Large band gaps in two-dimensional phononic crystals with self-similarity structure
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Large band gaps in two-dimensional phononic crystals with self-similarity structure
- 发表刊物：
- International Journal of Modern Physics B
- 摘要：
- In this paper, we study the band gaps (BGs) of two-dimensional (2D) phononic crystals
(PCs) composed of self-similarity shape inclusions embedded in the homogenous
matrix. The dispersion relations, transmission spectra, and displacement fields of eigenmodes
of the proposed structures are calculated by use of finite element method. Due
to the simultaneous mechanisms of the Bragg scattering, the structure can exhibit lowfrequency
BGs, which can be effectively shifted by changing the geometries and degree
of the self-similarity structure. The BGs are significantly dependent upon the geometrical
parameters and degree of the self-similarity structure. It is concluded that, the PCs
with self-similarity structure, can modulate the location and width of BGs. But it must
be pointed out, the shape of self-similarity inclusion exercises a great influence on the
BGs. The study in this paper is relevant to the design of tuning BGs and isolators in
the low-frequency range.
- 合写作者：
- Nansha Gao, Jiu Hui Wu
- 卷号：
- Vol.29
- 页面范围：
- 1550017
- 是否译文：
- 否
- 发表时间：
- 2014-09-29