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An Investigation of Friction Dynamic of Two Coupled Mass-Spring-Damper System With Visco-Elastic Contact

[+] Author Affiliations
A. M. A. El-Butch, A. F. Fahim

Helwan University, Cairo, Egypt

Paper No. IMECE2010-38571, pp. 167-172; 6 pages
doi:10.1115/IMECE2010-38571
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 13: Sound, Vibration and Design
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4450-2
  • Copyright © 2010 by ASME

abstract

The friction force between coupled machine members in relative motion exerts sometimes significant influence on system dynamic behavior, giving rise to undesirable friction-induced vibrations. The aim of this paper is to investigate the contribution of each design parameter and operating conditions on the system dynamic performance of a metallic mass sliding on a polymeric lower base, the mass is excited from its support by a harmonic input velocity. The governing equations are solved numerically and results showed that, for high excitation amplitude, an increase in the negative slope of the friction-velocity curve which leads to an increase in the friction-induced vibrations. Also system with high natural frequency of the lower mass has lower self-excited vibrations.

Copyright © 2010 by ASME
Topics: Friction , Dampers , Springs

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