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- Title
Wave propagation in cellular locally resonant metamaterials.
- Authors
Comi, Claudia; Driemeier, Larissa
- Abstract
Locally resonant acoustic metamaterials have recently attracted a great interest due to their dynamic behaviour, characterized by a band gap at relatively low frequencies. This paper provides a numerical study, by means of finite element modal analyses, of the dynamic properties of 1D mass-inmass and 2D cellular locally resonant metamaterials. The 2D metamaterial is constituted by a cellular metallic lattice, filled by a soft light material with heavy inclusions or resonators. The influence of material parameters and cell geometry on the band gap width and frequency level are explored. In addition to the usual square lattice we also consider a hexagonal one, which proves to be more efficient for wave filtering.
- Subjects
METAMATERIALS; CLOAKING devices; ACOUSTIC devices; BAND gaps; ENERGY-band theory of solids
- Publication
Latin American Journal of Solids & Structures, 2018, Vol 15, Issue 4, p1
- ISSN
1679-7817
- Publication type
Article
- DOI
10.1590/1679-78254327