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Proceedings Paper

Bending vibration control of composite plate structures through intelligent constrained-layer treatments
Author(s): I. Y. Shen
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Paper Abstract

This paper applies intelligent constrained layer (ICL) damping treatments to control bending vibration of composite plate structures. The ICL damping treatment consists of a viscoelastic shear layer sandwiched between a piezoelectric constraining cover sheet and the structure to be dampened. According to measured vibration response of the structure, a feedback controller regulates in-plane deformation of the piezoelectric layer to perform active vibration control. In this paper, the equation of motion and boundary conditions governing the bending vibration of a composite plate possessing bending-stretching coupling stiffness with ICL damping treatments are derived. Finally, a numerical example is illustrated on an infinite composite plate consisting of a (45 degree(s)/-45 degree(s)) angle-ply laminate subjected to plane harmonic wave excitations. Compared with existing passive constrained layer treatments, numerical results show that the ICl damping treatment can produce significant damping. In addition, there are certain orientations, determined by the structures of the composite laminate, along which the vibration amplitude can be reduced to a minimum.

Paper Details

Date Published: 1 May 1994
PDF: 11 pages
Proc. SPIE 2193, Smart Structures and Materials 1994: Passive Damping, (1 May 1994); doi: 10.1117/12.174090
Show Author Affiliations
I. Y. Shen, Univ. of Washington (United States)

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

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