scholarly journals Broadband low frequency sound absorption using a monostable acoustic metamaterial

2020 ◽  
Vol 147 (2) ◽  
pp. EL113-EL118 ◽  
Author(s):  
Xianhui Li ◽  
Tuo Xing ◽  
Junjuan Zhao ◽  
Xiaoling Gai
Keyword(s):  
Sound Absorption ◽  
Low Frequency ◽  
Acoustic Metamaterial ◽  
Frequency Sound

scholarly journals Hybrid acoustic metamaterial as super absorber for broadband low-frequency sound

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Yufan Tang ◽  
Shuwei Ren ◽  
Han Meng ◽  
Fengxian Xin ◽  
Lixi Huang ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Absorption Coefficient ◽  
Sound Absorption ◽  
Low Frequency ◽  
Functional Materials ◽  
Theoretical Method ◽  
Acoustic Metamaterials ◽  
Mechanical Stiffness ◽  
Acoustic Metamaterial ◽  
Frequency Sound

Abstract A hybrid acoustic metamaterial is proposed as a new class of sound absorber, which exhibits superior broadband low-frequency sound absorption as well as excellent mechanical stiffness/strength. Based on the honeycomb-corrugation hybrid core (H-C hybrid core), we introduce perforations on both top facesheet and corrugation, forming perforated honeycomb-corrugation hybrid (PHCH) to gain super broadband low-frequency sound absorption. Applying the theory of micro-perforated panel (MPP), we establish a theoretical method to calculate the sound absorption coefficient of this new kind of metamaterial. Perfect sound absorption is found at just a few hundreds hertz with two-octave 0.5 absorption bandwidth. To verify this model, a finite element model is developed to calculate the absorption coefficient and analyze the viscous-thermal energy dissipation. It is found that viscous energy dissipation at perforation regions dominates the total energy consumed. This new kind of acoustic metamaterials show promising engineering applications, which can serve as multiple functional materials with extraordinary low-frequency sound absorption, excellent stiffness/strength and impact energy absorption.

Deep subwavelength acoustic metamaterial for low-frequency sound absorption

2017 ◽  
Vol 118 (4) ◽  
pp. 44002 ◽  
Author(s):  
Yufan Tang ◽  
Fengxian Xin ◽  
Lixi Huang ◽  
Tianjian Lu
Keyword(s):  
Sound Absorption ◽  
Low Frequency ◽  
Acoustic Metamaterial ◽  
Frequency Sound

scholarly journals Micro-perforated acoustic metamaterial with honeycomb-corrugation hybrid core for broadband low frequency sound absorption

2018 ◽  
Vol 67 (23) ◽  
pp. 234302
Author(s):  
Zhang Feng-Hui ◽  
Tang Yu-Fan ◽  
Xin Feng-Xian ◽  
Lu Tian-Jian
Keyword(s):  
Sound Absorption ◽  
Low Frequency ◽  
Acoustic Metamaterial ◽  
Frequency Sound

scholarly journals Acoustic metamaterial for low frequency sound absorption in linear and nonlinear regimes

2020 ◽  
Vol 485 ◽  
pp. 115585
Author(s):  
Daniel C. Brooke ◽  
Olga Umnova ◽  
Philippe Leclaire ◽  
Thomas Dupont
Keyword(s):  
Sound Absorption ◽  
Low Frequency ◽  
Acoustic Metamaterial ◽  
Frequency Sound ◽  
Linear And Nonlinear ◽  
Nonlinear Regimes

LOW-FREQUENCY SOUND ABSORPTION WITH BANDWIDTH EXPANDED BY SYMMETRIC LABYRINTHINE ACOUSTIC METAMATERIAL

2021 ◽  
Author(s):  
Gildean Almeida ◽  
Erasmo Felipe Vergara ◽  
Leandro Barbosa ◽  
Robson Zdebski Mikulksi
Keyword(s):  
Sound Absorption ◽  
Low Frequency ◽  
Acoustic Metamaterial ◽  
Frequency Sound

A space-coiled acoustic metamaterial with tunable low-frequency sound absorption

2017 ◽  
Vol 120 (5) ◽  
pp. 54001 ◽  
Author(s):  
Yang Wang ◽  
Honggang Zhao ◽  
Haibin Yang ◽  
Jie Zhong ◽  
Jihong Wen
Keyword(s):  
Sound Absorption ◽  
Low Frequency ◽  
Acoustic Metamaterial ◽  
Frequency Sound
Sign in / Sign up

Export Citation Format

Share Document