Elastic Wave Propagation of Two-Dimensional Metamaterials Composed of Auxetic Star-Shaped Honeycomb Structures
| Autor: | Jia Yi Yeh, Chung De Chen, Shu Yeh Chang, Lien Wen Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Auxetics Wave propagation General Chemical Engineering Physics::Optics wave propagation 02 engineering and technology 01 natural sciences Inorganic Chemistry Crystal Negative refraction Condensed Matter::Superconductivity 0103 physical sciences phononic crystal lcsh:QD901-999 General Materials Science Electronic band structure 010302 applied physics Condensed matter physics Metamaterial Honeycomb (geometry) 021001 nanoscience & nanotechnology Condensed Matter Physics star-shaped honeycomb structure Honeycomb structure lcsh:Crystallography 0210 nano-technology auxetic structure |
| Zdroj: | Crystals, Vol 9, Iss 3, p 121 (2019) Crystals Volume 9 Issue 3 |
| ISSN: | 2073-4352 |
| Popis: | In this paper, the wave propagation in phononic crystal composed of auxetic star-shaped honeycomb matrix with negative Poisson&rsquo s ratio is presented. Two types of inclusions with circular and rectangular cross sections are considered and the band structures of the phononic crystals are also obtained by the finite element method. The band structure of the phononic crystal is affected significantly by the auxeticity of the star-shaped honeycomb. Some other interesting findings are also presented, such as the negative refraction and the self-collimation. The present study demonstrates the potential applications of the star-shaped honeycomb in phononic crystals, such as vibration isolation and the elastic waveguide. |
| Databáze: | OpenAIRE |
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