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  • The paper deals with modeling the acoustic transmission through a perforated interface plane separating two halfspaces occupied by the acoustic medium. We considered the two-scale homogenization limit of the standard acoustic problem imposed in the layer with the perforated periodic structure embedded inside. The homogenized transmission conditions govern the interface discontinuity of the acoustic pressure associated with the two halfspaces and the magnitude of the fictitious transversal acoustic velocity. By numerical examples we illustrate this novel approach of modeling the acoustic impedance of perforated interfaces.
  • The paper deals with modeling the acoustic transmission through a perforated interface plane separating two halfspaces occupied by the acoustic medium. We considered the two-scale homogenization limit of the standard acoustic problem imposed in the layer with the perforated periodic structure embedded inside. The homogenized transmission conditions govern the interface discontinuity of the acoustic pressure associated with the two halfspaces and the magnitude of the fictitious transversal acoustic velocity. By numerical examples we illustrate this novel approach of modeling the acoustic impedance of perforated interfaces. (en)
  • Tento článěk se zabývá matematickým modelováním akustického přenosu skrz perforovanou překážku oddělující dvě polooblasti vyplněné akustickým médiem. K popisu akustických dějů na překážce, perforované periodické struktuře, je použita limitní dvouškálová metoda homogenizace. Homogenizovaná přenosová podmínka řídí tlakovou nespojitost na rozhraní a určuje velikost příčné akustické rychlosti. Numerické příklady ilustrují použití metody homogenizace k určení akustické impedance perforované překážky. (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/49777513:23640/07:00000009!RIV08-MSM-23640___
http://linked.open.../vavai/riv/strany
  • 137
http://linked.open...avai/riv/aktivita
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  • P(1M06031), P(GA101/07/1471)
http://linked.open...iv/cisloPeriodika
  • 0
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  • 434389
http://linked.open...ai/riv/idVysledku
  • RIV/49777513:23640/07:00000009
http://linked.open...riv/jazykVysledku
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  • acoustic transmission; perforated layer; homogenization technique (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CZ - Česká republika
http://linked.open...ontrolniKodProRIV
  • [C6FB20498F8D]
http://linked.open...i/riv/nazevZdroje
  • Applied and Computational Mechanics
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http://linked.open...vavai/riv/projekt
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http://linked.open...iv/tvurceVysledku
  • Lukeš, Vladimír
  • Rohan, Eduard
issn
  • 1802-680X
number of pages
http://localhost/t...ganizacniJednotka
  • 23640
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