超细微穿孔板构筑轻质结构的吸声特性研究

doi:10.3969/j.issn.1004-132X.2023.20.001

中国机械工程 ›› 2023, Vol. 34 ›› Issue (20): 2395-2402.DOI: 10.3969/j.issn.1004-132X.2023.20.001

• 机械基础工程 • 上一篇

超细微穿孔板构筑轻质结构的吸声特性研究

刘杰1;翦林杰2;窦泽城1;文桂林1;王锐坤2;李方义2

1.燕山大学机械工程学院，河北省轻质结构设计与制备工艺技术创新中心，秦皇岛，066004
2.广州大学机械与电气工程学院，广州，510006

出版日期:2023-10-25 发布日期:2023-11-13
通讯作者: 文桂林（通信作者），男，1970年生，教授、博士研究生导师。研究方向为特种装备与特种车辆设计开发、动力学理论与智能控制、结构CAE与优化等。E-mail:glwen@ysu.edu.cn。
作者简介:刘杰，男，1989年生，讲师、博士研究生导师。研究方向为轻质结构减振降噪及优化。E-mail:jliu@ysu.edu.cn。
基金资助:
国家自然科学基金(12172095,11832009)；广东省自然科学基金(2021A1515010320)；广州市科技计划(202201020193,202201010399)

On Sound Absorption Characteristics of Lightweight Structures Constructed by UMPPs

LIU Jie1;JIAN Linjie2;DOU Zecheng1;WEN Guilin1;WANG Ruikun2;LI Fangyi2

1.School of Mechanical Engineering,Hebei Innovation Center for Equipment Lightweight Design and
Manufacturing,Yanshan University,Qinhuangdao,Hebei，066004
2.School of Mechanical and Electrical Engineering,Guangzhou University,Guangzhou，510006

Online:2023-10-25 Published:2023-11-13

摘要/Abstract

摘要： 为了解决传统微穿孔板中低频有效吸声带宽过窄的问题，设计了一种超细微穿孔板(UMPP)构筑轻质结构，建立了基于微穿孔板理论的吸声理论模型和高保真有限元模型，并搭建了基于声阻抗管的吸声测试系统。研究了单层、双层、三层UMPP吸声结构的吸声特性，发现单层UMPP吸声结构具有较好的有效吸声带宽，但存在明显的吸声波谷，并利用归一化声阻和归一化声抗揭示了其吸声机理。为了进一步改善所提UMPP吸声结构的吸声性能，提出了一种结构优化设计策略，实现了亚波长尺度下（1/8波长），369~7000 Hz频率内的宽频有效吸声。

关键词: 超细微穿孔板, 吸声理论模型, 结构优化设计, 吸声带宽

Abstract: To address the problems that the effective sound absorption bandwidth of conventional micro-perforated panels was too narrow in the middle and low frequencies, a UMPP constructed lightweight structure was proposed. A theoretical model of sound absorption based on the micro-perforated plate theory and a high-fidelity finite element model were established, and an acoustic impedance tube-based sound absorption test system was built. The sound absorption characteristics of single-layer, double-layer, and triple-layer UMPP sound absorbing structure were investigated. Results show that the single-layer UMPP sound absorbing structure has a better sound absorption bandwidth, but there are obvious sound absorption valleys. The sound absorption mechanism was revealed from the perspective of normalized acoustic resistance and normalized acoustic reactance. To further improve the sound absorption performance of the proposed UMPP structures, a structural optimization design strategy was proposed to realize effective sound absorption in the sub-wavelength scale(1/8 wavelength) with a wide frequency range of 369~7000 Hz.

Key words: , ultra-micro-perforated panel(UMPP), theoretical model of sound absorption, structural optimization design, sound absorption bandwidth

中图分类号:

TB535

刘杰, 翦林杰, 窦泽城, 文桂林, 王锐坤, 李方义. 超细微穿孔板构筑轻质结构的吸声特性研究[J]. 中国机械工程, 2023, 34(20): 2395-2402.

LIU Jie, JIAN Linjie, DOU Zecheng, WEN Guilin, WANG Ruikun, LI Fangyi. On Sound Absorption Characteristics of Lightweight Structures Constructed by UMPPs[J]. China Mechanical Engineering, 2023, 34(20): 2395-2402.

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超细微穿孔板构筑轻质结构的吸声特性研究

On Sound Absorption Characteristics of Lightweight Structures Constructed by UMPPs

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