基于声振耦合的曲面微穿孔板吸声特性研究及实验分析

张永锋,李国防,王刚,倪俊芳,孔德瑜,盛哲昊

振动与冲击 ›› 2022, Vol. 41 ›› Issue (20) : 298-206.

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PDF(2753 KB)
振动与冲击 ›› 2022, Vol. 41 ›› Issue (20) : 298-206.
论文

基于声振耦合的曲面微穿孔板吸声特性研究及实验分析

  • 张永锋,李国防,王刚,倪俊芳,孔德瑜,盛哲昊
作者信息 +

Research and experimental analysis of sound absorption characteristics of acurved micro-perforated panel based on coupled vibro-acoustic

  • ZHANG Yongfeng, LI Guofang, WANG Gang, NI Junfang, KONG Deyu, SHENG Zhehao
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摘要

采用了声电类比法分析曲面微穿孔板的吸声特性,并根据瑞丽积分法求解了曲面板的自由振动特性,借助声振耦合原理获取了在考虑板的振动时微穿孔板的吸声特性,并给出了结构参数如穿孔率、孔径、板厚、曲率半径、背腔深度、板的长宽比等对曲面微穿孔板吸声系数的影响。根据理论模型,本文设计了阻抗管装置并测量了曲面微穿孔板的吸声系数,其中对不同穿孔率下的吸声系数进行了测量。结果显示:随着穿孔率和孔径的增大,由微孔引起的吸收峰值降低,吸声带宽变小;随着板厚的增加,由于板的共振引起的吸声峰向高频移动,由于微孔引起的吸声峰向低频移动,证明了理论模型的准确性。
关键词:曲面微穿孔板;板的振动;声电类比法;吸声系数;阻抗管法

Abstract

The acoustic-electrical analogy method is used to analyze the sound absorption characteristics of a curved micro-perforated panel (CMPP), and the free vibration characteristics of the curved panel are solved by the Rayleigh integral method. Based on the principle of coupled vibro- acoustic, the sound absorption characteristics of the micro-perforated panel considering panel vibration are obtained. The effects of structural parameters such as perforation rate, aperture, panel thickness, radius of curvature, depth of back cavity, and panel aspect ratio on the sound absorption coefficient of CMPP are analyzed. According to the theoretical model, the impedance tube device is designed to measure the sound absorption coefficients of CMPP, which are measured under different perforation rates and apertures. Results obtained show that as the perforation rate and aperture increase, the absorption peak caused by micropores decreases and the sound absorption bandwidth becomes narrower. With the increase of the panel thickness and the sound absorption peak caused by the resonance of the panel moves to high frequency, while the sound absorption peak caused by micropores moves to low frequency, which proves the accuracy of the theoretical model.
Key words: curved micro-perforated panel; free vibration characteristics; coupled vibro-acoustic; sound absorption coefficient; impedance tube

关键词

曲面微穿孔板 / 板的振动 / 声电类比法 / 吸声系数 / 阻抗管法

Key words

 curved micro-perforated panel / free vibration characteristics / coupled vibro-acoustic / sound absorption coefficient / impedance tube

引用本文

导出引用
张永锋,李国防,王刚,倪俊芳,孔德瑜,盛哲昊. 基于声振耦合的曲面微穿孔板吸声特性研究及实验分析[J]. 振动与冲击, 2022, 41(20): 298-206
ZHANG Yongfeng, LI Guofang, WANG Gang, NI Junfang, KONG Deyu, SHENG Zhehao. Research and experimental analysis of sound absorption characteristics of acurved micro-perforated panel based on coupled vibro-acoustic[J]. Journal of Vibration and Shock, 2022, 41(20): 298-206

参考文献

[1] Maa D Y. Theory and design of microperforated panel sound-absorbing constructions[J]. Scientia Sinica, 1975, 18(1): 55-71.
[2] 马大猷. 微穿孔板声阻抗的直接准确测量[J].声学学报, 1983, 8(5): 257-262.
Maa D Y. Direct and accurate measurements of acoustical impedance of the microperforated panel[J]. Acta Acoustics, 1983, 8(5):257-262.
[3] 马大猷. 微穿孔板结构的设计[J].声学学报, 1988(03): 16-22.
Maa D Y. Design of microperforated panel constructions[J]. Acta Acoustics, 1988(03):16-22.
[4] 马大猷. 微穿孔板吸声体的准确理论和设计[J].声学学报, 1997, 22(5): 385-393.
Maa D Y. General theory and design of microperforated-panel absorbers[J]. Acta Acoustics, 1997, 22(5):385-393.
[5] 马大猷,刘克. 微穿孔吸声体随机入射吸声性能[J].声学学报, 2000, 25(4): 289-296.
Maa D Y. Sound absorption characteristics of microperforated absorber for random incidence[J]. Acta Acoustics, 2000, 25(4):289-296.
[6] Y.Y. Lee, E.W.M. Lee, C.F. Ng. Sound absorption of a finite flexible micro-perforated panel backed by an air cavity[J]. Journal of Sound and Vibration,2004,287(1).
[7] 侯九霄,朱海潮,袁苏伟. 耦合条件下微穿孔板吸声特性研究[J].振动与冲击,2020,39(15):156-162.
Hou J X, Zhu H C, YUAN S W. Acoustic absorption characteristics of a flexible micro-perforated panel cavity with a flexible back one[J]. Journal of vibration and shock, 2020, 39(15):156-162.
[8] Bravo Teresa, Maury Cédric, Pinhède Cédric. Vibroacoustic properties of thin micro-perforated panel absorbers[J]. The Journal of the Acoustical Society of America,2012,132(2).
[9] Maa D Y. Micro perforated-panel wide band absorbers[J]. Noise Control Engineering Journal, 1987, 29(3): 77-84.
[10] Cedric Maury, Teresa Bravo, Cédric Pinhede. Sound absorption and transmission through flexible micro-perforated structures[J]. Proceedings of Meetings on Acoustics,2013,19(1).
[11] Jin G, Ye T, Wang X, et al. A unified solution for the vibration analysis of FGM doubly-curved shells of revolution with arbitrary boundary conditions[J]. Composites Part B: Engineering, 2016, 89: 230-252.
[12] Ventsel E, Krauthammer T, Carrera E. Thin Plates and Shells: Theory, Analysis, and Applications[J]. Applied Mechanics Reviews,2002,55(4).
[13] Szechenyi E. Approximate methods for the determination of the natural frequencies of stiffened and curved plates[J]. Academic Press,1971,14(3).
[14] Lee YY, Lee E W M. Widening the sound absorption bandwidths of flexible micro-perforated curved absorbers using structural and acoustic resonances[J]. International Journal of Mechanical Sciences, 2007, 49(8): 925-934.
[15] Szechenyi E. Approximate methods for the determination of the natural frequencies of stiffened and curved plates[J]. Academic Press, 1971, 14(3): 401-408.
[16] 马大猷. 微穿孔板吸声结构的理论和设计[J]. 中国科学,1975(01):38-50.

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