TITLE

High optimization process for increasing the attenuation properties of acoustic metamaterials by means of the creation of defects

AUTHOR(S)
Romero-García, V.; Sánchez-Pérez, J. V.; García-Raffi, L. M.; Herrero, J. M.; García-Nieto, S.; Blasco, X.
PUB. DATE
December 2008
SOURCE
Applied Physics Letters;12/1/2008, Vol. 93 Issue 22, p223502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An improvement in the attenuation capabilities of acoustic metamaterials by means of the creation of defects is considered here as a multiobjective optimization problem. From this point of view, it is possible to define the optimum strategy in the creation of defects to achieve an important increase in acoustic attenuation in a predetermined range of frequencies. A powerful multiobjective optimization algorithm called evMOGA has been used to solve this problem. The study has been restricted to the case of a two-dimensional sonic crystal formed by rigid cylinders in air, the defects being vacancies in the initial structure.
ACCESSION #
35763909

 

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