Performance of a Magnetic Fluid-Based Longitudinally Rough Short Bearing

摘要

Efforts have been made to analyze the performance of a longitudinally rough short bearing formed by a magnetic fluid. Bearing surfaces are assumed to be longitudinally rough. The roughness of the bearing surfaces is characterized by a stochastic random variable with non-zero mean, variance and skewness. While modeling the roughness it has been taken into consideration that the standard deviation associated with the characterization of roughness plays a predominant role as compared to that of mean and skewness. The associated Reynolds equation is solved with appropriate boundary conditions to obtain the pressure distribution which is further used to calculate load carrying capacity. The results are presented numerically as well as graphically. It is observed that the performance of the bearing system gets improved due to the magnetization. It is seen that the roughness affects the system adversely. The study reveals that the negative effect of the roughness can be minimized by the positive effect of the magnetization. Thus, while designing the bearing system, the roughness must be given due consideration.