[1]吴飞,陈文渊,巨泽港,等.基于组合微穿孔板的低频宽带吸声超材料研究[J].中国材料进展,2021,40(01):029-33.[doi:10.7502/j.issn.1674-3962.202007018]
　WU Fei,CHEN Wenyuan,JU Zegang,et al.Research on Low Frequency Broadband Sound Absorption Metamaterial Based on Combined Micro-Perforated Plate[J].MATERIALS CHINA,2021,40(01):029-33.[doi:10.7502/j.issn.1674-3962.202007018]
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基于组合微穿孔板的低频宽带吸声超材料研究()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
40
期数:
2021年第01期
页码:
029-33
栏目:
出版日期:
2021-01-30

文章信息/Info

Title:
Research on Low Frequency Broadband Sound Absorption Metamaterial Based on Combined Micro-Perforated Plate
文章编号:
1674-3962(2021)01-0029-05
作者:
吴飞1; 2; 陈文渊3; 巨泽港3; 古棋元3; 肖勇2; 郁殿龙2; 温激鸿2
（1. 重庆大学汽车工程学院，重庆 400715）（2. 国防科技大学智能科技学院，湖南 长沙 410073）（3. 西南大学工程技术学院，重庆 400715）
Author(s):
WU Fei1; 2;  CHEN Wenyuan3;  JU Zegang3;  GU Qiyuan3;  XIAO Yong2;  YU Dianlong2;  WEN Jihong2
(1. School of Automotive Engineering, Chongqing University, Chongqing 400715, China) （2. College of Intelligence Science, National University of Defense Technology, Changsha 410073, China) (3. College of Engineering and Technology, Southwest University, Chongqing 400715, China)
关键词:
声学超材料; 低频宽带; 微穿孔板; 双吸收峰
Keywords:
acoustic metamaterial;  low frequency broadband;  microperforated plate;  double absorption peaks
分类号:
TU311.3;TB34
DOI:
10.7502/j.issn.1674-3962.202007018
文献标志码:
A
摘要:
如何实现低频宽带吸声，一直是噪声控制工程领域亟待解决的问题之一，近年来声学超材料的迅速发展为此提供了新的解决思路。将拓宽单个峰值吸声带宽与引入第二阶吸收峰两种方式有效结合，基于组合微穿孔板提出了一种低频宽带吸声超材料，建立了组合微穿孔板吸声结构的吸声理论模型与数值仿真模型，分析了其低频宽带吸声机理。理论计算结果与数值计算结果吻合良好，验证了组合微穿孔板吸声结构的准确性。该吸声结构在低频范围产生双吸收峰，峰值都接近准完美吸声，同时具有两个较宽的吸声带宽，结构厚度满足亚波长尺度，展现出了良好的低频宽带吸声特性。最后，通过严格的参数设计，仅耦合两个吸声单元后在250~900 Hz范围内得到了一个连续的吸声频带，平均吸声系数达到0.86，此时结构最大厚度为70 mm。该吸声结构具有优异的低频宽带吸声特性以及丰富的可调性等特点，在噪声控制工程领域具有一定的应用前景。
Abstract:
How to achieve low frequency broadband sound absorption has always been one of the urgent problems in the field of noise control engineering. The rapid development of acoustic metamaterials in recent years has provided new solutions for this. In this paper, widening the single peak absorption bandwidth and introducing the second-order absorption peak was effectively combined to obtain a low frequency broadband sound absorption metamaterial based on the combined micro-perforated plate. Then both the theoretical and numerical simulation models of the structure of combined micro-perforated plate were established. The theoretical results agreed well with the numerical calculation results, which verified the accuracy of the proposed structure. The sound absorption structure can produce double absorption peaks in the low frequency range, and the value of the absorption peak was close to quasi-perfect sound absorption. At the same time, it had two wider absorption bandwidths, and the structure thickness fell in the range of subwavelength scale, exhibiting good low frequency broadband sound absorption property. Finally, through strict parameter design, a continuous sound absorption band was obtained in the range of 250~900 Hz by coupling only two sound absorption units. The average sound absorption coefficient of the structure reached 0.86, which corresponding to a maximum thickness of 70 mm. Holding the feature of excellent low frequency broadband sound absorption property and rich adjustability,the sound absorption structure will have certain application prospects in the field of noise control engineering.

备注/Memo

备注/Memo:
收稿日期：2020-07-13修回日期：2020-08-21 基金项目：中国博士后基金资助项目（2018M643827）；国家自然科学基金资助项目（11702226）；中央高校基本科研业务费项目（XDJK2020B020）；国家自然科学基金重大项目（11991032，11991034）第一作者：吴飞，男，1987年生，副教授，硕士生导师, Email:wufeifrank@126.com 通讯作者：温激鸿，男，1971年生，研究员，博士生导师， Email:wenjihong@vip.sina.com
更新日期/Last Update: 2020-12-30