Abstract— The present work deals with the micro-polar ferro fluid lubrication theory to the problem of the static characteristics of finite flexible journal bearings. Based on a magnetic field distribution with a gradient in both circumferential and axial directions, a modified Reynolds equation has been derived by incorporating the characteristics of micro-polar fluid and using the magnetic forces on magnetic particles as the body-external forces. The numerical solution of the discretized Reynolds equation by the finite difference technique with an appropriate iterative procedure has resulted in the film pressure distribution. With the help of the film pressure, load capacity, side leakage flow and frictional parameter are obtained for various parameters. The results indicate that the influences of micro-polar and magnetic effects on the bearing performance characteristics are signicantly apparent.

Index Terms— Flexible journal bearings, Hydrodynamic lubrication, Static characteristics, Magnetic fluids, Micro-polar effect

Cite: S K Guha, " On the Steady-State Performance of Hydrodynamic Flexible Journal Bearings of Finite Width Lubricated By Ferro Fluids with Micro-Polar Effect," International Journal of Mechanical Engineering and Robotics Research, Vol.1, No. 2, pp. 32-49, July 2012.