Page 99 - 《应用声学》2024年第1期

第 43 卷 第 1 期 Vol. 43, No. 1
2024 年 1 月 Journal of Applied Acoustics January, 2024

⋄ 研究报告 ⋄

基于低频吸声超构材料的复合消声器 ∗

陈 键 李治含 黄唯纯 † 钟雨豪 陈龙虎 卢明辉 陈延峰

(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：针对管道内低频噪声难以抑制的问题，基于亥姆霍兹共振腔阵列吸声板和穿孔管消声器组合，设计了一
种复合式宽带消声器。首先利用有限元法仿真分析传统穿孔管消声器，发现中低频消声能力较差，通过嵌入亥
姆霍兹共振腔阵列吸声板吸收中低频噪声。采用仿真与实验的方式研究吸声板的声学性能：在 400 ∼ 1000 Hz
频段内的平均吸声系数达到了 0.88。然后对复合式消声器进行数值模拟及 3D 打印阻抗管实验测试对比：复合
式消声器在 400 ∼ 1718 Hz 频率范围内的平均传递损失为 18.15 dB。最终实现了管道内全频带噪声有效控制。
关键词：管道低频噪声；亥姆霍兹共振腔阵列；穿孔管消声器；复合式消声器；全频带
中图法分类号: O429 文献标识码: A 文章编号: 1000-310X(2024)01-0095-05
DOI: 10.11684/j.issn.1000-310X.2024.01.012

Composite muffler based on low-frequency sound absorbing metamaterials

CHEN Jian LI Zhihan HUANG Weichun ZHONG Yuhao CHEN Longhu

LU Minghui CHEN Yanfeng

(National Laboratory of Solid State Microstructures and College of Engineering and Applied Sciences,
College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China)

Abstract: To solve the problem of low-frequency noise in pipeline, a composite broadband muffler is designed
based on the combination of Helmholtz resonant cavity (HR) array sound-absorbing plate and perforated tube
muffler. Firstly, the finite element method is used to simulate and analyze the traditional perforated tube
muffler, and it is found that the noise attenuation ability is poor in the middle and low frequency. Simulation
and experiment were used to study the acoustic performance of the sound absorption board: the average
sound absorption coefficient reached 0.88 in the 400–1000 Hz frequency band. Then, numerical simulation and
3D printed impedance tube test were carried out for the composite muffler: the average transfer loss of the
composite muffler was 18.15 dB in the frequency range of 400–1718 Hz, and the effective control of full-frequency
noise in the pipeline was finally realized.
Keywords: Low-frequency noise in pipeline; Helmholtz resonator array; Perforated tube muffler; Composite
muffler; Full-frequency band

2022-08-19 收稿; 2022-12-08 定稿
国家重点研发计划项目 (2021YFB3801800, 2018YFA0306200, 2017YFA0303702), 国家自然科学基金项目 (11890700, 51732006,
∗
11625418)
作者简介: 陈键 (1997– ), 男, 河南信阳人, 硕士研究生, 研究方向: 声学超构材料, 吸声降噪。
† 通信作者 E-mail: weichunhuang@nju.edu.cn