Band structure analysis of leaky Bloch waves in 2D phononic crystal plates.
Identifieur interne : 000006 ( PubMed/Corpus ); précédent : 000005; suivant : 000007Band structure analysis of leaky Bloch waves in 2D phononic crystal plates.
Auteurs : Matteo Mazzotti ; Marco Miniaci ; Ivan BartoliSource :
- Ultrasonics [ 1874-9968 ] ; 2016.
Abstract
A hybrid Finite Element-Plane Wave Expansion method is presented for the band structure analysis of phononic crystal plates with two dimensional lattice that are in contact with acoustic half-spaces. The method enables the computation of both real (propagative) and imaginary (attenuation) components of the Bloch wavenumber at any given frequency. Three numerical applications are presented: a benchmark dispersion analysis for an oil-loaded Titanium isotropic plate, the band structure analysis of a water-loaded Tungsten slab with square cylindrical cavities and a phononic crystal plate composed of Aurum cylinders embedded in an epoxy matrix.
DOI: 10.1016/j.ultras.2016.10.006
PubMed: 27776276
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<author><name sortKey="Miniaci, Marco" sort="Miniaci, Marco" uniqKey="Miniaci M" first="Marco" last="Miniaci">Marco Miniaci</name>
<affiliation><nlm:affiliation>University of Le Havre, Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294, 75 Rue Bellot, 76600 Le Havre, France.</nlm:affiliation>
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<author><name sortKey="Bartoli, Ivan" sort="Bartoli, Ivan" uniqKey="Bartoli I" first="Ivan" last="Bartoli">Ivan Bartoli</name>
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<author><name sortKey="Miniaci, Marco" sort="Miniaci, Marco" uniqKey="Miniaci M" first="Marco" last="Miniaci">Marco Miniaci</name>
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<series><title level="j">Ultrasonics</title>
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<front><div type="abstract" xml:lang="en">A hybrid Finite Element-Plane Wave Expansion method is presented for the band structure analysis of phononic crystal plates with two dimensional lattice that are in contact with acoustic half-spaces. The method enables the computation of both real (propagative) and imaginary (attenuation) components of the Bloch wavenumber at any given frequency. Three numerical applications are presented: a benchmark dispersion analysis for an oil-loaded Titanium isotropic plate, the band structure analysis of a water-loaded Tungsten slab with square cylindrical cavities and a phononic crystal plate composed of Aurum cylinders embedded in an epoxy matrix.</div>
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<Abstract><AbstractText NlmCategory="UNASSIGNED">A hybrid Finite Element-Plane Wave Expansion method is presented for the band structure analysis of phononic crystal plates with two dimensional lattice that are in contact with acoustic half-spaces. The method enables the computation of both real (propagative) and imaginary (attenuation) components of the Bloch wavenumber at any given frequency. Three numerical applications are presented: a benchmark dispersion analysis for an oil-loaded Titanium isotropic plate, the band structure analysis of a water-loaded Tungsten slab with square cylindrical cavities and a phononic crystal plate composed of Aurum cylinders embedded in an epoxy matrix.</AbstractText>
<CopyrightInformation>Copyright © 2016 Elsevier B.V. All rights reserved.</CopyrightInformation>
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<KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Attenuation</Keyword>
<Keyword MajorTopicYN="N">Band structure</Keyword>
<Keyword MajorTopicYN="N">Finite element method</Keyword>
<Keyword MajorTopicYN="N">Leaky Bloch waves</Keyword>
<Keyword MajorTopicYN="N">Phononic crystals</Keyword>
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