Study of two-dimensional phononic crystals with property gradients. Application on the deflection of acoustic beams.
Identifieur interne : 000317 ( Hal/Corpus ); précédent : 000316; suivant : 000318Study of two-dimensional phononic crystals with property gradients. Application on the deflection of acoustic beams.
Auteurs : Kun ZongSource :
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Abstract
Phononic structures or crystals made of rows of steel pipes privilege the existence of band gaps and pass bands. The first ones are frequency domains where the incident wave cannot pass through the structure. By introducing small changes about the positioning of the pipes, it is possible to expand greatly the width of the band gaps. By varying the thickness of the pipes in a phononic crystal with a square symmetry, the effect of an incident plane wave which propagates in the direction of the variation is to create thin pass bands in the band gap obtained initially when the pipes have the same thickness. If the incidente wave propagates perpendicularly to the direction of the thickness variation of the pipes, convergent or divergent acoustic lenses which could deviate acoustic beams are created. Finally, when a crystal constituted by the steel pipes is inserted in an array of polyethylene pipes, numerical simulations show that a sound wave can be guided at frequencies corresponding to the pass bands of a steel phononic crystal.
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Application à la déviation de faisceaux acoustiques.</title><author><name sortKey="Zong, Kun" sort="Zong, Kun" uniqKey="Zong K" first="Kun" last="Zong">Kun Zong</name><affiliation><hal:affiliation type="laboratory" xml:id="struct-56485" status="VALID"><orgName>Laboratoire Ondes et Milieux Complexes</orgName><orgName type="acronym">LOMC</orgName><desc><address><country key="FR"></country></address><ref type="url">http://www.univ-lehavre.fr/recherche/lomc/</ref></desc><listRelation><relation active="#struct-300317" type="direct"></relation><relation name="FRE1302" active="#struct-441569" type="direct"></relation></listRelation><tutelles><tutelle active="#struct-300317" type="direct"><org type="institution" xml:id="struct-300317" status="VALID"><orgName>Université du Havre</orgName><desc><address><country key="FR"></country></address></desc></org></tutelle><tutelle name="FRE1302" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID"><idno type="ISNI">0000000122597504</idno><idno type="IdRef">02636817X</idno><orgName>Centre National de la Recherche Scientifique</orgName><orgName type="acronym">CNRS</orgName><date type="start">1939-10-19</date><desc><address><country key="FR"></country></address><ref type="url">http://www.cnrs.fr/</ref></desc></org></tutelle></tutelles></hal:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">HAL</idno><idno type="RBID">Hal:tel-00858085</idno><idno type="halId">tel-00858085</idno><idno type="halUri">https://tel.archives-ouvertes.fr/tel-00858085</idno><idno type="url">https://tel.archives-ouvertes.fr/tel-00858085</idno><date when="2013-07-10">2013-07-10</date><idno type="wicri:Area/Hal/Corpus">000317</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Study of two-dimensional phononic crystals with property gradients. Application on the deflection of acoustic beams.</title><title xml:lang="fr">Etude de cristaux phononiques bidimensionnels à gradient de propriété. Application à la déviation de faisceaux acoustiques.</title><author><name sortKey="Zong, Kun" sort="Zong, Kun" uniqKey="Zong K" first="Kun" last="Zong">Kun Zong</name><affiliation><hal:affiliation type="laboratory" xml:id="struct-56485" status="VALID"><orgName>Laboratoire Ondes et Milieux Complexes</orgName><orgName type="acronym">LOMC</orgName><desc><address><country key="FR"></country></address><ref type="url">http://www.univ-lehavre.fr/recherche/lomc/</ref></desc><listRelation><relation active="#struct-300317" type="direct"></relation><relation name="FRE1302" active="#struct-441569" type="direct"></relation></listRelation><tutelles><tutelle active="#struct-300317" type="direct"><org type="institution" xml:id="struct-300317" status="VALID"><orgName>Université du Havre</orgName><desc><address><country key="FR"></country></address></desc></org></tutelle><tutelle name="FRE1302" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID"><idno type="ISNI">0000000122597504</idno><idno type="IdRef">02636817X</idno><orgName>Centre National de la Recherche Scientifique</orgName><orgName type="acronym">CNRS</orgName><date type="start">1939-10-19</date><desc><address><country key="FR"></country></address><ref type="url">http://www.cnrs.fr/</ref></desc></org></tutelle></tutelles></hal:affiliation></affiliation></author></analytic></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>acoustic lenses</term><term>band gaps</term><term>phononic structures</term><term>wave guides</term></keywords><keywords scheme="mix" xml:lang="fr"><term>bandes interdites</term><term>guides d'onde</term><term>lentilles acoustiques</term><term>structures phononiques</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Phononic structures or crystals made of rows of steel pipes privilege the existence of band gaps and pass bands. The first ones are frequency domains where the incident wave cannot pass through the structure. By introducing small changes about the positioning of the pipes, it is possible to expand greatly the width of the band gaps. By varying the thickness of the pipes in a phononic crystal with a square symmetry, the effect of an incident plane wave which propagates in the direction of the variation is to create thin pass bands in the band gap obtained initially when the pipes have the same thickness. If the incidente wave propagates perpendicularly to the direction of the thickness variation of the pipes, convergent or divergent acoustic lenses which could deviate acoustic beams are created. Finally, when a crystal constituted by the steel pipes is inserted in an array of polyethylene pipes, numerical simulations show that a sound wave can be guided at frequencies corresponding to the pass bands of a steel phononic crystal.</div></front></TEI><hal api="V3"><titleStmt><title xml:lang="en">Study of two-dimensional phononic crystals with property gradients. Application on the deflection of acoustic beams.</title><title xml:lang="fr">Etude de cristaux phononiques bidimensionnels à gradient de propriété. Application à la déviation de faisceaux acoustiques.</title><author role="aut"><persName><forename type="first">Kun</forename><surname>Zong</surname></persName><email>zongkunlomc@sina.com</email><idno type="halauthor">884081</idno><affiliation ref="#struct-56485"></affiliation></author><editor role="depositor"><persName><forename>Kun</forename><surname>Zong</surname></persName><email>zongkunlomc@sina.com</email></editor></titleStmt><editionStmt><edition n="v1" type="current"><date type="whenSubmitted">2013-09-04 15:43:05</date><date type="whenModified">2013-09-05 11:21:09</date><date type="whenReleased">2013-09-05 11:21:09</date><date type="whenProduced">2013-07-10</date><date type="whenEndEmbargoed">2013-09-04</date><ref type="file" target="https://tel.archives-ouvertes.fr/tel-00858085/document"><date notBefore="2013-09-04"></date></ref><ref type="file" n="1" target="https://tel.archives-ouvertes.fr/tel-00858085/file/rapport_theseZONG.pdf"><date notBefore="2013-09-04"></date></ref></edition><respStmt><resp>contributor</resp><name key="186234"><persName><forename>Kun</forename><surname>Zong</surname></persName><email>zongkunlomc@sina.com</email></name></respStmt></editionStmt><publicationStmt><distributor>CCSD</distributor><idno type="halId">tel-00858085</idno><idno type="halUri">https://tel.archives-ouvertes.fr/tel-00858085</idno><idno type="halBibtex">zong:tel-00858085</idno><idno type="halRefHtml">Acoustique [physics.class-ph]. Université du Havre, 2013. Français</idno><idno type="halRef">Acoustique [physics.class-ph]. Université du Havre, 2013. Français</idno></publicationStmt><seriesStmt><idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno><idno type="stamp" n="UNIV-LEHAVRE">Université du Havre</idno></seriesStmt><notesStmt></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Study of two-dimensional phononic crystals with property gradients. Application on the deflection of acoustic beams.</title><title xml:lang="fr">Etude de cristaux phononiques bidimensionnels à gradient de propriété. Application à la déviation de faisceaux acoustiques.</title><author role="aut"><persName><forename type="first">Kun</forename><surname>Zong</surname></persName><email>zongkunlomc@sina.com</email><idno type="halAuthorId">884081</idno><affiliation ref="#struct-56485"></affiliation></author></analytic><monogr><imprint><date type="dateDefended">2013-07-10</date></imprint><authority type="institution">Université du Havre</authority><authority type="supervisor">Olivier. Lenoir(olivier.lenoir@univ-lehavre.fr)</authority><authority type="jury">J. O. Vasseur P.U IUFM Nord-Pas de Calais/Université d'Artois</authority><authority type="jury">E. Akmansoy Maître de Conférences HDR, Université Paris IX Orsay</authority><authority type="jury">J.-M. Conoir Directeur de Recherche CNRS, Université Paris VI</authority><authority type="jury">M. V. Predoï P. U. Université Polytechnique de Bucarest</authority><authority type="jury">O. Lenoir P. U. Université du Havre</authority><authority type="jury">H. Franklin P. U. Université du Havre</authority></monogr></biblStruct></sourceDesc><profileDesc><langUsage><language ident="fr">French</language></langUsage><textClass><keywords scheme="author"><term xml:lang="en">phononic structures</term><term xml:lang="en">band gaps</term><term xml:lang="en">acoustic lenses</term><term xml:lang="en">wave guides</term><term xml:lang="fr">structures phononiques</term><term xml:lang="fr">bandes interdites</term><term xml:lang="fr">lentilles acoustiques</term><term xml:lang="fr">guides d'onde</term></keywords><classCode scheme="halDomain" n="phys.meca.acou">Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]</classCode><classCode scheme="halDomain" n="spi.acou">Engineering Sciences [physics]/Acoustics [physics.class-ph]</classCode><classCode scheme="halTypology" n="THESE">Theses</classCode></textClass><abstract xml:lang="en">Phononic structures or crystals made of rows of steel pipes privilege the existence of band gaps and pass bands. The first ones are frequency domains where the incident wave cannot pass through the structure. By introducing small changes about the positioning of the pipes, it is possible to expand greatly the width of the band gaps. By varying the thickness of the pipes in a phononic crystal with a square symmetry, the effect of an incident plane wave which propagates in the direction of the variation is to create thin pass bands in the band gap obtained initially when the pipes have the same thickness. If the incidente wave propagates perpendicularly to the direction of the thickness variation of the pipes, convergent or divergent acoustic lenses which could deviate acoustic beams are created. Finally, when a crystal constituted by the steel pipes is inserted in an array of polyethylene pipes, numerical simulations show that a sound wave can be guided at frequencies corresponding to the pass bands of a steel phononic crystal.</abstract><abstract xml:lang="fr">Des structures phononiques ou cristaux phononiques constitués de réseaux ordonnés de tubes en acier favorisent l'existence de bandes interdites et de bandes passantes. Les premières sont des domaines fréquentiels où une onde incidente ne peut traverser de telles structures. En introduisant de légères variations sur le positionnement des tubes, il est possible d'élargir considérablement les bandes interdites. En faisant varier l'épaisseur des tubes dans un cristal phononique à symétrie carrée, l'effet d'une onde plane incidente parallèlement à la direction de variation est de créer de fines bandes passantes dans la bande interdite obtenue initialement lorsque les tubes ont même épaisseur. Si l'on envoie l'onde incidence perpendiculairement à la direction de variation de l'épaisseur des tubes, on crée des lentilles acoustiques convergentes ou divergentes déviant les faisceaux acoustiques. Enfin, lorsque dans un cristal composé de tubes en polyéthylène on insère une allée de tubes en acier en forme de virages, les simulations numériques montrent qu'une onde acoustique peut être guidée aux fréquences correspondant aux bandes passantes du cristal phononique entièrement en acier.</abstract></profileDesc></hal></record>Pour manipuler ce document sous Unix (Dilib)
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