海军航空大学学报2025，Vol.40Issue(5)：706-716,11.DOI:10.7682/j.issn.2097-1427.2025.05.006
具有折叠穿孔通道面板的吸声器声学特性
Acoustic Characteristics of a Sound Absorber with Folded Perforated Channel Panels
摘要
Abstract
Traditional single-degree-of-freedom sound absorbers require large structural volumes to achieve low-frequency sound absorption,which limits their practical applications.To address this limitation,a sound absorber struc-ture covered with folded perforated plates has been investigated.A combination of theoretical analysis,numerical simu-lations,and experimental validation is employed to explore the design of folded perforated channels within the absorber.This design extends the sound propagation path,enabling low-frequency sound absorption without increasing the overall thickness of the sound absorber.The study focuses on evaluating the sound absorption performance of the sound ab-sorber with different folding channel designs of the perforated panel and proposes a non-uniform panel design method for broadband absorption.To predict the sound absorption performance of the proposed configuration,a theoretical model based on the transfer matrix method has been established.The results demonstrate that increasing the sound propagation path within the perforated plate effectively shifts the sound absorption frequency to lower values.Further-more,a particle swarm optimization algorithm is proposed to achieve a broadband sound absorption design for this ab-sorber,enabling efficient sound absorption in the frequency range of 600 Hz to 1 000 Hz,with an average sound absorp-tion coefficient of 0.897.关键词
低频吸声/延长声传播路径/粒子群算法/宽频吸声Key words
low-frequency sound attenuation/extended sound propagation path/particle swarm optimization/broadband sound absorption分类
通用工业技术引用本文复制引用
韩俊,周杰,徐靖鉴,宋翔,王小锋,卜焕先..具有折叠穿孔通道面板的吸声器声学特性[J].海军航空大学学报,2025,40(5):706-716,11.基金项目
广东省自然科学基金(2024A1515011599) （2024A1515011599）
西北工业大学太仓智汇港学生创新基金(TCCX240227) （TCCX240227）
