Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials

doi:10.1155/2016/2890857

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials
	Chen, Weihua 1,2,3; Chen, Tianning 1,2; Wang, Xiaopeng 1,2; Wu, Jiuhui 1,2; Li, Suobin 1,2
刊名	SHOCK AND VIBRATION
	2016
ISSN号	1070-9622
DOI	10.1155/2016/2890857
英文摘要	To investigate the changing rules between sound absorbing performance and geometrical parameters of porous fibrous metal materials (PFMMs), this paper presents a fractal acoustic model by incorporating the static flow resistivity based on Biot-Allard model. Static flow resistivity is essential for an accurate assessment of the acoustic performance of the PFMM. However, it is quite difficult to evaluate the static flow resistivity from the microstructure of the PFMM because of a large number of disordered pores. In order to overcome this difficulty, we firstly established a static flow resistivity formula for the PFMM based on fractal theory. Secondly, a fractal acoustic model was derived on the basis of the static flow resistivity formula. The sound absorption coefficients calculated by the presented acoustic model were validated by the values of Biot-Allard model and experimental data. Finally, the variation of the surface acoustic impedance, the complex wave number, and the sound absorption coefficient with the fractal dimensions were discussed. The research results can reveal the relationship between sound absorption and geometrical parameters and provide a basis for improving the sound absorption capability of the PFMMs.
资助项目	Natural Science Foundation of Shaanxi Province of China[2015JM5154]
WOS研究方向	Acoustics ; Engineering ; Mechanics
语种	英语
出版者	HINDAWI PUBLISHING CORP
WOS记录号	WOS:000386848000001
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33866]
专题	机电工程学院
通讯作者	Wang, Xiaopeng
作者单位	1.Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China 2.Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Shaanxi, Peoples R China 3.Lanzhou Univ Technol, Coll Mechnoelect Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Chen, Weihua,Chen, Tianning,Wang, Xiaopeng,et al. Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials[J]. SHOCK AND VIBRATION,2016.
APA	Chen, Weihua,Chen, Tianning,Wang, Xiaopeng,Wu, Jiuhui,&Li, Suobin.(2016).Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials.SHOCK AND VIBRATION.
MLA	Chen, Weihua,et al."Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials".SHOCK AND VIBRATION (2016).