中文版 | English
题名

Acoustic scattering by a finite plate with a poroelastic extension using the unified transform method

作者
通讯作者Liu, Yu
发表日期
2022-03-31
DOI
发表期刊
ISSN
0022-460X
EISSN
1095-8568
卷号522页码:116677
摘要

This paper investigates sound scattering by a finite rigid plate with various extensions using the unified transform method. Different boundary conditions, including rigid, elastic, perforated, and poroelastic conditions are addressed thanks to this efficient method. Parametric studies for the elasticity, the porosity, and the extension length are also conducted over a wide frequency range to explore the combined effects of these variables. Results show that the observed noise reduction can be attributed to the attenuation of pressure difference across the plate. For the case of a finite plate with a poroelastic extension, at a low frequency (k⩽0.1, where k is the non-dimensional wavenumber), porosity can achieve more noise reduction than elasticity. Elasticity generally enhances noise reductions, especially when combined with low porosities. At a high frequency (k⩾10), the maximum noise reduction can be achieved through either high elasticity or large porosity, which is, however, still smaller than that at low frequencies. The extension length is more effective in noise reduction when applied with large porosity at a low frequency or high elasticity at a medium or high frequency. This study reveals the potential noise reduction by a poroelastic extension attached to a finite rigid plate, and helps shed more light on the noise reduction mechanisms as well as an optimal design of realistic poroelastic extensions.

关键词
相关链接[Scopus记录]
收录类别
SCI ; EI
语种
英语
学校署名
第一 ; 通讯
EI入藏号
20220111428569
EI主题词
Acoustic noise ; Acoustic wave scattering ; Elasticity ; Porosity
EI分类号
Acoustic Waves:751.1 ; Acoustic Noise:751.4 ; Physical Properties of Gases, Liquids and Solids:931.2
ESI学科分类
ENGINEERING
Scopus记录号
2-s2.0-85122125671
来源库
Scopus
引用统计
被引频次[WOS]:1
成果类型期刊论文
条目标识符http://sustech.caswiz.com/handle/2SGJ60CL/264248
专题工学院_力学与航空航天工程系
作者单位
1.Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Guangdong, Shenzhen, 518055, China
2.Key Laboratory of Aerodynamic Noise Control, China Aerodynamics Research and Development Center, Sichuan, Mianyang, 621000, China
3.Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
第一作者单位力学与航空航天工程系
通讯作者单位力学与航空航天工程系
第一作者的第一单位力学与航空航天工程系
推荐引用方式
GB/T 7714
Liu, Qian,Liu, Yu,Jiang, Hanbo,et al. Acoustic scattering by a finite plate with a poroelastic extension using the unified transform method[J]. JOURNAL OF SOUND AND VIBRATION,2022,522:116677.
APA
Liu, Qian,Liu, Yu,Jiang, Hanbo,Yang, Yannian,&Zhou, Peng.(2022).Acoustic scattering by a finite plate with a poroelastic extension using the unified transform method.JOURNAL OF SOUND AND VIBRATION,522,116677.
MLA
Liu, Qian,et al."Acoustic scattering by a finite plate with a poroelastic extension using the unified transform method".JOURNAL OF SOUND AND VIBRATION 522(2022):116677.
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