Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
권호 표지
DOI QR코드

DOI QR Code

EHL Analysis of Ball Bearing for Rough Surface With the FlowFactor

FlowFactor를 이용한 볼베어링의 탄성유체윤활해석

  • Lee, Byung-Wook (Dept. of Mechanical Engineering, Pusan National University) ;
  • Moon, Seok-Man (Dept. of Mechanical Engineering, Pusan National University) ;
  • Kim, Tae-Wan (Dept. of Mechanical Engineering, PuKyong National University) ;
  • Cho, Yong-Joo (Dept. of Mechanical Engineering, Pusan National University)
  • 이병욱 (부산대학교 기계공학부) ;
  • 문석만 (부산대학교 기계공학부) ;
  • 김태완 (부경대학교 기계공학부) ;
  • 조용주 (부산대학교 기계공학부)
  • Received : 2011.08.20
  • Accepted : 2011.11.05
  • Published : 2011.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this paper is to analyze and discuss the effects of surface roughness by comparing the elastohydrodynamic lubrication(EHL) analysis of smooth surface and rough surface as the ball bearing. In order to do this, The average flow model is adapted for the interaction of the flow rheology of lubricant and surface roughness. The average Reynolds equation and the related flow factor which describes the coupled effects of surface roughness and flow rheology, the viscosity-pressure and density-pressure relations equations, the elastic deformation equation, and the force balance equation are solved simultaneously. The results show that effects of surface roughness on the film thickness and pressre distribution should be considered especially in EHL contact problems.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. Tzeng, S.T. and Saibel, "Surface Roughness Effect on Slider Bearing Lubrication", ASLE, Trans, Vol 10, p. 334, 1967. https://doi.org/10.1080/05698196708972191
  2. H. Christensen and K. Tonder, "The Hydrodynamic Lubrication of Rough Journal Bearings", ASME, J. Lubri. Tech, pp. 166-172, 1973.
  3. Patir, N. and Cheng, H. S, "An average Flow Model for Determining Effects of Three-Dimensional Roughness on Patial hydrodynamic Lubrication", ASME, J. Lubri. Tech., Vol. 100, pp. 12-17, 1978. https://doi.org/10.1115/1.3453103
  4. Patir, N. and Cheng, H. S. "Application of Average Flow Model to Lubrication Between Rough Sliding Surfaces", ASME, J. Lubri. Tech., Vol. 101, pp. 220-230, 1979. https://doi.org/10.1115/1.3453329
  5. J. L. Teal and A.O. Lebeck, "An Evaluation of the Average Flow Model[1] for Surface Roughness Effects in Lubrication", ASME, Journal of Tribology, Vol. 102, pp. 360-367, 1980.
  6. L. Lunde and K. Tonder, "Pressure and Shear Flow in a Rough Hydrodynamic Bearing, Flow Factor Calculation", ASME, Journal of Tribology, Vol. 119, pp. 549-555, 1997. https://doi.org/10.1115/1.2833536
  7. 강민호, 김태완, 구영필, 조용주, "Kurtosis 변화에 따른 Pressure Flow factor에 관한 연구", 윤활학회 제31회 춘계학술대회 논문집, pp. 243-250, 2000.

Cited by

  1. EHL Analysis of Ball Bearing Considering Surface Roughness vol.29, pp.4, 2013, https://doi.org/10.9725/kstle-2013.29.4.228