Tribology and Lubricants

  • 제26권1호
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  • Pages.1-6
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  • 2010
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  • 2713-8011(pISSN)
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  • 2713-802X(eISSN)
한국트라이볼로지학회 (Korean Tribology Society)
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Laser Texturing한 평행 스러스트 베어링의 윤활특성 : 제2보 - 딤플 위치의 영향

Lubrication Characteristics of Laser Textured Parallel Thrust Bearing : Part 2 - Effect of Dimple Location

  • 박태조 (경상대학교 기계항공공학부.공학연구원) ;
  • 황윤건 (경상대학교 대학원 기계항공공학부)
  • 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)
  • 투고 : 2009.11.25
  • 심사 : 2009.12.31
  • 발행 : 2010.02.28
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초록

In the last decade, laser surface texturing (LST) has emerged as a viable option of surface engineering. Many problems related with mechanical components such as thrust bearings, mechanical face seals and piston rings, etc, LST result in significant improvement in load capacity, wear resistance and reduction in friction force. It is mainly experimentally reported the micro-dimpled bearing surfaces can reduce friction force, however, precise theoretical results are not presented until now. In this paper, a commercial computational fluid dynamics(CFD) code, FLUENT is used to investigate the lubrication characteristics of a parallel thrust bearing having 3-dimensional micro-dimple. The results show that the pressure, velocity and density distributions are highly affected by the location and number of dimple. The numerical method and results can be use in design of optimum dimple characteristics, and further researches are required.

키워드

참고문헌

  1. 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
  2. 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
  3. 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
  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. 345-350, 2006. https://doi.org/10.1115/1.2148419
  5. Feldman, Y., Kligerman, Y. and Etsion, I., "Stiffness and Efficiency Optimization of a Hydrostatic Laser Surface Textured Gas Seal," Trans. ASME, J. of Tribology, Vol. 129, pp. 407-410, 2007. https://doi.org/10.1115/1.2540120
  6. 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
  7. 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
  8. Dzodzo, M., Braun, M. J. and Hendricks, R. C., "Pressure and Flow Characteristics in a Shallow Hydrostatic Pocket with Rounded Pocket/Land Joints," Tribology Int., Vol. 29, pp. 69-76, 1996. https://doi.org/10.1016/0301-679X(95)00036-4
  9. 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
  10. Helene, M., Arghir, M. and Frene, J., "Numerical Study of the Pressure Pattern in a Two-Dimensional Hybrid Journal Bearing Recess, Laminar, and Turbulent Flow Results," Trans. ASME, J. of Tribology, Vol. 125, pp. 283-290, 2003. https://doi.org/10.1115/1.1537233
  11. 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
  12. 박태조, 황윤건, 손자덕, 정호경, "2차원 미세 포켓이 있는 무한장 Slider Bearing의 CFD해석," 한국윤활학회지, 제25권, 제1호, pp. 43-48, 2009.
  13. 박태조, 황윤건, "Laser Texturing한 평행 스러스트베어링의 윤활특성 :제1보 - 딤플깊이의 영향," 한국윤활학회지, 제25권, 제5호, pp. 305-310, 2009.
  14. FLUENT, "FLUENT 6.0 Manual," 2002.

피인용 문헌

  1. Laser Texturing한 평행 스러스트 베어링의 윤활특성 : 제3보 - 딤플 수의 영향 vol.27, pp.6, 2010, https://doi.org/10.9725/kstle.2011.27.6.302
  2. Laser Texturing한 평행 스러스트 베어링의 윤활특성 : 제4보 - 딤플 형상의 영향 vol.27, pp.6, 2010, https://doi.org/10.9725/kstle.2011.27.6.338