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 |
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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 |
卷 | 43 |
期 | 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