Dynamic Analysis Including Stability of Infinitely Long Flexibly Supported Journal Bearings with Micropolar Lubricant

Abstract

The aim of the present thesis is to study theoretically, using finite difference techniques, the stability characteristics of infinitely long flexibly supported hydrodynamic journal bearings lubricated with micropolar fluid. The theoretical study has been presented using the linear analysis based on the perturbation method. Parametric studies have been conducted and stability characteristics have been obtained and a comparison of the results of newtonian and micropolar fluid analyses for different parameters have been compared and presented. A modified Reynolds equation has been obtained using micropolar lubrication theory and the solution of pressure obtained from this equation is used in the governing differential equations of motion for external stiffness and damping, to arrive at a stability threshold.