Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
권호 표지
DOI QR코드

DOI QR Code

Partial-EHL Analysis of Wheel Bearing for a Vehicle

자동차용 휠 베어링의 부분탄성유체윤활 해석

  • Kim Dong-Won (Precision and Mechanical Engineering, Pusan National University) ;
  • Lee Sang-Don (Precision and Mechanical Engineering, Pusan National University) ;
  • Cho Yong-Joo (School of Mechanical Engineering, Pusan National University)
  • 김동원 (부산대학교 정밀기계공학과) ;
  • 이상돈 (부산대학교 정밀기계공학과) ;
  • 조용주 (부산대학교 기계공학부)
  • Published : 2005.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Most machine element, such as gears and bearings, are operated in the mixed lubrication region. Contact between two asperities has an effect on machine life by increasing local pressure. To estimate fatigue life exactly, asperity contact should be considered as a factor of fatigue life because this happening produce friction, abrasion and make flash temperature. In this paper, asperity contact is considered as a result of film breakdown when lubricant pressure is not enough to separate two asperities. Contact pressure is calculated to asperity overlap region and added to lubricant pressure. For this model, numerical procedure is introduced and the result on surface roughness and velocity for wheel bearing is presented. Results of EHL analysis for wheel bearing show that asperity contact is occurred at the edge ofEHL conjunction where has a insufficient lubricant pressure to separate two surface.

Keywords

References

  1. Patir, N. and Cheng, H. S. 'An average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial hydrodynamic Lubrication,' ASME J. Lubri. Tech., 100, pp. 12-17, 1978 https://doi.org/10.1115/1.3453103
  2. 최정식, 김태완, 구영필, 조용주, '비정규 높이 분포 표면의 탄성 변형을 고려한 Flow Factor,' 한국윤활학회 제37회 추계학술대회, PP.201-209, 2003
  3. C. H. Venner and W. E. ten Napel 'Surface Roughness effects in an EHL Line Contact,' ASME J. Tribol., 114(4) 616-622, 1992 https://doi.org/10.1115/1.2920926
  4. Venner, C.H. and Lubrecht, A. A., 'Transient Analysis of Surface Features in an EHL Line Contact in the Case of Sliding,' ASME Journal of Tribology, Vol. 116, pp.186-193, 1994 https://doi.org/10.1115/1.2927195
  5. Zhu, D. and Ai, X., 'Point Contact EHL Based on Optically Measured Three-Dimensional Rough Surfaces,' ASME Journal of Triblolgy, 119(3), pp.375-384, 1997 https://doi.org/10.1115/1.2833498
  6. L. Chang, 'A deterministic model for line contact partial elasto-hydrodynamic lubrication,' Triblo. Int., 28(2), pp.75-84, 1995 https://doi.org/10.1016/0301-679X(95)92697-4
  7. Jiang, X., Hua, D. Y., Cheng, H. S., Ai, X. and Lee, S. C., 'A Mixed Elastohydrodynamic Lubrication Model with Asperity Contact,' ASME Journal of Tribology, 121, July, 1999
  8. Hu Yz and Zhu, D. 'A full numerical solutioj to the mixed lubrication in point contacts,' Journal of Tribology, 122, pp.1-9, 2000 https://doi.org/10.1115/1.555322
  9. Love A. E. H., 'Stress Produced in a Semi-Infinite Solid by Pressure on Part of the Boundary,' Phil. Trans. Royal Society, A228, pp.377-420, 1929
  10. Roelands, C.J.A., 'Correlational Aspects of the viscosity-temperature-pressure relationship of lubricating oils, Druk, V.R.B., Groinen, Netherland, 1966
  11. Dawson, D. and Higginson, G.R., 'Elastohydrodynamic Lubrication,' Pergamon, Oxford, 1966
  12. 김태완, '탄성유체윤활 상태에서의 접촉 피로 수명 예측에 관한 연구,' 부산대학교, 박사학위 논문, 2003