Page 158 - 《应用声学》2022年第6期

第 41 卷 第 6 期 Vol. 41, No. 6
2022 年 11 月 Journal of Applied Acoustics November, 2022

⋄ 研究报告 ⋄

经典局域共振型水声超材料的吸隔声性能研究 ∗

葛丽丽 1 彭子龙 1† 柴鹏程 1 程一鹏 1 黄唯纯 2

(1 江苏科技大学振动噪声研究所 镇江 212100)
(2 南京大学 固体微结构物理国家重点实验室 现代工程与应用科学学院 南京 210093)

摘要：基于传统水声材料结构复杂以及吸声频段窄等相关缺点，该文提出了一种局域共振型水声超材料，通
过有限元建立水声超材料模型，分析该结构吸声性能影响因素。此外为了验证钢背衬的隔声性能，在该水声
超材料结构基础上添加一层 0.005 m 厚的钢背衬进行仿真对比。研究结果表明，在频段为 600∼4000 Hz 时，水
声超材料声学性能较好，吸声性能整体较优，且添加钢背衬的水声超材料隔声性能较优，甚至在某频率点达到
13 dB 的隔声差值。此外通过位移场图进一步揭示水声超材料的吸声机理，发现水声超材料结构的位移场和
钢背衬都对吸声性能会产生影响：钢背衬通过共振增强结构整体的位移大小，不仅显著提高结构的隔声性能
而且还增强结构的吸声性能；而位移场则通过位移幅度影响吸声性能，位移幅度越大，结构的吸声性能越好。
关键词：水声超材料；吸隔声性能；局域共振
中图法分类号: O429 文献标识码: J 文章编号: 1000-310X(2022)06-1004-06
DOI: 10.11684/j.issn.1000-310X.2022.06.019

Sound absorption and insulation properties of underwater acoustic metamaterials
based on classical local resonance

GE Lili 1 PENG Zilong 1 CHAI Pengcheng 1 CHENG Yipeng 1 HUANG Weichun 2

(1 Institute of Vibration and Noise, Jiangsu University of Science and Technology, Zhenjiang 212100, China)
(2 School of Modern Engineering and Applied Sciences, State Key Laboratory of Solid Microstructure Physics, Nanjing
University, Nanjing 210093, China)

Abstract: Based on the complex structure and narrow sound absorption band of traditional underwater
acoustic materials, a local resonance underwater acoustic metamaterial is proposed in this paper. The
underwater acoustic metamaterial model is established by finite element method, and the influencing factors
of the sound absorption performance of the structure are analyzed. In addition, in order to verify the sound
insulation performance of steel backing, A layer of 0.005 m thick steel backing is added to the underwater
acoustic metamaterial structure for simulation comparison. The results show that when the frequency band is
600–4000 Hz, the acoustic performance of underwater acoustic metamaterials is better, the sound absorption
performance is better as a whole, and the sound insulation performance of underwater acoustic metamaterials
with steel backing is better, even reaching a sound insulation difference of 13 dB at a certain frequency point
In addition, the sound absorption mechanism of underwater acoustic metamaterial is further revealed through
the displacement field diagram. It is found on the sound absorption performance. The steel backing enhances

2021-10-06 收稿; 2022-02-15 定稿
江苏省自然科学青年基金项目 (BK20200995), 国防科技基础加强计划技术领域基金项目 (2020-JCJQ-JJ-228)
∗
作者简介: 葛丽丽 (1996– ), 女, 江苏宿迁人, 硕士研究生, 研究方向: 水中目标声学特性。
† 通信作者 E-mail: zlp_just@sina.com