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Proceedings Paper

Dissipation-triggered phenomena in periodic acoustic metamaterials
Author(s): Michael J. Frazier; Mahmoud I. Hussein
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Paper Abstract

In designing a periodic acoustic metamaterial it is possible to have one or more of the constituent material phases to be damped (i.e., lossy/dissipative), for example by using a viscoelastic material such as rubber. The presence of damping results in temporal attenuation of the acoustic/elastic waves as they freely propagate through space in the periodic media. In this work we develop Bloch wave propagation models for damped periodic acoustic metamaterials and study the effects of damping on the dispersion relation. We demonstrate several intriguing phenomena that get triggered due to the presence of inherent dissipation.

Paper Details

Date Published: 20 April 2012
PDF: 9 pages
Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 83481W (20 April 2012); doi: 10.1117/12.915499
Show Author Affiliations
Michael J. Frazier, Univ. of Colorado at Boulder (United States)
Mahmoud I. Hussein, Univ. of Colorado at Boulder (United States)

Published in SPIE Proceedings Vol. 8348:
Health Monitoring of Structural and Biological Systems 2012
Tribikram Kundu, Editor(s)

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