Abstract
Previous lubrication studies concerning the non-recessed hole-entry hybrid spherical journal bearings are mainly carried out without the consideration of surface roughness effects. However, surface topography plays an important role on the tribological performance. In this paper, the combined influence of surface roughness effects and behavior of piezo-viscous shear thinning lubricant has been investigated. The effect of different roughness patterns i.e., longitudinal, isotropic, and transverse surface patterns and behavior of piezo-viscous shear thinning lubricant on bearing performance have been comprehensively studied based on an average flow model. The results show that longitudinal roughness surface pattern improves the bearing stability. The developed numerical model may be helpful for the design of hybrid non-recessed spherical journal bearings.
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