Shape optimization for homogenized phononic materials and band gap structures

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F15%3A43926422" target="_blank" >RIV/49777513:23520/15:43926422 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Shape optimization for homogenized phononic materials and band gap structures
Original language description
The paper deals with optimal design of the phononic material made as a composite constituted by soft elastic inclusions periodically distributed in the matrix which is made of another elastic material. Wave propagation in phononic materials is well approximated by a model obtained using the asymptotic homogenization method. Due to the large contrasts in elasticity of both the components, the inertia of such a homogenized medium is represented by a frequency-dependent mass tensor which can be negative for whole frequency intervals called band gaps, thereby the wave propagation is restricted to some polarizations or suppressed at all. By designing the shape of the "soft" inclusions in the microstructure the band gaps can be extended. In the paper we report the optimal phononic material design problem and introduce numerical examples.
Czech name
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Czech description
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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)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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