Broadband locally resonant band gaps in periodic beam structures with embedded acoustic black holes
Broadband locally resonant band gaps in periodic beam structures with embedded acoustic black holes
复制标题
嵌入声学黑洞的周期性梁结构中的宽带局部谐振带隙
DOI:
10.1063/1.4983459
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发表时间:
2017-05
影响因子:
3.2
通讯作者:
Cheng Li
中科院分区:
文献类型:
--
作者:
Tang Liling;Cheng Li
The Acoustic Black Hole (ABH) effect can be used to effectively reduce structural vibrations by trapping flexural waves in a thin-walled structure with a power-law thickness variation. In the present study, we used a wavelet-decomposed energy method to investigate an Euler-Bernoulli beam embedded with multiple ABHs. Broadband transmission attenuation bands at relatively low frequencies are observed in a beam containing only a few ABH elements. To explain the underlying phenomena, an infinite structure with periodic ABH elements is analyzed. Numerical results show that the periodic boundary conditions in terms of displacement and rotational slope of a unit cell, based on the finite model, are sufficient to describe the band structures, without requiring full treatment of the entire infinite structure. This provides an efficient and flexible means to predict, and eventually optimize, the band structure based on a single element. Meanwhile, the ABH-induced locally resonant band gaps coincide with the attenua...
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影响因子:
4.7
作者:
Tang Liling;Cheng Li
通讯作者:
Cheng Li
影响因子:
4.1
作者:
Bowyer, E. P.;Krylov, V. V.
通讯作者:
Krylov, V. V.
影响因子:
4.7
作者:
Georgiev, V. B.;Cuenca, J.;Krylov, V. V.
通讯作者:
Krylov, V. V.
DOI:
10.1063/1.4823127
发表时间:
1992-05
期刊:
Computers in Physics
影响因子:
--
作者:
I. Daubechies
通讯作者:
I. Daubechies
影响因子:
2.6
作者:
Yong Xiao;B. Mace;Jihong Wen;X. Wen
通讯作者:
Yong Xiao;B. Mace;Jihong Wen;X. Wen