Internal Stresses in Contact of a Rough Body and a Viscoelastic Layered Semi-Infinite Plane

[+] Author and Article Information
Irina Goryacheva

Institute for Problems in Mechanics, Russian Academy of Sciences, Moscow Russia 117526

Farshid Sadeghi, David A. Nickel

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288

J. Tribol 118(1), 131-136 (Jan 01, 1996) (6 pages) doi:10.1115/1.2837068 History: Received September 08, 1994; Revised April 25, 1995; Online January 24, 2008


A model has been developed to investigate the effects of a rough elastic indenter in sliding contact with a viscoelastic layer bonded to an elastic semi-infinite plane. The viscoelastic layer is modeled as a one-dimensional Maxwell solid (small strain) while the substrate of the semi-infinite plane is modeled as a two-dimensional elastic half plane. The Fredholm integral equation of the second kind was obtained to determine the contact stresses. The results indicate that the viscoelastic properties of the layer and the velocity of the indenter significantly affect the contact pressure and internal stress distributions. The viscoelastic layer causes the pressure and internal stresses to become nonsymmetrical. High asperity densities reduce the amplitude of maximum shear stress at a fixed depth below the surface. Results are also presented for various coefficients of friction.

Copyright © 1996 by The American Society of Mechanical Engineers
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