About: Computational analysis of acoustic transmission through periodically perforated interfaces

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The objective of the paper is to demonstrate the homogenization approach applied to modelling the acoustic transmission on perforated interfaces embedded in the acoustic fluid. We assume a layer, with periodically perforated obstacles, separating two half-spaces filled with the fluid. The homogenization method provides limit transmission conditions which can be prescribed at the homogenized surface representing the ``limit'' interface. The conditions describe relationship between jump of the acoustic pressures and the transversal acoustic velocity, on introducing the ``in-layer pressure'' which describes wave propagation in the tangent directions with respect to the interface.This approach may serve as a relevant tool for optimal design of devices aimed at attenuation of the acoustic waves, such as the engine exhaust mufflers or other structures fitted with sieves and grillages. We present numerical examples of wave propagation in a muffler-like structure illustrating viability of The objective of the paper is to demonstrate the homogenization approach applied to modelling the acoustic transmission on perforated interfaces embedded in the acoustic fluid. We assume a layer, with periodically perforated obstacles, separating two half-spaces filled with the fluid. The homogenization method provides limit transmission conditions which can be prescribed at the homogenized surface representing the ``limit'' interface. The conditions describe relationship between jump of the acoustic pressures and the transversal acoustic velocity, on introducing the ``in-layer pressure'' which describes wave propagation in the tangent directions with respect to the interface.This approach may serve as a relevant tool for optimal design of devices aimed at attenuation of the acoustic waves, such as the engine exhaust mufflers or other structures fitted with sieves and grillages. We present numerical examples of wave propagation in a muffler-like structure illustrating viability of (en)
Title	Computational analysis of acoustic transmission through periodically perforated interfaces Computational analysis of acoustic transmission through periodically perforated interfaces (en)
skos:prefLabel	Computational analysis of acoustic transmission through periodically perforated interfaces Computational analysis of acoustic transmission through periodically perforated interfaces (en)
skos:notation	RIV/49777513:23520/09:00501666!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	307933
http://linked.open...ai/riv/idVysledku	RIV/49777513:23520/09:00501666
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Acoustic transmission; homogenization; perforated layer; numerical modelling (en)
http://linked.open.../riv/klicoveSlovo	homogenization numerical modelling Acoustic transmission perforated layer
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[488E1350269C]
http://linked.open...i/riv/nazevZdroje	Applied and Computational 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	3
http://linked.open...iv/tvurceVysledku	Lukeš, Vladimír Rohan, Eduard
issn	1802-680X
number of pages	10 (xsd:int)
http://localhost/t...ganizacniJednotka	23520
is http://linked.open...avai/riv/vysledek of	Computational analysis of acoustic transmission through periodically perforated interfaces Computational analysis of acoustic transmission through periodically perforated interfaces Computational analysis of acoustic transmission through periodically perforated interfaces Computational analysis of acoustic transmission through periodically perforated interfaces

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