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 f lexibility on the performance of an orifice compensated multirecess hydrost atic/hybrid journal bearing system is studied. The analysis considers the c onstitutive equations for the flow of a non-Newtonian lubricant through on orifice restrictor, the generalized Reynold's equation governing the flow o f lubricant having variable viscosity, and 3-D elasticity equations. The co mputed results demonstrate that loss in hearing performance due to the pseu do-plastic effect of the non-Newtonian lubricant can be mitigated by a prop er selection of parameters such as the deformation coefficient ((C) over ba r (d)) and non-linearity factor ((K) over bar) or power law index (n).