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Vibration Damping in Bolted Friction Beam-Columns

[+] Author Affiliations
Hadjila Bournine, David J. Wagg, Simon Neild

University of Bristol, Bristol, UK

Paper No. DETC2009-87184, pp. 365-372; 8 pages
doi:10.1115/DETC2009-87184
From:
  • ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • San Diego, California, USA, August 30–September 2, 2009
  • Conference Sponsors: Design Engineering Division and Computers in Engineering Division
  • ISBN: 978-0-7918-4898-2 | eISBN: 978-0-7918-3856-3
  • Copyright © 2009 by ASME

abstract

In this paper we consider dynamic friction within a bolted structure deliberately used to improve damping properties of engineering structures. The model considered for this paper consists of two steel beam-columns bolted together allowing dynamic friction to occur at the interface. The theoretical analysis presented here, include two physical approaches. The first approach is based on the optimization of the bolt tension to dissipate the maximum vibration energy by the structure. As a result of this analysis we develop analytical expressions for the energy dissipated by friction damping and optimal bolt tension for maximum energy dissipation. The second part of the analysis deals with the effect of friction on the mechanical properties of the structure. In this analysis, we define analytical expressions for the vibration modes before and after slip occurs. We also defined the stress profile across the column cross-section. The theoretical analysis was validated by a set of experimental results.

Copyright © 2009 by ASME
Topics: Friction , Damping , Vibration

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