Non-Newtonian Effects on the Static Characteristics of One-Dimensional Slider Bearings in the Inertial Flow Regime

[+] Author and Article Information
H. Hashimoto

Department of Mechanical Engineering, Tokai University, 1117 Kitakaname, Hiratsuka Kanagawa, 259-12, Japan

J. Tribol 116(2), 303-309 (Apr 01, 1994) (7 pages) doi:10.1115/1.2927215 History: Received March 11, 1993; Revised August 09, 1993; Online June 05, 2008


In this paper, the non-Newtonian effects of lubricants on the static characteristics of one-dimensional, high-speed slider bearings are examined theoretically by considering the fluid inertia effects. In the derivation of the modified Reynolds equation, the fluid inertia term in the momentum equation for the non-Newtonian lubricant films is averaged over the film thickness, and the Rabinowitsch empirical model is used as a constitutive equation for non-Newtonian fluids. Applying the modified Reynolds equation to the one-dimensional slider bearings and solving the equation analytically based on the perturbation technique, the film pressure, load carrying capacity, friction force, and inlet flow rate are obtained under various values of the dimensionless nonlinear factor and film thickness ratio. The combined effects of fluid inertia and non-Newtonian characteristics on these static characteristics of lubricants are discussed.

Copyright © 1994 by The American Society of Mechanical Engineers
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