Dynamic homogenization in the Nonlocal and Local regimes for a phononic superlattice: Resonant elastic metamaterial
| Autor: | Selene Hernández-Rodríguez, J.I. Rodríguez Mora, J. Flores Méndez, M. Salazar Villanueva |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Condensed matter physics Superlattice 010102 general mathematics General Physics and Astronomy Metamaterial Physics::Optics 01 natural sciences Homogenization (chemistry) lcsh:QC1-999 Shear modulus Transverse plane Condensed Matter::Materials Science Effective mass (solid-state physics) Dispersion relation 0103 physical sciences 0101 mathematics 010306 general physics Passband lcsh:Physics |
| Zdroj: | Results in Physics, Vol 7, Iss, Pp 1376-1378 (2017) |
| ISSN: | 2211-3797 |
| Popis: | In this paper, we shall propose an elastic metamaterial based on a specific rubber/aluminum superlattice. We will calculate the frequency-dependent effective mass density and transverse elastic constant in the Local and Nonlocal homogenization regimes. Using the effective dynamic parameters, the phononic dispersion calculations of the homogenized elastic crystal show a second pass band for transverse modes where the superlattice behaves as a double-negative elastic metamaterial having simultaneously negative effective mass density and shear modulus. Which is very useful for designing resonant elastic metamaterials. Keywords: Metamaterial, Phononic crystal, Homogenization theory, Effective parameters, Dispersion relation |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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