Surface Roughness Effect on the Performance of a Magnetic Fluid Based Porous Secant Shaped Slider Bearing

Abstract

It has been sought to analyze the performance of a porous rough secant shaped slider bearing under the presence of a magnetic fluid lubricant. The concerned stochastically averaged Reynolds equation is solved to get the pressure distribution, which is, then used to derive the expression for the load carrying capacity. Consequently, the friction is also calculated. Computed values of dimensionless load carrying capacity and friction are displayed in graphical form. The figures are presented here tend to establish that the use of magnetic fluid as a lubricant increases the load carrying capacity and decreases the friction. However, the present study reveals that the negative effect of porosity and standard deviation can be reduced to a large extent by the positive effect of the magnetization parameters in the case of negatively skewed roughness.  Further, this reduction becomes more evident when the negative variance is involved.

Key words: slider bearing, secant shape, magnetic fluid, load carrying capacity, friction