阻抗解耦的管束穿孔板吸声性能分析

Translated title of the contribution: Performance analysis of perforated panel with impedance-decoupling tube-bundles

Zhongjian Mei, Xiaodong Li*, Yadong Lyu*, Xiaobin Cheng, Jun Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

To solve the problem of coupling of acoustic resistance and acoustic reactance which affects impedance matching in acoustic absorbers, a perforated panel structure with segmented impedance-decoupling tube-bundles (PP-IDTB) is proposed to realize the decoupling of acoustic resistance and acoustic reactance. The decoupling of the acoustic resistance and acoustic reactance of the PP-IDTB can be achieved by adjusting the geometrical parameters of the upper fine tube bundles and the lower thick tube. Theoretical and simulated results show that by changing the diameter of the upper thin tubes, the acoustic resistance can be changed, while the acoustic reactance remains constant, thus the frequency width of the absorption can be adjusted. The acoustic reactance varies with the length of the lower thick tube, while the acoustic resistance remains almost unchanged, thus the peak frequency of absorption can be adjusted. Moreover, impedance decoupling can improve the impedance matching effect in a wide frequency range, further enhance the performance of sound absorption, and broaden the adjustment range of the absorption band. The effectiveness of impedance decoupling in modulating the absorption performance of PP-IDTB is experimentally verified.

Translated title of the contributionPerformance analysis of perforated panel with impedance-decoupling tube-bundles
Original languageChinese (Simplified)
Pages (from-to)246-256
Number of pages11
JournalShengxue Xuebao/Acta Acustica
Volume50
Issue number2
DOIs
Publication statusPublished - Mar 2025
Externally publishedYes

Bibliographical note

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ASJC Scopus Subject Areas

  • Acoustics and Ultrasonics

Keywords

  • Impedance decoupling
  • Impedance matching
  • Perforated panel with tube-bundles
  • Sound absorption performance

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