Optimization of perforated plates in interaction with acoustic waves

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F18%3A43953247" target="_blank" >RIV/49777513:23520/18:43953247 - isvavai.cz</a>

Výsledek na webu

<a href="http://past.isma-isaac.be/isma2018/proceedings/program/" target="_blank" >http://past.isma-isaac.be/isma2018/proceedings/program/</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Optimization of perforated plates in interaction with acoustic waves

Popis výsledku v původním jazyce

The paper deals with optimization of a perforated plate which interacts with acoustic waves propagating in an inviscid compressible fluid. In general, the aim is to influence the acoustic signal conducted through a waveguide in which the perforated plate is fitted. Nonlocal transmission conditions have been derived by homogenization of a problem describing vibroacoustic fluid-structure interactions in a fictitious layer in which the plate is embedded. The Reissner-Mindlin theory of plates is adopted for periodic perforations designed by arbitrary cylindrical holes For rigid plates, quite general types of perforations can be considered for which homogenized transmission coefficients reveal coupling of the transverse and tangential waves. For both the rigid and the deformable plates, the homogenized model of the vibroacoustic transmission has been derived using the two-scale asymptotic analysis. The design of the holes perforating the plate is parameterized by the B-spline representation of the reference periodic cell generating the transmission layer.

Název v anglickém jazyce

Optimization of perforated plates in interaction with acoustic waves

Popis výsledku anglicky

The paper deals with optimization of a perforated plate which interacts with acoustic waves propagating in an inviscid compressible fluid. In general, the aim is to influence the acoustic signal conducted through a waveguide in which the perforated plate is fitted. Nonlocal transmission conditions have been derived by homogenization of a problem describing vibroacoustic fluid-structure interactions in a fictitious layer in which the plate is embedded. The Reissner-Mindlin theory of plates is adopted for periodic perforations designed by arbitrary cylindrical holes For rigid plates, quite general types of perforations can be considered for which homogenized transmission coefficients reveal coupling of the transverse and tangential waves. For both the rigid and the deformable plates, the homogenized model of the vibroacoustic transmission has been derived using the two-scale asymptotic analysis. The design of the holes perforating the plate is parameterized by the B-spline representation of the reference periodic cell generating the transmission layer.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of ISMA2018 - International Conference on Noise and Vibration Engineering

ISBN

978-90-73802-99-5

ISSN

—

e-ISSN

neuvedeno

Počet stran výsledku

12

Strana od-do

4585-4596

Název nakladatele

KU Leuven

Místo vydání

Leuven

Místo konání akce

Leuven

Datum konání akce

17. 9. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—