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Abstract

This paper presents the frictional effect and load carrying capacity in porous inclined multi stepped composite bearings with couple stress fluids. The most general form of the modified Reynolds type equations derived for the squeeze film lubrication of the porous inclined multi stepped bearings and an expressions for pressure distribution, work load and frictional force is mathematically derived. These expressions can be utilized to obtain the performance characteristics of different types of geometry under consideration. The important parameters for discussing the behavior of bearing characteristics are the couple stress parameter , the percolation parameter ‘ß’ and the permeability parameter. The global system of equations was obtained for the bearing and solved using MATLAB iterative scheme. It is observed that there is a significant increase in the pressure distribution this will lead to an increase in load capacity for fluids with couple stress in comparison with Newtonian fluids and the coefficient of friction for inclined stepped composite bearing compared to other geometries. According to the results, the couple stress fluid as a lubricant improves the squeeze film characteristics and results in a longer bearing life.