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Damping Characteristics of Mechanical Structures Assembled by Bonding: A Beam in Which Two Steel Strips Are Faced and Joined to Small Butt Straps by an Adhesive

[+] Author Affiliations
Yuichi Nakano

Shonan Institute of Technology, Kanagawa, Japan

Takashi Kobayashi

Numazu College of Technology, Numazu, Shizuoka, Japan

Paper No. IMECE2002-33423, pp. 563-567; 5 pages
doi:10.1115/IMECE2002-33423
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

Machine structures assembled by adhesive bonding are expected to possess a high damping capacity because of the high damping capacity of the adhesive. In this study, the damping characteristics of a beam in which two steel strips are faced and joined to small butt straps by an adhesive have been investigated. The primary aim of this study was to clarify the damping characteristics of adhesively bonded structures and to establish an estimation method for the damping capacity. In the analysis, strain energy distributions in the adhesively bonded beam is derived using the strain energies and damping ratios of the two materials, i.e. the steel strips and the adhesive, which were obtained beforehand in independent experiments. The validity of the proposed estimation method for the damping capacity and the effects of the lengths of the butt straps and vibration modes on the damping capacity were confirmed by experiments. The estimated values of the damping capacity of the beam were shown to be consistent with the experimental results.

Copyright © 2002 by ASME

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