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Statements

Subject Item
n2:RIV%2F49777513%3A23520%2F12%3A43915768%21RIV13-GA0-23520___
rdf:type
n6:Vysledek skos:Concept
dcterms: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 guided waves 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. 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 guided waves 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.
dcterms:title
Two scale modeling of acoustic waves in phononic plates using homogenization of high-contrast media Two scale modeling of acoustic waves in phononic plates using homogenization of high-contrast media
skos:prefLabel
Two scale modeling of acoustic waves in phononic plates using homogenization of high-contrast media Two scale modeling of acoustic waves in phononic plates using homogenization of high-contrast media
skos:notation
RIV/49777513:23520/12:43915768!RIV13-GA0-23520___
n6:predkladatel
n7:orjk%3A23520
n4:aktivita
n17:P
n4:aktivity
P(ED1.1.00/02.0090), P(GAP101/12/2315)
n4:dodaniDat
n9:2013
n4:domaciTvurceVysledku
n5:1351958
n4:druhVysledku
n21:D
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n8:predkladatel
n4:idSjednocenehoVysledku
175481
n4:idVysledku
RIV/49777513:23520/12:43915768
n4:jazykVysledku
n18:eng
n4:klicovaSlova
phononic materials, plate models, homogenization, band gaps, wave dispersion
n4:klicoveSlovo
n10:plate%20models n10:wave%20dispersion n10:band%20gaps n10:phononic%20materials n10:homogenization
n4:kontrolniKodProRIV
[22B350D6D7E7]
n4:mistoKonaniAkce
Dubrovník
n4:mistoVydani
Dubrovník
n4:nazevZdroje
Proceedings of the Eleventh International Conference on Computational Structures Technology
n4:obor
n22:BI
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
3
n4:projekt
n16:ED1.1.00%2F02.0090 n16:GAP101%2F12%2F2315
n4:rokUplatneniVysledku
n9:2012
n4:tvurceVysledku
Miara, Bernadette Rohan, Eduard Cimrman, Robert
n4:typAkce
n15:WRD
n4:zahajeniAkce
2012-09-04+02:00
s:issn
1759-3433
s:numberOfPages
19
n19:hasPublisher
Neuveden
n3:isbn
978-1-905088-54-6
n20:organizacniJednotka
23520