基于方阵的二维声波晶体带结构有限元分析

2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI:10.1109/SPAWDA.2011.6167302

Bin Wu, Zong-fa Liu, C. He

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引用次数: 0

摘要

声波晶体是由嵌入在基体中的内含物的周期性分布构成的复合材料。由于周期性，这些材料可能表现出完全的声波带隙，其中声音和振动被禁止。本文采用COMSOL®有限元法研究了嵌入空气中的二维方形阵列空心圆柱体和喷环空心圆柱体的带隙特性，并用平面波展开法进行了验证。结果非常一致，证明COMSOL®可以用于结构的全面表征。

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Band structures of 2-D sonic crystals with square lattices based finite element method

Sonic crystals are composite materials made of periodic distributions of inclusions embedded in a matrix. Due to the periodicity, these materials may exhibit complete acoustic band gaps within which sound and vibrations are forbidden. In this paper, the band gap characteristics of a 2-D square array of hollow cylinders and spit-ring hollow cylinders embedded in air are investigated by COMSOL® finite element method, and then verified by plane wave expansion method. The results are very consistent, proving that COMSOL® can be employed for the full characterization of the structures.

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2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)

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