Elastic wave propagation of two-dimensional metamaterials composed of auxetic star-shaped honeycomb structures

Shu Yeh Chang, Chung De Chen, Jia Yi Yeh, Lien Wen Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper, the wave propagation in phononic crystal composed of auxetic star-shaped honeycomb matrix with negative Poisson’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.

Original languageEnglish
Article number121
JournalCrystals
Volume9
Issue number3
DOIs
Publication statusPublished - 2019 Mar

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

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