有限大背腔单层微穿孔板吸声体吸声特性研究

南京大学学报(自然科学版) ›› 2017, Vol. 53 ›› Issue (4): 681–.

有限大背腔单层微穿孔板吸声体吸声特性研究

郭文成1，2，闵鹤群1，2*

出版日期:2017-08-02 发布日期:2017-08-02
作者简介: 1.东南大学建筑学院，南京，210096；2.东南大学城市与建筑遗产保护教育部重点实验室，南京，201096
基金资助:
基金项目：国家自然科学基金(51408113)，江苏省科技计划青年基金(BK20140623)
收稿日期：2016－10－01
*通讯联系人，E－mail：hqmin@seu.edu.cn

Investigation on the absorption characteristics of single－layer micro－perforated panel absorber with finite－sized cavity

Guo Wencheng1，2，Min Hequn1，2*

Online:2017-08-02 Published:2017-08-02
About author: 1.School of Architecture，Southeast University，Nanjing，210096，China；
2．Key Laboratory of Urban and Architectural Heritage Conservation of Ministry of Education，Southeast University，Nanjing，210096，China

摘要/Abstract

摘要： 基于声有限元数值方法研究了有限大背腔单层微穿孔板吸声体的吸声特性．首先，建立了该类单层微穿孔板吸声体的有限元数值模型，并采用等效电路法对其准确性进行了验证．然后，基于已验证的仿真模型讨论了有限大背腔单层微穿孔板吸声体的斜入射吸声性能，以及背腔宽深比对其扩散场吸声系数的影响规律．结果显示，在正入射条件下，单层微穿孔板吸声体的吸声性能主要受到有限大背腔非切向模态的影响，而在斜入射条件下，主要受到切向模态的影响；不同入射角度的声波会激发有限大背腔不同的切向模态，从而改善单层微穿孔板吸声体的高频吸声性能；调整背腔宽深比能有效控制单层微穿孔板吸声体扩散场吸声系数曲线高频吸声峰的位置，并且存在最佳宽深比使其同时具有较高的吸声系数和较宽的吸声频带．本文可为噪声控制工程和室内声学设计提供有用的参考．

Abstract: In this paper，the absorption characteristics of a single－layer micro－perforated panel(MPP)absorber with finite－sized cavity are investigated according to the finite element method.Firstly，the numerical model of this kind of single－layer MPP absorber is established，and the accuracy of it is validated through the equivalent circuit method.Secondly，based on the validated finite element model，the sound absorption characteristics of the single－layer MPP absorber are discussed under oblique incidence conditions，and the influences of width－depth ratios of the finite－sized cavity on the diffuse field sound absorption coefficients of the absorber are also investigated.The results show that for a normal incidence condition，the sound absorption performances of the single－layer MPP absorber are mainly influenced by the non－grazing modes of the finite－sized cavity，while for a grazing incidence condition，are mainly influenced by the grazing modes；in addition，the different grazing modes of the finite－sized cavity can be excited by the sound with different incidence angles，thus the absorption performance of the single－layer MPP absorber can be further enhanced；furthermore，the peak locations of the sound absorption coefficient of the single－layer MPP absorber at high frequencies can be effective controlled through tuning the width－depth ratio of the finite－sized cavity，and there is an optimum ratio that can makes the single－layer MPP absorber both have higher sound absorption coefficient and wider sound absorption bandwidth.This paper is supposed to provide some useful suggestions to noise engineering control and indoor acoustical design.

郭文成1，2，闵鹤群1，2*. 有限大背腔单层微穿孔板吸声体吸声特性研究[J]. 南京大学学报(自然科学版), 2017, 53(4): 681–.

Guo Wencheng1，2，Min Hequn1，2*. Investigation on the absorption characteristics of single－layer micro－perforated panel absorber with finite－sized cavity[J]. Journal of Nanjing University(Natural Sciences), 2017, 53(4): 681–.

参考文献

[1]　马大猷．微穿孔板吸声结构的理论和设计．中国科学，1975，18(1)：38－50.(Maa D Y．Theory and design of microperforated panel sound－absorbing constructions.Scientia Sinica，1975，18(1)：55－71.)
[2] 盛胜我，宋拥民，王季卿．微穿孔平板式空间吸声体的理论分析．声学学报，2004，29(4)：303－307.(Sheng S W，Song Y M，Wang J Q．Theoretical analysis of the acoustical characteristics of suspended micro－perforated panel.Acta Acustica，2004，29(4)：303－307.)
[3] 蔺　磊，王佐民，姜在秀．微穿孔共振吸声结构中吸声材料的作用．声学学报，2010，35(4)：385－392.(Lin L，Wang Z M，Jiang Z X．Effect of sound－absorbing material on a microperforated absorbing construction.Acta Acustica，2010，35(4)：385－392.)
[4] Park S H．Acoustic properties of micro－perforated panel absorbers backed by Helmholtz resonators for the improvement of low－frequency sound absorption.Journal of Sound and Vibration，2013，332(20)：4895－4911.
[5] 赵晓丹，张晓杰，姜　哲．三层微穿孔板的优化设计及特性分析．声学学报，2008，33(1)：84－87.(Zhao X D，Zhang X J，Jiang Z．Three layer microperforated panel optimal design and analysis of its characteristic.Acta Acustica，2008，33(1)：84－87.)
[6] Wang C Q，Huang L X．On the acoustic properties of parallel arrangement of multiple micro－perforated panel absorbers with different cavity depths.The Journal of the Acoustical Society of America，2011，130(1)：208－218.
[7] Guo W C，Min H Q．A compound micro－perforated panel sound absorber with partitioned cavities of different depths.Energy Procedia，2015，78：1617－1622.
[8] Qian Y J，Kong D Y，Liu S M，et al.Investigation on micro－perforated panel absorber with ultra－micro perforations.Applied Acoustics，2013，74：931－935.
[9] Liu J，Herrin D W．Enhancing micro－perforated panel attenuation by partitioning the adjoining cavity.Applied Acoustics，2010，71(2)：120－127.
[10] Yoo T，Bolton J S，Alexander J，et al.Absorption from finitesized microperforated panels at arbitrary incidence angles.In：Proceedings of the 15th International Congress on Sound and Vibration.Daejeon，Korea：ICSV，2008：2879－2886.　
[11] Londhe N R，Bolton J S，Yoo T，et al.Random incidence sound absorption of coefficient micro－perforated absorbers.In：Proceedings of INTER－NOISE and NOISE－CON Congress and Conference Proceedings.Reno，NV，USA：Institute of Noise Control Engineering，2007，2007(1)：1643－1653.
[12] Wang C Q，Cheng L，Pan J，et al.Sound absorption of a micro－perforated panel backed by an irregular－shaped cavity.The Journal of the Acoustical Society of America，2010，127(1)：238－246.
[13] Yang C，Cheng L，Pan J．Absorption of oblique incidence sound by a finite micro－perforated panel absorber.The Journal of the Acoustical Society of America，2013，133(1)：201－209.
[14] Berenger J P．A perfectly matched layer for the absorption of electromagnetic waves.Journal of Computational Physics，1994，114(2)：185－200.
[15] Maa D Y．Potential of microperforated panel absorber.The Journal of the Acoustical Society of America，1998，104(5)：2861－2866.
[16] Maa D Y．Microperforated－panel wideband absorbers.Noise Control Engineering Journal，1987，29(3)：77－84.

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