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Passive Control of a Rectangular Plate Using Strategic Cut-Outs

[+] Author Affiliations
Manfred H. Ulz

Technische Universitat Graz

S. Eren Semercigil

Victoria University

Paper No. IMECE2005-79836, pp. 1799-1806; 8 pages
doi:10.1115/IMECE2005-79836
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Dynamic Systems and Control, Parts A and B
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 0-7918-4216-9 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

Perforations and cut-outs are widely used in plates and shells to facilitate heat dissipation, and to provide access to different components. It is generally expected that the dynamic behavior will deteriorate because of the presence of the cut-out. As a result, vibrations due to an external excitation will be larger than those of the case without a cut-out. Summary of a numerical study is presented in this paper to investigate the possibility of making a rectangular cut-out for the purposes of employing this cut-out as a Dynamic Vibration Absorber. The concept is similar to that of the classical case. However, instead of adding an auxiliary structure, the part of the plate is suggested to act as an absorber in the form of a “designed” cut-out. The process involves numerical modeling using standard finite elements. The plate is excited with an impact force to insure the participation of the multiple modes of vibration. The numerical predictions are presented in the form of design charts to indicate the conditions under which vibration control may be possible.

Copyright © 2005 by ASME

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