Research on the band gaps of the two-dimensional Sierpinski fractal phononic crystals
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Research on the band gaps of the two-dimensional Sierpinski fractal phononic crystals
- 发表刊物：
- Modern Physics Letters B
- 摘要：
- In this paper, we study the band gaps (BGs) of the two-dimensional (2D) Sierpinski fractal
phononic crystals (SFPGs) embedded in the homogenous matrix. The BGs structure,
transmission spectra and displacement fields of eigenmodes of the proposed structures are calculated by using finite element method (FEM). Due to the simultaneous mechanisms of the Bragg scattering, the structure can exhibit low-frequency BGs, which can be effectively shifted by changing the inclusion rotation angle. The initial stress values can compress the BGs is proposed for the first time. Through the calculation, it is shown
that, in the 2D solid–solid SFPG, the multi-frequency BGs exist. The whole BGs would
incline to the low-frequency range with the increase of the fractal dimension. The SFPGs
with different shape inclusions, can modulate the number, width and location of 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, Li Jing
- 卷号：
- Vol. 29, No. 23, 2015
- 页面范围：
- 1550134
- 是否译文：
- 否
- 发表时间：
- 2015-06-12