Constrained viscoelastic layer damping of thick aluminum plates
Subtitle: design, analysis and testing
By: by Michael J. Bateman, K. Steven Kim, Young S. Shin
Contributors: Kim, K. Steven; Shin, Y. S.; Naval Postgraduate School (U.S.). Dept. of Mechanical Engineering
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1990
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Number of pages: 125
Subjects: DAMPING; NOISE REDUCTION
Other titles: NPS-69-90-5.
Description: Modern naval warfare has been increasingly dependent upon the acoustic silencing of the      participants. Constrained viscoelastic layer damping of vibrating elements is one method      which can be used to meet acoustic silencing goals. This paper considers constrained      viscoelastic layer damping treatments applied to a thick aluminum plate, including single layer,      double layer, a milled pocket plate, and a milled 'floating element' configuration. High modal      damping values were obtained for each damping configuration. The Modal Strain Energy      method, using finite element analysis to estimate modal loss factors, was investigated for use      as a tool in constrained viscoelastic layer damping design. A comparison of experimentally      measured frequency response and modal loss factors with those predicted by the modal stain      energy method is presented to confirm the possible use of the modal strain energy method as      a design tool. Keywords: Vibration, Damping, Viscoelastic material, Constrained layer      damping. (JS)
Notes: Cover title.

"NPS-69-90-5."

"Period: 1 June, 1989, - 31 May 1990."

"Department of Mechanical Engineering."

Includes bibliographical references (p. 122)

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