噪声与振动控制2025，Vol.45Issue(2)：273-279,286,8.DOI:10.3969/j.issn.1006-1355.2025.02.043
一种穿孔板与多孔材料层并联组合结构的吸声特性研究
Sound Absorption Characteristics of a Combined Structure Consisting of Perforated Plate and Porous Material Layer in Parallel Arrangement
摘要
Abstract
To improve the sound absorption performance of the perforated plate and porous material in low and middle frequency range,a combined structure consisting of a common perforated plate and a thin porous material layer in parallel ar-rangement was proposed.A theoretical model was established using the acoustic-electric analogy method and a numerical model was built based on COMSOL Multi-physical field finite element software,and verified by sound absorption measure-ments in an acoustic impedance tube.The sound absorption mechanism and acoustic properties of the combined structure were elaborated deeply by means of acoustic energy distribution and parametric analysis.Based on the particle swarm opti-mization algorithm,the sound absorption of the combined structure and the classical micro-perforated plate structure was op-timized and compared.It is shown that the acoustic energy dissipation of the combined structure is mainly attributed to the resonance effect of the perforated plate in the low-frequency domain and the air viscosity and heat conduction effects of the porous material layer in the high-frequency domain.The parametric analyses show that for the perforated plate with a re-duced aperture diameter and perforation rate,a large thickness and a large occupation area,the combined structure can achieve better sound absorption in low-mid frequency range.Measurement results also confirm that compared with a homo-geneous porous layer of the same thickness,the combined structure composed of thin layers has the potential to extend the sound absorption spectrum obviously.The proposed combined structure is expected to be applied in low and medium fre-quency noise reduction scenarios such as acoustic isolation chambers for transformers and exhaust mufflers for cooling tow-ers.关键词
声学/穿孔板/多孔材料/并联组合/吸声性能/预测验证Key words
acoustics/perforated plate/porous material/parallel arrangement/property of sound absorption/prediction and validation引用本文复制引用
李新,周晓炳,石黄霞,崔祖涛,刘碧龙..一种穿孔板与多孔材料层并联组合结构的吸声特性研究[J].噪声与振动控制,2025,45(2):273-279,286,8.基金项目
新疆维吾尔自治区高校基本科研业务费科研资助项目(XJEDU2023P137) （XJEDU2023P137）
新疆维吾尔自治区"天池英才"引进计划-青年博士资助项目(2023XGYT-CYC06) （2023XGYT-CYC06）
