Tribology and Lubricants

  • 제29권1호
  • /
  • Pages.27-32
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  • 2013
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  • 2713-8011(pISSN)
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  • 2713-802X(eISSN)
한국트라이볼로지학회 (Korean Tribology Society)
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속도의 영향에 따른 3차원 거친 표면의 혼합윤활해석

Effect of Sliding Velocity on 3D Rough Surface in Mixed Lubrication Regime

  • Lim, DongJin (Graduate School, Dept. of Mechanical Engineering, Pusan National University) ;
  • Moon, Sukman (Graduate School, Dept. of Mechanical Engineering, Pusan National University) ;
  • Cho, Yongjoo (Dept. of Mechanical Engineering, Pusan National University)
  • 투고 : 2012.09.05
  • 심사 : 2012.11.12
  • 발행 : 2013.02.28
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초록

This study examined the effects of surface roughness in the mixed lubrication regime of smooth and rough surfaces for roller bearings. The average flow model was adopted for interaction between the flow rheology of the lubricant and the surface roughness. The average Reynolds equation and related flow factor that describes the coupled effects of surface roughness and flow rheology, the viscosity-pressure and density-pressure equations, the elastic deformation equation, and the force balance equation were solved simultaneously. The results showed that the effects of surface roughness on the film thickness and pressure distribution should be considered, especially in elastohydrodynamic lubrication contact problems.

키워드

참고문헌

  1. Tzeng, S.T., and Saibel, "Surface Roughness Effect on Slider Bearing Lubrication," ASLE, Trans, Vol. 10, pp. 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, April 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. 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.
  6. Mihai B. Dobrica and Michel Fillon, "Mixed Elasto hydrodynamic Lubrication in a Partial Journal Bearing- Comparison Between Deterministic and Stochastic Models," ASME, Journal of Tribology, Vol 128, pp. 778-788, 2006. https://doi.org/10.1115/1.2345404