Roughness-Induced Transient Loading at a Sliding Contact During Start-Up

[+] Author and Article Information
A. Anand, A. Soom

Department of Mechanical and Aerospace Engineering, State University of New York at Buffalo, Buffalo, N.Y. 14260

J. Tribol 106(1), 49-53 (Jan 01, 1984) (5 pages) doi:10.1115/1.3260866 History: Received February 17, 1983; Online October 29, 2009


The effects of normal contact vibrations, horizontal rider dynamics, and surface texture inputs are combined to examine dynamic loads at a contact during acceleration from rest to a steady state velocity. A constant sliding friction coefficient is assumed. The surface input is either a sine wave or a quasi-random function. The nondimensionalized system equations are solved numerically for a variety of system and input parameter combinations. The most interesting responses occur when the acceleration duration includes a number of periods of at least one of the system resonant frequencies. It would appear that surface-roughness and waviness can cause the normal motions and force fluctuations that occur during the transitions from static to sliding friction.

Copyright © 1984 by ASME
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