Dynamic Characteristics of Specialty Composite Structures with Embedded Damping Layers

[+] Author and Article Information
D. A. Saravanos, J. M. Pereira

Structural Mechanics Branch, NASA-Lewis Research Center, 21000 Brookpark Rd., MS-49-8, Cleveland, OH 44135

J. Vib. Acoust 117(1), 62-69 (Jan 01, 1995) (8 pages) doi:10.1115/1.2873868 History: Revised August 01, 1993; Online February 26, 2008


Damping mechanics for predicting the damped dynamic characteristics in specialty composite structures with compliant interlaminar damping layers are presented. Finite-element based mechanics incorporating a discrete layer (or layer-wise) laminate damping theory are utilized to represent general laminate configurations in terms of lay-up and fiber orientation angles, cross-sectional thickness, shape and boundary conditions. Evaluations of the method with exact solutions and experimental data illustrate its accuracy. Additional parametric studies demonstrate the unique capability of angle-ply composite laminates with cocured interlaminar damping layers to significantly enhance structural damping.

Copyright © 1995 by The American Society of Mechanical Engineers
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