Asymmetric acoustic transmission in graded beam

Li Jing, Jiu Hui Wu, Dong Guan, Kuan Lu, Nansha Gao, Cao Songhua

科研成果: 期刊稿件文章同行评审

6 引用 (Scopus)

摘要

We demonstrate the dynamic effective material parameters and vibration performance of a graded beam. The structure of the beam was composed of several unit cells with different fill factors. The dispersion relations and energy band structures of each unit cell were calculated using the finite element method (FEM). The dynamic effective material parameters in each unit cell of the graded beam were determined by the dispersion relations and energy band structures. Longitudinal wave propagation was investigated using a numerical method and FEM. The results show that the graded beam allows asymmetric acoustic transmission over a wide range of frequencies.

源语言英语
页(从-至)140-145
页数6
期刊Physica B: Condensed Matter
502
DOI
出版状态已出版 - 1 12月 2016

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