共 33 条
A design method for accurate acoustic impedance matching under coherent coupling of sound-absorbing subunits
被引:3
作者:

Zhang, Xiaowei
论文数: 0 引用数: 0
h-index: 0
机构:
Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China
Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China

Ye, Yingrui
论文数: 0 引用数: 0
h-index: 0
机构:
Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China
Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China

Lu, Yuxin
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h-index: 0
机构:
Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China
Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China

Wang, Xiaopeng
论文数: 0 引用数: 0
h-index: 0
机构:
Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China
Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China
机构:
[1] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China
关键词:
ABSORPTION;
D O I:
10.1063/5.0148363
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
Acoustic metamaterials have garnered significant attention as an effective means to control low-frequency noise. However, the accurate design of complex structures composed of multiple subunits is still a challenge due to local coupling effects. To address this issue, in this work, a new design method is proposed that accurately achieves impedance matching at the target frequency when subunits are coupled in parallel. The method is demonstrated using six Fabry-Perot (F-P) tubes to achieve perfect sound absorption in the continuous band of 405-445 Hz and the discontinuous bands of 400-410 and 430-440 Hz. Theoretical results show an average absorption coefficient of 99.3% in the target frequency band, which is verified through an impedance tube experiment. In addition, this paper explores the stability of this method under complex design conditions and discusses the mechanism of the influence of subunit parameters on sound-absorption performance from the perspective of impedance matching. Overall, the proposed design method offers a promising approach to achieving broadband sound absorption using multiple coupled subunits. The results of this study provide valuable insights for future research and the design of acoustic metamaterials.
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页数:9
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