Homogenization of the vibro-acoustic transmission on perforated reissner-mindlin plate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F11%3A43899229" target="_blank" >RIV/49777513:23520/11:43899229 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Homogenization of the vibro-acoustic transmission on perforated reissner-mindlin plate

Popis výsledku v původním jazyce

The paper deals with homogenization of the fluid-structure coupling in the vibro-acoustic problem. We consider a perforated plate of the Reissner-Mindlin (R-M) type surrounded by the acoustic fluid. As the main result, we present a homogenized model of the vibro-acoustic transmission which takes into account specific shapes of the holes in the plate. The model is derived by homogenizing a layer of thickness epsilon, which is determined by the mean-surface of the plate. The perforation is epsilon-periodic. For a given wave frequency, using the periodic unfolding method, we perform the asymptotic analysis epsilon ? 0 of the coupled system involving the Helmholtz equation and the R-M plate equations. The homogenized transmission equations involve coeficients which are calculated using solutions to microscopic problems defined in the reference cell representing the geometry. For validation of the approach, we present examples which demonstrate influence of the perforation design on the glo

Název v anglickém jazyce

Homogenization of the vibro-acoustic transmission on perforated reissner-mindlin plate

Popis výsledku anglicky

The paper deals with homogenization of the fluid-structure coupling in the vibro-acoustic problem. We consider a perforated plate of the Reissner-Mindlin (R-M) type surrounded by the acoustic fluid. As the main result, we present a homogenized model of the vibro-acoustic transmission which takes into account specific shapes of the holes in the plate. The model is derived by homogenizing a layer of thickness epsilon, which is determined by the mean-surface of the plate. The perforation is epsilon-periodic. For a given wave frequency, using the periodic unfolding method, we perform the asymptotic analysis epsilon ? 0 of the coupled system involving the Helmholtz equation and the R-M plate equations. The homogenized transmission equations involve coeficients which are calculated using solutions to microscopic problems defined in the reference cell representing the geometry. For validation of the approach, we present examples which demonstrate influence of the perforation design on the glo

Druh

O - Ostatní výsledky

CEP obor

BI - Akustika a kmity

OECD FORD obor

—

Projekt

<a href="/cs/project/GA101%2F07%2F1471" target="_blank" >GA101/07/1471: Modelování šíření vln v tělesech a heterogenních prostředí s uvažováním lineárních, nelinárních a víceškálových jevů metodou konečných prvků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů