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Partial microperforated panel and its acoustic siphon effect

机译：局部微型微孔面板及其声学虹吸效应

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摘要

Partial microperforated panel (MPP) structures have been proposed for MPP with low sound absorption properties. Its purpose is to improve the sound absorption performance of the MPP in certain frequency bands. The structure was studied by the transfer matrix method, finite element simulation and experimental test. The results show that the three kinds of curves, that is, theoretical and simulation and experimental curves, are in good agreement. In the parallel structure of partial MPP and the cavity, the MPP structure occupying three-quarters of the total area makes perfect sound absorption at 1076 Hz. The sound absorption peak of the MPP structure which occupies half of the total area is 0.89 at 980 Hz. The theory of calculating the partial MPP, which is accurate for fast prediction of sound absorption peaks, is proposed. The sound absorption performance of the multi-partial MPP structure has also been theoretically verified. The acoustic siphon phenomenon of partial MPP is discussed. On this basis, a multi-Helmholtz resonance structure is designed to achieve high sound absorption effect. The sound absorption coefficient is greater than 0.87 at 488-712 Hz. (C) 2020 Published by Elsevier Ltd.
机译：已经提出了局部微型微孔面板（MPP）结构，用于MPP，具有低音吸收性能。其目的是提高某些频段中MPP的吸音性能。通过转移矩阵法，有限元模拟和实验测试研究了该结构。结果表明，三种曲线，即理论和仿真和实验曲线，都很吻合。在部分MPP和腔的平行结构中，占据总面积的三分之三的MPP结构在1076Hz处具有完美的吸声。占据总面积一半的MPP结构的吸音峰值为980 Hz。提出了计算部分MPP的理论，这是准确的用于快速预测吸声峰值。多部分MPP结构的吸音性能也经过理论上验证。讨论了部分MPP的声学SIPHON现象。在此基础上，设计了一种多亥姆霍兹共振结构，以实现高音吸收效果。吸声系数大于0.87，在488-712 Hz。 （c）2020由elestvier有限公司发布

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  • 来源
    《Applied Acoustics》 |2020年第10期|107355.1-107355.7|共7页
  • 作者

    Xing Tuo; Gai Xiao-Ling; Li Xian-Hui; Cai Ze-Nong; Wang Fang; Guan Xi-Wen; Jiang Cong-Shuang;

  • 作者单位

    Beijing Municipal Inst Labor Protect Beijing Key Lab Environm Noise & Vibrat Beijing 100054 Peoples R China;

    Beijing Municipal Inst Labor Protect Beijing Key Lab Environm Noise & Vibrat Beijing 100054 Peoples R China;

    Beijing Municipal Inst Labor Protect Beijing Key Lab Environm Noise & Vibrat Beijing 100054 Peoples R China;

    Beijing Municipal Inst Labor Protect Beijing Key Lab Environm Noise & Vibrat Beijing 100054 Peoples R China;

    Beijing Municipal Inst Labor Protect Beijing Key Lab Environm Noise & Vibrat Beijing 100054 Peoples R China;

    Beijing Municipal Inst Labor Protect Beijing Key Lab Environm Noise & Vibrat Beijing 100054 Peoples R China;

    Beijing Municipal Inst Labor Protect Beijing Key Lab Environm Noise & Vibrat Beijing 100054 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microperforated panel; Absorption coefficient; Composite structure; Acoustic siphon effect; Multi-Helmholtz resonance;

    机译：微型电池板;吸收系数;复合结构;声学虹吸效应;多亥姆霍兹共振;

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