Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
권호 표지
DOI QR코드

DOI QR Code

EHL Analysis for Rough Surface with Directional Roughness

거친 표면의 돌기 방향성에 따른 EHL 해석

  • Kim, Tae-Wan (School of Mechanical Engineering, Pukyong National University) ;
  • Cho, Yong-Joo (School of Mechanical Engineering, Pusan National University)
  • Published : 2009.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents EHL analysis for rough surfaces with directional roughness. Three different types of surfaces with pure longitudinal roughness, pure transversal roughness and isotropic roughness are generated. For the surfaces with longitudinal and transversal roughness, two cases are analyzed; one is a case of asperity peak on a spherical contact center, the other one is of valley on a spherical contact center. As a results, the surface with pure transversal roughness gives higher pressure and smaller minimum film thickness than the surface with pure longitudinal roughness, and the surface with isotropic roughness has similar EHL behavior with the surface with pure transversal roughness.

Keywords

References

  1. Chang, L., 'A Detenninistic Model for Line Contact Partial Elasto-hydrodynamic Lubrication', Triblo Int., Vol. 28, No. 2, pp.75-84, 1995 https://doi.org/10.1016/0301-679X(95)92697-4
  2. Lubrecht, A.A., Ten Napel, W.E. and Bosma., R., 'The Tnfluence of Longitudinal and Transverse Roughness on the Elastohydrodynamic Lubrication of Circular Contacts', Journal of Tribology ASME, Vol. 110, pp. 421-426, 1988 https://doi.org/10.1115/1.3261645
  3. Patir, N. Cheng, H. S. 'An Average Flow Model for Detennining Effects of Three-Dimensional Roughness on Partial hydrodynamic Lubrication', ASME, J. Lubri. Tech., Vol. 100, pp. 12-17, 1978 https://doi.org/10.1115/1.3453103
  4. T. W. Kim and Y. J. Cho, 'The Flow Factors Considering the Elastic Defonnation for the Rough Surface with a Non-Gaussian Height Distribution', Tribol-logy Transactions, Vol. 51 , No. 2, pp. 213-220, 2008 https://doi.org/10.1080/10402000701730502
  5. C. H. Venner W. E. ten Napel 'Surface Roughness effects in an EHL Line Contact', ASME, J. Tribol., Vol. 114, No. 4, pp. 616-622, 1992 https://doi.org/10.1115/1.2920926
  6. 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
  7. Zhu, D. and Ai, X., 'Point Contact EHL Based on Optically Measured Three-Dimensional Rough Surfaces', ASME Journal of Triblolgy, Vol. 119, No. 3, pp. 375-384, 1997 https://doi.org/10.1115/1.2833498
  8. 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
  9. Roelands, C. J. A., 'Correlational Aspects of the Viscosity-temperature-pressure Relationship of Lubricating Oils, Druk, V.R.B., Groinen, Netherland, 1966
  10. Dowson, D. and Higginson, G.R., 'Elastohydrodynamic Lubrication,' Perga-mon, Oxford, 1966