Granular collision lubrication: Experimental investigation and comparison to theory

Document Type

Article

Publication Date

10-1-2007

Abstract

An experimental investigation of the friction and lift characteristics of granular lubrication is presented. Experiments are carried out to demonstrate the vertical displacement (lift) observed in an annular shear cell apparatus. Results are presented for the friction coeffecient as a function of the rotational speed and the applied load for several surface roughness combinations. Simulations of the kinetic theory for the granular material are performed and compared to the experimental results. The experiments formation provide an evidence for the formation of granular lift between two disks undergoing sliding motion. Copyright © 2007 by ASME.

Publication Source (Journal or Book title)

Journal of Tribology

First Page

923

Last Page

932

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