论文期刊

Effective parameters in beam acoustic metamaterials based on energy band structures




作者: Li Jing, Jiu Hui Wu, Dong Guan, Mingming Hou, Kuan Lu and Li Shen
发表/完成日期: 2016-08-01
期刊名称: Modern Physics Letters B
期卷: Vol. 30, No. 18
相关文章: Effective parameters in beam acoustic metamaterials based on energy band structures.pdf   
论文简介
We present a method to calculate the e ective material parameters of beam acoustic
metamaterials. The e ective material parameters of a periodic beam are calculated as
an example. The dispersion relations and energy band structures of this beam are cal-
culated. Subsequently, the e ective material parameters of the beam are investigated by
using the energy band structures. Then, the modal analysis and transmission properties
of the beams with nite cells are simulated in order to con rm the correctness of e ec-
tive approximation. The results show that the periodic beam can be equivalent to the
homogeneous beam with dynamic e ective material parameters in passband.