Dual-band perfect low-frequency acoustic absorption based on metaporous composite

被引：5
|
作者：
Zhou, Yukun [1 ,2 ]
Zhang, Xueyong [1 ,2 ]
Wang, Ying [1 ,2 ]
Feng, Yan [2 ]
机构：
[1] Anhui Jianzhu Univ, Sch Math & Phys, Inst Acoust, Hefei 230601, Peoples R China
[2] Anhui High Educ Inst, Key Lab Architectural Acoust Environm, Hefei 230601, Anhui, Peoples R China
来源：
APPLIED PHYSICS EXPRESS | 2021年 / 14卷 / 09期
关键词：
SOUND-ABSORPTION;
D O I：
10.35848/1882-0786/ac1980
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present a low-frequency dual-band (303 and 356 Hz) perfect acoustic absorption (PA) metaporous. The metaporous composite is constructed by introducing Helmholtz resonance and Fabry-Perot resonance in porous materials. Our simulations show that the dual-band metaporous absorber has an ultra-thin thickness (lambda/18 for 356 Hz). Using the coupling of the three dual-band PA absorbers, the low-frequency high-efficiency (>90%) broadband acoustic absorption is obtained in the frequency range of 332-562 Hz. Experiments confirm the dual-band perfect acoustic absorption and high-efficiency broadband acoustic absorption. The metaporous composite could have promising potential for low-frequency noise reduction.
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收藏
页数：4
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