Viscoelastic Squeeze Film Characteristics With Inertia Effects Between Two Parallel Circular Plates Under Sinusoidal Motion

[+] Author and Article Information
H. Hashimoto

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

J. Tribol 116(1), 161-166 (Jan 01, 1994) (6 pages) doi:10.1115/1.2927034 History: Received March 01, 1993; Revised June 28, 1993; Online June 05, 2008


In this paper, viscoelastic squeeze film characteristics subjected to fluid inertia effects are investigated theoretically in the case of parallel circular type squeeze films. In the development of modified lubrication equations, the nonlinear Maxwell model combining the Rabinowitsch model and Maxwell model is used as a constitutive equation for the viscoelastic fluids, and the inertia term in the momentum equation is approximated by the mean value averaged over the film thickness. Applying the modified lubrication equation to parallel circular type squeeze films under sinusoidal motion, the variation of the pressure distribution with time is calculated numerically for various types of fluids such as Newtonian, pseudo-plastic, linear Maxwell and nonlinear Maxwell fluids. Some numerical results are presented in graphic form, and the effects of inertia forces on the viscoelastic squeeze film characteristics are discussed.

Copyright © 1994 by The American Society of Mechanical Engineers
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