Non-Newtonian dynamics characteristics of parabolic-film slider bearings: Micropolar fluid model

The non-Newtonian influences of micropolar fluids on the dynamic stiffness and damping characteristics of parabolic-film slider bearings are investigated in the present paper. A closed-form solution for the bearing performances has been derived by applying the linear theory to the equation of the hydrodynamic film force. Comparing with the case of Newtonian lubricants, the non-Newtonian effects of micropolar fluids provide higher load capacities and higher dynamic coefficients. The improved performances are emphasized especially for the bearing with smaller film heights and larger fluid-gap interacting parameters and coupling parameters.