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A New Regularization of Coulomb Friction

[+] Author Affiliations
D. Dane Quinn

University of Akron, Akron, OH

Paper No. IMECE2002-32402, pp. 361-367; 7 pages
doi:10.1115/IMECE2002-32402
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Design Engineering
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Design Engineering Division
  • ISBN: 0-7918-3628-2 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

We present a new regularization for Coulomb’s law of friction for single point contacts. This modification permits a straightforward application of friction within existing numerical simulations. Similar to existing regularizations, the proposed modification to Coulomb frictions leads to continuous representation of friction and does not require the separate identification of transitions between slip and stick. However, unlike more common regularizations, the current reformulation maintains an equilibrium structure identical to the classical, discontinuous form of Coulomb friction. The implementation and performance of this regularization is illustrated by a simple one degree-of-freedom system in which stick-slip motion induced by sliding friction is of primary importance. The simulations illustrate the existence of non-trivial equilibrium states and the ability of the current regularization toprovide a computationally efficient scheme for simulating the dissipation arising from sliding friction.

Copyright © 2002 by ASME
Topics: Friction , Coulombs

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