Research on the Lubrication Performance of Sliding Bearings with Rough Surfaces
Two-directional sine functions were incorporated onto the surface of the plain bearing.By sol-ving the Reynolds equation,the impacts of speed,load,and roughness parameters on its lubrication per-formance was research.The results show that the minimum film thickness increases with the increase of journal velocity and decreases with the increase of load.When surface roughness is introduced,the pres-sure and film thickness fluctuate,and the amplitude of the fluctuation decreases with the increase of roughness wavelength,and increases with the increase of roughness amplitude.Because the pressure fluc-tuation and film thickness fluctuation caused by roughness have adverse effects on the fatigue life and lu-brication reliability of the material respectively,reducing the surface roughness during machining is condu-cive to improving the life of the plain bearing.
plain bearingroughnessoil film pressurelubrication
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