Modeling of Constrained Layer Damping in Trusses

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Report Number: WL-TR-91-3078 Volume II, pages ECC-1 to ECC-8
Author(s): Slater, Joseph C., Inman, Daniel J., Belvin, W. Keith
Corporate Author(s): State University of New York at Buffalo
Laboratory: Wright Laboratory
Date of Publication: 1991-08
Pages: 8
DoD Project: 2401
DoD Task: 240104
Identifier: This paper is part of a conference proceedings. See ADA241312

Abstract:
This work reexamines the use of constrained layer damping for controlling the lower modes of vibration of a large flexible truss. The device used to suppress vibrations is a "viscoelastic strut". The design, modeling and experimental verification of the viscoelastic strut as well as the three longeron truss with and without the constrained layer treatment is presented. A complete finite element analysis (FEA) and experimental verification will be presented. The experimental results are represented by examining transfer functions and modal damping ratios as well as a video presentation of the effectiveness of the viscoelastic approach for vibration suppression.

Provenance: University of Colorado Colorado Springs, Kraemer Family Library

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