具有锥形截面的厚微孔板的吸声性能

IF 0.3 4区 工程技术 Q4 ACOUSTICS
H. Liyan, Chenxi Li, Hu Ying, Haitao Wang, Ran Qing, Haiquan Wu
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引用次数: 0

摘要

本文采用有限元分析方法研究了厚壁锥形微孔板的吸声性能。利用实测的经典MPP样品和新型MPP样品的吸声系数对有限元模型进行了验证。有限元模拟和实验结果表明,锥形截面可以提高吸声系数。此外,有限元模型表明,锥形截面的结构参数是可以优化的。吸声系数的共振频率向高频范围内移动,在锥形截面向背腔移动、锥形截面厚度和底部半径增大三种情况下,吸声系数最大值增大。虽然优化后的锥形截面构型会随着MPP结构参数的不同而有所不同,但它可以改善经典MPP的吸声性能,在噪声和振动工程中具有广阔的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sound absorption of a thick micro-perforated panel with tapered sections
This article aims to investigate the sound absorbing properties of a thick microperforated panel (MPP) with tapered sections with finite element analysis (FEA) models. The FEA model was validated by using the measured sound absorption coefficients of a classic MPP sample and a proposed MPP sample. The FEA simulation and the experiments indicate that the tapered section can enhance the sound absorption coefficient. Moreover, the FEA model shows that the structural parameters of the tapered section can be optimized. The resonance frequency of the sound absorption coefficient moves to the high-frequency range, and the maximum sound absorption coefficient increases in three conditions, the tapered section moving toward the backing cavity, and the increase of the thickness and the bottom radius of the tapered section. Although the optimized configurations of the tapered section may vary with the structure parameters of the MPP, the tapered section can improve the sound absorbing properties of the classic MPP and could be promising in the noise and vibration engineering projects.
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来源期刊
Noise Control Engineering Journal
Noise Control Engineering Journal 工程技术-工程:综合
CiteScore
0.90
自引率
25.00%
发文量
37
审稿时长
3 months
期刊介绍: NCEJ is the pre-eminent academic journal of noise control. It is the International Journal of the Institute of Noise Control Engineering of the USA. It is also produced with the participation and assistance of the Korean Society of Noise and Vibration Engineering (KSNVE). NCEJ reaches noise control professionals around the world, covering over 50 national noise control societies and institutes. INCE encourages you to submit your next paper to NCEJ. Choosing NCEJ: Provides the opportunity to reach a global audience of NCE professionals, academics, and students; Enhances the prestige of your work; Validates your work by formal peer review.
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