An Analysis of the Performance of Secant – Shaped Porous Slider Bearing Lubricated with Couple Stress Fluid under the Effect of Slip Velocity and Squeeze Velocity

Abstract

An attempt has been made to study the analysis on the performance of secant – shaped porous slider bearing lubricated with couple stress fluid considering slip velocity and squeeze velocity. In the present study, we investigate the characteristics of the bearing with the impact of permeability and couple stresses by considering slip velocity and squeeze velocity. Based on Stokes constitutive equations for couple stress fluids and Darcay’s law for porous medium the modified Reynolds type equation is derived.  The modified Reynolds equation is solved analytically and closed form expressions are obtained for the fluid film pressure, load carrying capacity, frictional force and centre of pressure. Computed values of dimensionless load capacity of bearing, friction force on the moving slider, coefficient of friction and the position of centre pressure were displayed in graphical form. The figures are presented here tend to establish that the use of couple stress fluid as a lubricant increases the load carrying capacity and decreases the coefficient friction. The load capacity, friction and coefficient of friction decreased when the slip parameter increased. But, the load capacity as well as friction decreased and the coefficient of friction increased when the permeability the parameter increased.