Canadian Journal of Pure & Applied Sciences

Abstract: This paper describes a theoretical analysis of micropolarity-surface roughness interaction of infinitely long journal bearing. The modified averaged Reynolds type equation for the study of surface roughness has been derived on the basis of Eringen’s micropolar fluid theory. The generalized stochastic random variable with nonzero mean, variance and skewness is used to mathematically model the surface roughness on the bearing surface. The more accurate Reynolds boundary conditions are utilized to solve the average Reynolds type equation. The numerical results are obtained for the fluid film pressure, load carrying capacity and the frictional force. It is found that the performance of the long journal bearing is dependent on the type of roughness pattern on the bearing surface and the lubricant additives. Further, it is found that the performance of the bearing improves due to the presence of negatively skewed surface roughness on the bearing surface and these effects are more pronounced for the micropolar lubricants.