Energy Dissipation in Contact Friction: Constant Normal and Cyclic Tangential Loading

[+] Author and Article Information
L. E. Goodman, C. B. Brown

Department of Aeronautics and Engineering Mechanics, University of Minnesota, Minneapolis, Minn.

J. Appl. Mech 29(1), 17-22 (Mar 01, 1962) (6 pages) doi:10.1115/1.3636453 History: Received December 30, 1960; Online September 16, 2011


When a sphere is held between parallel flat surfaces by means of a constant clamping pressure and is then subjected to a cyclic tangential displacement parallel to the flats, energy is dissipated at the contacts. This occurs even when the maximum tangential force, T*, is less than Tmax , the force which will just produce slip over the entire contact surface. Measurements of the energy dissipated per cycle and of the hysteresis loop shapes have been found to agree well with the theory of Mindlin and Deresiewicz in the range investigated, 0.45 < δ*/δmax < 1. The sphere diameter and the normal load appear as parameters only in the way demanded by the theory. In the range investigated energy dissipation appears to be primarily a surface phenomenon and not one due to material damping. The material employed has been AISI 316 steel.

Copyright © 1962 by ASME
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