Wave Propagation in Viscoelastic Laminates

[+] Author and Article Information
M. Stern, A. Bedford, C. H. Yew

Department of Aerospace and Engineering Mechanics, The University of Texas at Austin, Austin, Texas

J. Appl. Mech 38(2), 448-454 (Jun 01, 1971) (7 pages) doi:10.1115/1.3408796 History: Received May 23, 1969; Revised January 20, 1970; Online July 12, 2010


For a simplified model of a laminated medium consisting of alternating layers of elastic and viscoelastic materials, the dispersion and attenuation characteristics for “plane,” longitudinal waves propagating in the direction of the layering are obtained. The dispersion and attenuation curves depend on a structure parameter involving the thickness of the layers and can deviate significantly from corresponding results for a continuum “effective-modulus” model. Curves are presented for a specific case with representative material parameters showing the effect of structure and of variations in the parameters of the composite.

Copyright © 1971 by ASME
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