Two scale modeling of acoustic waves in phononic plates using homogenization of high-contrast media
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F12%3A43915768" target="_blank" >RIV/49777513:23520/12:43915768 - isvavai.cz</a>
Alternative codes found
RIV/49777513:23640/12:43915768
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Two scale modeling of acoustic waves in phononic plates using homogenization of high-contrast media
Original language description
The paper deals with modeling wave dispersion in periodically heterogeneous plates characterized by high contrasts in elastic coefficients. We study two plate models based on the Reissner-Mindlin (R-M) theory and on the Kirchhoff-Love (K-L) theory. Models of homogenized plates were obtained using the two-scale unfolding method with the high contrast ansatz respected by scaling the elasticity coefficients of compliant inclusions. Consequently, dispersion properties are retained in the limit when the scale of the microstructure tends to zero. For some wavelengths, ``mass density'' coefficients can be negative, so that intervals of frequencies exist for which there is no propagation of elastic waves, the so-called band-gaps. Dispersion analysis for guidedwaves is performed for both types of the plates; occurrence of band gaps for the R-M plates is confirmed using numerical examples, however, the homogenized K-L plate model does not admit band gaps.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the Eleventh International Conference on Computational Structures Technology
ISBN
978-1-905088-54-6
ISSN
1759-3433
e-ISSN
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Number of pages
19
Pages from-to
1-19
Publisher name
Neuveden
Place of publication
Dubrovník
Event location
Dubrovník
Event date
Sep 4, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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