Research on bandgaps in two-dimensional phononic crystal with two resonators
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Research on bandgaps in two-dimensional phononic crystal with two resonators
- 发表刊物：
- Ultrasonics
- 摘要：
- In this paper, the bandgap properties of a two-dimensional phononic crystal with the two resonators is studied and embedded in a homogenous matrix. The resonators are not connected with the matrix but linked with connectors directly. The dispersion relationship, transmission spectra, and displacement fields of the eigenmodes of this phononic crystal are studied with finite-element method. In contrast to the phononic crystals with one resonators and hollow structure, the proposed structures with two resonators can open bandgaps at lower frequencies. This is a very interesting and useful phenomenon. Results show that, the opening of the bandgaps is because of the local resonance and the scattering interaction between two resonators and matrix.
An equivalent spring-pendulum model can be developed in order to evaluate the frequencies of the bandgap edge. The study in this paper is beneficial to the design of opening and tuning bandgaps in phononic crystals and isolators in low-frequency range.
- 合写作者：
- Nansha Gao, Jiu Hui Wu, L. Yu
- 卷号：
- Vol.56
- 页面范围：
- 287–293
- 是否译文：
- 否
- 发表时间：
- 2014-09-09