Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8161725 | Physica B: Condensed Matter | 2016 | 6 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Li Jing, Jiu Hui Wu, Dong Guan, Kuan Lu, Nansha Gao, Cao Songhua,