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임동진(DongJin Lim),문석만(Sukman Moon),조용주(Yongjoo Cho) 한국트라이볼로지학회 2013 한국윤활학회지(윤활학회지) Vol.29 No.1
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.
풍력발전기용 피치베어링의 하중분배, 접촉 및 피로수명 해석
김영진(Youngjin Kim),문석만(Sukman Moon),조용주(Yongjoo Cho) 한국트라이볼로지학회 2013 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.29 No.1
This study is aimed to predict the fatigue life for pitch bearings under combined radial, thrust load and moment. In order to do this, a series of simulation such as bearing load distribution, initial surface stress, subsurface stress and fatigue analysis is needd. Fatigue life for pitch bearing can be predicted by using a bearing"s material fatigue property.