微尺度手性晶格中波传播研究

Pengcheng Zhao, Kai Zhang, Yunchan Fu, Zichen Deng

科研成果: 期刊稿件文章同行评审

摘要

To address the wave propagation problem in microscale chiral lattices, we studied the impact of the size effect on the wave propagation features. Based on the modified coupled stress theory, the equations of motion of the microscale Euler beam are established. Considering the size effect, the band structures of the microscale chiral lattices are calculated by applying the finite element method and the Bloch theorem. It is found that the lattice size has an important influence on the band structures and band gaps of microscale structures. The scale parameter introduced by the modified coupled stress theory increases the bending stiffness of the microscale Euler beam and the dispersion curve frequency. Additionally, the size effect on the directional features of the wave propagation is investigated by comparing the results in the isofrequency surfaces of the dispersion surfaces obtained by the present method and the classical theory.

投稿的翻译标题Study on the wave propagation in a microscale chiral lattice
源语言繁体中文
页(从-至)1314-1319
页数6
期刊Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University
43
9
DOI
出版状态已出版 - 9月 2022

关键词

  • band gap
  • band structure
  • Bloch theorem
  • finite element method
  • isofrequency surface
  • microscale chiral lattice
  • modified coupled stress theory
  • wave propagation

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