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Statements

Subject Item
n2:RIV%2F49777513%3A23520%2F09%3A00501582%21RIV10-MSM-23520___
rdf:type
n19:Vysledek skos:Concept
dcterms:description
We consider a composite medium made of weakly piezoelectric inclusionsperiodically distributed in the matrix which is made of a different piezoelectricmaterial. The medium is subject to a periodic excitation with an incidence wave frequency independent of scale of the microscopic heterogeneities. Two-scale method of homogenization was applied to obtain the limit homogenized model which describes acoustic wave propagation in the piezoelectric medium when the scale of the heterogeneities goes to zero. In analogy with the purely elastic composite, the resulting model is featured by existence of the acoustic band gaps. These are identified for certain frequency ranges whenever the so-called homogenized mass becomes negative. The homogenized model can be used for band gap prediction and for dispersion analysis for low wave numbers. Modeling of these types of composite materials seems to be perspective in the context of Smart Materials design. We consider a composite medium made of weakly piezoelectric inclusionsperiodically distributed in the matrix which is made of a different piezoelectricmaterial. The medium is subject to a periodic excitation with an incidence wave frequency independent of scale of the microscopic heterogeneities. Two-scale method of homogenization was applied to obtain the limit homogenized model which describes acoustic wave propagation in the piezoelectric medium when the scale of the heterogeneities goes to zero. In analogy with the purely elastic composite, the resulting model is featured by existence of the acoustic band gaps. These are identified for certain frequency ranges whenever the so-called homogenized mass becomes negative. The homogenized model can be used for band gap prediction and for dispersion analysis for low wave numbers. Modeling of these types of composite materials seems to be perspective in the context of Smart Materials design.
dcterms:title
Dispersion properties in homogenized piezoelectric phononic materials Dispersion properties in homogenized piezoelectric phononic materials
skos:prefLabel
Dispersion properties in homogenized piezoelectric phononic materials Dispersion properties in homogenized piezoelectric phononic materials
skos:notation
RIV/49777513:23520/09:00501582!RIV10-MSM-23520___
n3:aktivita
n15:Z n15:P
n3:aktivity
P(GA101/07/1471), Z(MSM4977751301)
n3:dodaniDat
n4:2010
n3:domaciTvurceVysledku
n9:4490673 n9:1351958
n3:druhVysledku
n6:D
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n22:predkladatel
n3:idSjednocenehoVysledku
310775
n3:idVysledku
RIV/49777513:23520/09:00501582
n3:jazykVysledku
n7:eng
n3:klicovaSlova
Dispersion; phononic materials; homogenization; acoustic waves
n3:klicoveSlovo
n5:phononic%20materials n5:Dispersion n5:homogenization n5:acoustic%20waves
n3:kontrolniKodProRIV
[F84CC9F870EF]
n3:mistoKonaniAkce
Svratka
n3:mistoVydani
Prague
n3:nazevZdroje
Engineering Mechanics 2009
n3:obor
n16:BI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n12:GA101%2F07%2F1471
n3:rokUplatneniVysledku
n4:2009
n3:tvurceVysledku
Cimrman, Robert Rohan, Eduard
n3:typAkce
n10:CST
n3:zahajeniAkce
2009-05-14+02:00
n3:zamer
n20:MSM4977751301
s:numberOfPages
12
n21:hasPublisher
Ústav teoretické a aplikované mechaniky AV ČR
n13:isbn
978-80-86246-35-2
n18:organizacniJednotka
23520