Non-Newtonian effects on the dynamic characteristics of one-dimensional slider bearings: Rabinowitsch fluid model

The non-Newtonian effects of an isothermal incompressibe laminar-flow lubri cant on the dynamic stiffness and damping characteristics of one-dimensiona l slider bearings are theoretically examined On the basis of Rabinowitsch f luid (cubic equation) model, the modified Reynolds equation considering bea ring-squeeze action is derived to take into account the transient motion of the slider, and the non-Newtonian properties of lubricants. Applying a sma ll perturbation technique, both the steady-state performance and the dynami c characteristics are evaluated. According to the results, the steady film pressure, load-carrying capacity, and the dynamic stiffness and damping beh aviors are significantly affected by the values of the dimensionless nonlin ear factor accounting for non-Newtonian effects, the wedge parameter of a s lider profile and the squeeze number of bearing-squeeze action.