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Proceedings Paper

Design optimization of layered periodic composites for desired elastodynamic response
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Paper Abstract

In this work, we present a systematic method to design layered periodic composites (PCs) for a prescribed elastodynamic response. Our focus is on optimization problems with equality and/or inequality constraints. Constrained optimization problems are reduced to unconstrained problems, and a genetic algorithm is used to find the optimal design. Symmetric 3-phase layered PCs are considered and the thickness of each phase is chosen as a design parameter. Three cases are presented for illustration purposes: (1) the design of an acoustic filter for maximum bandwidth, (2) the design of an acoustic filter for maximum attenuation, and (3) the design of a PC for maximum attenuation and minimum reflection of acoustic waves.

Paper Details

Date Published: 23 March 2015
PDF: 8 pages
Proc. SPIE 9438, Health Monitoring of Structural and Biological Systems 2015, 94380T (23 March 2015); doi: 10.1117/12.2083048
Show Author Affiliations
H. Sadeghi, Univ. of California, San Diego (United States)
S. Nemat-Nasser, Univ. of California, San Diego (United States)


Published in SPIE Proceedings Vol. 9438:
Health Monitoring of Structural and Biological Systems 2015
Tribikram Kundu, Editor(s)

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