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Hysteresis Damping in Vibration Response of a Block in Elastic-Plastic Rough Surface Contact

[+] Author Affiliations
A. Sepehri, K. Farhang

Southern Illinois University Carbondale, Carbondale, IL

Paper No. IJTC2009-15221, pp. 363-365; 3 pages
doi:10.1115/IJTC2009-15221
From:
  • ASME/STLE 2009 International Joint Tribology Conference
  • ASME/STLE 2009 International Joint Tribology Conference
  • Memphis, Tennessee, USA, October 19–21, 2009
  • Conference Sponsors: Tribology Division
  • ISBN: 978-0-7918-4895-1 | eISBN: 978-0-7918-3862-4
  • Copyright © 2009 by ASME

abstract

The differences in load and unload paths in an elastic-plastic contact of a rough surface and a flat leads to hysteretic energy loss. The nonlinear normal vibration response of the block is examined when subject to an external compressive load. The vibration response corresponds to the application of a constant compressive external It is shown that vibration decay rate is constant as opposed to the exponential decay rate for the linear vibrating systems. Closed form equations relating contact damping and contact natural frequency to the surface parameters are given.

Copyright © 2009 by ASME

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