About: HOMOGENIZATION OF THE ACOUSTIC TRANSMISSION THROUGH PERFORATED LAYER

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The paper deals with transmission conditions imposed on the interface plane separating two halfspaces occupied by the acoustic medium. The conditions are obtained as the two-scale homogenization limit of the standard acoustic problem imposed in the layer with the perforated periodic structure embedded inside. Both the characteristic scale of the perforations and the layer thickness are parameterized by a small parameter. The limit model involving some homogenized coefficients governs the interface discontinuity of the acoustic pressure associated with the two halfspaces and the magnitude of the fictitious transversal acoustic velocity. This novel approach presents a new alternative to the usual description of the acoustic impedance, which relies on a rough averaging the quasiexperimental data. The paper deals with transmission conditions imposed on the interface plane separating two halfspaces occupied by the acoustic medium. The conditions are obtained as the two-scale homogenization limit of the standard acoustic problem imposed in the layer with the perforated periodic structure embedded inside. Both the characteristic scale of the perforations and the layer thickness are parameterized by a small parameter. The limit model involving some homogenized coefficients governs the interface discontinuity of the acoustic pressure associated with the two halfspaces and the magnitude of the fictitious transversal acoustic velocity. This novel approach presents a new alternative to the usual description of the acoustic impedance, which relies on a rough averaging the quasiexperimental data. (en) Článek pojednává o transmisních podmínkách na rozhraní mezi dvěma poloprostory vyplněnými akustickým médiem. Podmínky jsou získány dvouškálovou homogenizací standardní úlohy pro akustické médium v oblasti perforované překážky s periodickou strukturou. Charakteristický rozměr perforací i tloušťky je parametrizován malým parametrem asymptoticky se blížícím nule. Limitní model obsahuje homogenizované koeficienty, které upravují fiktivní transversální akustickou rychlost a tlakovou nespojitost. Tento nový přístup reprezentuje alternativu k dosud používaným kvaziempirickým popisům akustické impedance. (cs)
Title	HOMOGENIZATION OF THE ACOUSTIC TRANSMISSION THROUGH PERFORATED LAYER Homogenizace akustické transmise perforovanou vrstvou (cs) HOMOGENIZATION OF THE ACOUSTIC TRANSMISSION THROUGH PERFORATED LAYER (en)
skos:prefLabel	HOMOGENIZATION OF THE ACOUSTIC TRANSMISSION THROUGH PERFORATED LAYER Homogenizace akustické transmise perforovanou vrstvou (cs) HOMOGENIZATION OF THE ACOUSTIC TRANSMISSION THROUGH PERFORATED LAYER (en)
skos:notation	RIV/49777513:23640/07:00000021!RIV08-MSM-23640___
http://linked.open.../vavai/riv/strany	510-512
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(1M06031), P(GA101/07/1471)
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Rohan, Eduard Lukeš, Vladimír
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Západočeská univerzita v Plzni / Nové technologie - výzkumné centrum
http://linked.open...dnocenehoVysledku	424718
http://linked.open...ai/riv/idVysledku	RIV/49777513:23640/07:00000021
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	acoustic waves; perforated layer; acoustic transmission; homogenization (en)
http://linked.open.../riv/klicoveSlovo	acoustic waves homogenization perforated layer acoustic transmission
http://linked.open...ontrolniKodProRIV	[5124B3315F7C]
http://linked.open...v/mistoKonaniAkce	Reading
http://linked.open...i/riv/mistoVydani	Reading
http://linked.open...i/riv/nazevZdroje	Proceedings of Waves 2007
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Materials and components for environment protection Finite element modelling of linear, non-linear and multiscale effects in wave propagation in solids and heterogeneous media
http://linked.open...UplatneniVysledku	2007
http://linked.open...iv/tvurceVysledku	Lukeš, Vladimír Rohan, Eduard
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2007-01-01 (xsd:date)
number of pages	3 (xsd:int)
http://purl.org/ne...btex#hasPublisher	University of Reading
https://schema.org/isbn	0-7049-9880-7
http://localhost/t...ganizacniJednotka	23640

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