Page 60 - 《应用声学》2024年第6期

第 43 卷 第 6 期 Vol. 43, No. 6
2024 年 11 月 Journal of Applied Acoustics November, 2024

⋄ 研究报告 ⋄

复合材料级联结构宽频吸声性能研究

张俊超 1† 陈龙虎 2

(1 郑州工业应用技术学院机电工程学院 郑州 451100)
(2 南京大学现代工程与应用科学学院 南京 210000)
摘要：为了有效地抑制宽频强噪声的声辐射，该文设计了多孔材料与亥姆霍兹共振吸声结构的级联吸声结
构，声波通过多孔材料后进入低频宽带吸声超材料结构 (SHRs)，会降低结构的吸声效果，然后对多孔材料与
SHRs 吸声孔的对应位置进行穿孔，可以在不影响多孔材料高频吸声效果的同时，提升 SHRs 结构的低频吸声
能力。首先，通过理论分析、COMSOL 数值模拟与实验测试相结合的方法研究了 SHR 吸声机理及关键参数对
吸声性能的影响规律，设计的低频宽带吸声结构 (厚度 60 mm) 的仿真与实验结果显示在 120∼160 Hz 频段内
的吸声值均大于 0.9。然后设计了多孔材料复合吸声结构 (厚度 260 mm)，实现了在 100∼10000 Hz 频带内的平
均吸声系数至 0.97，为工业降噪领域提供了新的解决方式。
关键词：螺旋内插管；多孔材料；复合结构；宽频吸收
中图法分类号: O42 文献标识码: A 文章编号: 1000-310X(2024)06-1236-07
DOI: 10.11684/j.issn.1000-310X.2024.06.006

The broadband sound absorption and insulation properties of

composite materials

ZHANG Junchao 1 CHEN Longhu 2

(1 School of Mechanical and Electrical Engineering, Zhengzhou University of Industrial Technology,
Zhengzhou 451100, China)
(2 College of Engineering and Applied Sciences, Nanjing University, Nanjing 210000, China)

Abstract: In order to effectively suppress the acoustic radiation of broadband noise, the paper designed a
cascade acoustic structure of porous material and Helmholtz resonance acoustic structure. The acoustic wave
passes through the porous material and then enters the low-frequency broadband acoustic absorbing metamate-
rial structures (SHRs), which will reduce the acoustic absorption effect of the structure. Then the corresponding
positions of the porous materials and the sound-absorbing holes of SHRs are perforated, which can enhance
the low-frequency sound-absorbing ability of the SHRs structure without affecting the high-frequency sound-
absorbing effect of the porous materials. Firstly, the sound absorption mechanism of SHR structure and the
influence of key parameters on the sound absorption performance were studied through theoretical analysis,
COMSOL numerical simulation and experimental test. The simulation and experimental results of the de-
signed low-frequency broadband sound absorption structure (thickness 60 mm) show that the sound absorption
value is greater than 0.9 in the frequency band of 120–160 Hz. Then the sound absorption structure of porous
material composite (thickness 260 mm) is designed, and the average sound absorption coefficient is 0.97 in the
frequency band of 100–10000 Hz, which provides a new solution for industrial noise reduction field.
Keywords: Spiral intubation; Porous material; Composite structure; Broadband absorption

2023-07-31 收稿; 2023-10-14 定稿
作者简介: 张俊超 (1991– ), 男, 河南郑州人, 硕士, 研究方向: 工业材料。
通信作者 E-mail: 004586@zzuit.edu.cn
†