한 평행 스러스트 베어링의 윤활특성 : 제2보 - 딤플 위치의 영향," 한국윤활학회지, 제26권, 제1호, pp. 1-6, 2010.
  12. 박태조, "Laser Texturing한 평행 스러스트 베어링의 윤활특성 : 제3보 - 딤플 수의 영향," 한국윤활학회지, 제27권, 제6호, pp. 302-307, 2011.
  13. FLUENT, "FLUENT 6.0 Manual," 2002.

Cited by

  1. Lubrication Characteristics of Micro-Textured Slider Bearing: Effect of Dimple Density vol.37, pp.4, 2013, https://doi.org/10.3795/KSME-A.2013.37.4.437
  2. Application of Lubrication Theory to Hydraulic Components Design vol.10, pp.1, 2013, https://doi.org/10.7839/ksfc.2013.10.1.046
  3. THD Analysis of a Surface Textured Parallel Thrust Bearing: Effect of Dimple Radius and Depth vol.30, pp.5, 2014, https://doi.org/10.9725/kstle.2014.30.5.303
  4. Lubrication Characteristics of Surface Textured Hydraulic Machine Components vol.9, pp.4, 2012, https://doi.org/10.7839/ksfc.2012.9.4.026