4.7 Article

Design of novel two-dimensional single-phase chiral phononic crystal assembly structures and study of bandgap mechanism

期刊

RESULTS IN PHYSICS
卷 48, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.rinp.2023.106431

关键词

Multi -ligament chiral structure; Wave propagation; Combined structure; Practicality; Vibration damping

向作者/读者索取更多资源

In this paper, novel two-dimensional single-phase three-ligament, four-ligament and six-ligament chiral structure models are proposed, which are easy to manufacture with few components and have good sound insulation and vibration damping performance. The dispersion information of the structure is calculated using Bloch's theorem and the finite element method. The optimized structure exhibits significantly lower bandgap and wider bandgap width, allowing for multi-frequency and broadband vibration attenuation.
In this paper, novel two-dimensional single-phase three-ligament, four-ligament and six-ligament chiral structure models are proposed. The advantage is that it is easy to manufacture with few components, has good sound insulation and vibration damping performance, and is more practical. The dispersion information of the structure is calculated by combining Bloch's theorem and the finite element method. By varying the geometric parameters of the new structural single-cell and simulating the vibration transmission of the finite period structure to check the vibration suppression capability of the optimized structure. Three combined structures were constructed to compare their energy band properties with the base structure. The wave propagation characteristics within the combined structure are also analyzed by comprehensive means. It is shown that the optimized structure has a significantly lower bandgap down to below 1 kHz and a significantly wider bandgap width up to 3.6 kHz. The combined structure can open up a wider omnidirectional bandgap for multi-frequency and broadband vibration attenuation. The flexibility of the structure combination gives it a large potential for use, providing a new so-lution for broadband and multi-frequency vibration and noise reduction, while plane wave analysis provides theoretical support for structural optimization.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据