Squeeze Film Flow of Elastic Fluids at Steady Motion and Dynamic Loads

[+] Author and Article Information
A. Harnoy

New Jersey Institute of Technology, Department of Mechanical Engineering, Newark, NJ 07102

J. Tribol 109(4), 691-695 (Oct 01, 1987) (5 pages) doi:10.1115/1.3261539 History: Received March 28, 1986; Online October 29, 2009


The role of the elasticity of the fluid is investigated in a squeeze film flow, between two parallel coaxial disks. An analysis is done for elastic fluids of low Deborah numbers, where the stress relaxation process is a first order effect to the dominant zero order effect of the viscosity. The constitutive equation of the fluid does not consider the normal-stresses. The results, which show a reduction in the load capacity for a steady speed squeeze action, are consistent with previous experiments in oil-polymer solutions. An improvement in the lubrication performance at dynamic loads is predicted and unlike in Newtonian fluids, the acceleration of the upper disk has a significant effect.

Copyright © 1987 by ASME
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