Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Effect of Sliding Velocity on 3D Rough Surface in Mixed Lubrication Regime

속도의 영향에 따른 3차원 거친 표면의 혼합윤활해석

  • 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)
  • Received : 2012.09.05
  • Accepted : 2012.11.12
  • Published : 2013.02.28
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Abstract

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.

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References

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