流体慣性力を考慮した非ニュートン流体潤滑理論 : 第1報, 修正レイノルズ方程式

概要

論文の詳細を見る
In this study, the generalized modified Reynolds equation governing non-Newtonian fluid film lubrication is derived by considering the fluid inertia effect in the cases of both the Cartesian coordinates and polar coordinates. In the derivation of a modified Reynolds equation, the fluid inertia terms in the euqations of motion for the thin film are averaged over the film thickness, and the concept of an equivalent pressure gradient is introduced to simplify the procedure of analysis. Moreover, in the constituive equation, the apparent viscosity, as a general function of equivalent shear stress, is introduced to express the relation between shear rate and shear stress, and then some empirical models for the apparent viscosity, such as the power law model, Eyring model and Rabinowitsch model, are examined as practical models. The generalized modified Reynolds equation is applied to the infinitely short journal bearings, and the analytical solution for the pressure distribution is obtained.
1992-06-25