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  • 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. The limit model involving some homogenized coefcients governs the interface discontinuity of the acoustic pressure associated with the two halfspaces and the magnitude of the ctitious transversal acoustic velocity. By numerical examples we illustrate this novel approach of modeling the acoustic impedance of perforated interfaces.
  • 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. The limit model involving some homogenized coefcients governs the interface discontinuity of the acoustic pressure associated with the two halfspaces and the magnitude of the ctitious transversal acoustic velocity. By numerical examples we illustrate this novel approach of modeling the acoustic impedance of perforated interfaces. (en)
  • Článek se zabývá přenosovou podmínkou na hranici dvou oblastí vyplněných akustickým médiem. Přenosová podmínka je získána jako výsledek dvouškálového limitního procesu homogenizace aplikovaného na standartní problém akustického přenosu na hranici (s periodickou strukturou) oddělující oblasti. Limitní model zahrnuje homogenizované koeficienty, které určují chování tlakové nespojitosti na rozhraní. Numerické příklady demonstrují možnosti navržené metody. (cs)
Title
  • Modelling of acoustic transmission through perforated layer
  • Modelling of acoustic transmission through perforated layer (en)
  • Modelování akustického přenosu skrz perforovanou překážku (cs)
skos:prefLabel
  • Modelling of acoustic transmission through perforated layer
  • Modelling of acoustic transmission through perforated layer (en)
  • Modelování akustického přenosu skrz perforovanou překážku (cs)
skos:notation
  • RIV/49777513:23640/08:00500346!RIV09-MSM-23640___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(1M06031), P(GA101/07/1471)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 379946
http://linked.open...ai/riv/idVysledku
  • RIV/49777513:23640/08:00500346
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • two-scale homogenization; acoustic transmission; perforated periodic structure (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [3F8D71445A91]
http://linked.open...v/mistoKonaniAkce
  • Svratka
http://linked.open...i/riv/mistoVydani
  • Prague
http://linked.open...i/riv/nazevZdroje
  • Engineering Mechanics 2008
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Lukeš, Vladimír
  • Rohan, Eduard
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • Ústav termomechaniky AV ČR
https://schema.org/isbn
  • 978-80-87012-11-6
http://localhost/t...ganizacniJednotka
  • 23640
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