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Proceedings Paper

Initial studies into the use of active constrained-layer damping for controlling resonant vibration
Author(s): Ben Azvine; Geoffrey R. Tomlinson; R. J. Wynne
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Paper Abstract

The work described in this paper is concerned with controlling the strain of the constraining layer of a composite structure in such a way as to enhance the shear generated in the viscoelastic material and hence improve the overall damping of the composite structure. The results have indicated that this concept of active damping produces very effective levels of vibration suppression. In the case of cantilever beams the first two modes can be almost eliminated when velocity feedback of the beam tip is used. The results show that the addition of active control and passive damping in a single structure combines the advantages of passive damping in the higher modes and active control in the lower modes. In addition active damping as defined in this paper produces a fail safe mechanism in case of instability occurring in the feedback loop since passive damping is always present.

Paper Details

Date Published: 1 May 1994
PDF: 12 pages
Proc. SPIE 2193, Smart Structures and Materials 1994: Passive Damping, (1 May 1994); doi: 10.1117/12.174092
Show Author Affiliations
Ben Azvine, Staffordshire Univ. (United Kingdom)
Geoffrey R. Tomlinson, Univ. of Manchester (United Kingdom)
R. J. Wynne, Univ. of Manchester (United Kingdom)

Published in SPIE Proceedings Vol. 2193:
Smart Structures and Materials 1994: Passive Damping
Conor D. Johnson, Editor(s)

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