Static and dynamic performance characteristics of orifice compensated hydrostatic flexible journal bearings with non-newtonian lubricants

The combined effect of non-Newtonian lubricant behavior and bearing shell flexibility on the performance of an orifice compensated multirecess hydrostatic/hybrid journal bearing system is studied. The analysis considers the constitutive equations for the flow of a non-Newtonian lubricant through on orifice restrictor, the generalized Reynold's equation governing the flow of lubricant having variable viscosity, and 3-D elasticity equations. The computed results demonstrate that loss in hearing performance due to the pseudo-plastic effect of the non-Newtonian lubricant can be mitigated by a proper selection of parameters such as the deformation coefficient ((C) over bar (d)) and non-linearity factor ((K) over bar) or power law index (n).