About: Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers

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About: Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We consider structures like the mufer of the engine exhaust, where the acoustic waves propagate through periodically perforated barriers. Recently we proposed a homogenized model of the acoustic transmission through the layer with embedded rigid obstacles of arbitrary shapes, which represent the perforation. The homogenized model describes relationship between jump of the acoustic pressures at the discontinuity interface and the transverse acoustic velocity, on introducing an in-layer acoustic pressure which describes wave propagation along the interface. The coupling between the transversely and the tangential acoustic velocities may become important for certain types of perforations. A sensitivity study was done which reveals remarkable dependence of wave transmission losses on the geometry of the perforation. Examples of 3D perforation geometries were treated. We consider structures like the mufer of the engine exhaust, where the acoustic waves propagate through periodically perforated barriers. Recently we proposed a homogenized model of the acoustic transmission through the layer with embedded rigid obstacles of arbitrary shapes, which represent the perforation. The homogenized model describes relationship between jump of the acoustic pressures at the discontinuity interface and the transverse acoustic velocity, on introducing an in-layer acoustic pressure which describes wave propagation along the interface. The coupling between the transversely and the tangential acoustic velocities may become important for certain types of perforations. A sensitivity study was done which reveals remarkable dependence of wave transmission losses on the geometry of the perforation. Examples of 3D perforation geometries were treated. (en)
Title	Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers (en)
skos:prefLabel	Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers (en)
skos:notation	RIV/49777513:23520/09:00501727!RIV10-MSM-23520___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(1M06031), P(GA101/07/1471)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Rohan, Eduard Lukeš, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Západočeská univerzita v Plzni / Fakulta aplikovaných věd
http://linked.open...dnocenehoVysledku	317730
http://linked.open...ai/riv/idVysledku	RIV/49777513:23520/09:00501727
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	acoustic transmission; homogenization; perforated interface (en)
http://linked.open.../riv/klicoveSlovo	homogenization acoustic transmission perforated interface
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[14270BCA2642]
http://linked.open...i/riv/nazevZdroje	PAMM - Proceedings in Applied Mathematics and Mechanics
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	2009
http://linked.open...v/svazekPeriodika	8
http://linked.open...iv/tvurceVysledku	Lukeš, Vladimír Rohan, Eduard
issn	1617-7061
number of pages	2 (xsd:int)
http://localhost/t...ganizacniJednotka	23520
is http://linked.open...avai/riv/vysledek of	Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers

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