Premium
On the sonic composites with scatterers made from auxetic material
Author(s) -
Mo¸ snegu¸ tu Valerica,
Donescu Stefania
Publication year - 2015
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201510158
Subject(s) - attenuation , superposition principle , acoustic attenuation , materials science , resonator , auxetics , composite material , acoustics , inverse , physics , optics , mathematics , geometry , mathematical analysis , optoelectronics
A finite size periodic array of resonators made from auxetic material embedded into an epoxy matrix is analyzed in this paper. According to the Bragg's theory, the sound attenuation band is due to the superposition of multiple reflected waves inverse proportional to the central distance between resonators. The sound attenuation in such composites is studied using a method that combines the features of the cnoidal method and the genetic algorithm [1‐3]. (© 2015 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)