Dynamic sound absorption characteristics of a series piezoelectric acoustic absorber regulated by voltage

doi:10.1121/10.0011639

	Dynamic sound absorption characteristics of a series piezoelectric acoustic absorber regulated by voltage
	Xu, He 1,2; Kong, Deyi 1
刊名	JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
	2022-06-01
卷号	151
ISSN号	0001-4966
DOI	10.1121/10.0011639
通讯作者	Kong, Deyi(kongdy@iim.ac.cn)
英文摘要	A piezoelectric acoustic absorber composed of double micro-perforated panels (MPPs) and their back cavity is studied in this paper. The outer layer of the MPP absorber is a common metal MPP, and the inner layer is a piezoelectric MPP made of polyvinylidene fluoride (PVDF) film. When an alternating voltage is applied to the polyvinylidene fluoride (PVDF)-micro-perforated panel (MPP), it can be excited to generate different structural vibration modes, which can bring an additional absorption peak to the absorption performance curve of the piezoelectric acoustic absorber. The numerical simulation and experimental results indicate that the frequency and sound absorption coefficient of the additional sound absorption peak are closely related to the voltage parameters. Especially when the frequency of the alternating voltage is close to the eigen-frequency of PVDF-MPP, the additional sound absorption peak is more significant. Therefore, the absorption coefficient of the piezoelectric acoustic absorber at the corresponding frequency can be effectively enhanced by appropriately adjusting the parameters of the excitation voltage. This method of selectively and specifically improving the sound absorption performance of the required frequency band is very effective in reducing the noise in the dynamic change. (C) 2022 Acoustical Society of America.
资助项目	National Natural Science Foundation of China[11774355]
WOS关键词	MICRO-PERFORATED PANEL ; MICROPERFORATED PANEL ; CAVITY ; MPP
WOS研究方向	Acoustics ; Audiology & Speech-Language Pathology
语种	英语
出版者	ACOUSTICAL SOC AMER AMER INST PHYSICS
WOS记录号	WOS:000807998700002
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131301]
专题	中国科学院合肥物质科学研究院
通讯作者	Kong, Deyi
作者单位	1.Chinese Acad Sci, State Key Lab Transducer Technol, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Xu, He,Kong, Deyi. Dynamic sound absorption characteristics of a series piezoelectric acoustic absorber regulated by voltage[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,2022,151.
APA	Xu, He,&Kong, Deyi.(2022).Dynamic sound absorption characteristics of a series piezoelectric acoustic absorber regulated by voltage.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,151.
MLA	Xu, He,et al."Dynamic sound absorption characteristics of a series piezoelectric acoustic absorber regulated by voltage".JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 151(2022).