Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials
Joint Authors
Wang, Xiaopeng
Chen, Tianning
Chen, Weihua
Wu, Jiuhui
Li, Suobin
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-16
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
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.
American Psychological Association (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،Vol. 2016, no. 2016, pp.1-17.
https://search.emarefa.net/detail/BIM-1118940
Modern Language Association (MLA)
Chen, Weihua…[et al.]. Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials. Shock and Vibration No. 2016 (2016), pp.1-17.
https://search.emarefa.net/detail/BIM-1118940
American Medical Association (AMA)
Chen, Weihua& Chen, Tianning& Wang, Xiaopeng& Wu, Jiuhui& Li, Suobin. Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials. Shock and Vibration. 2016. Vol. 2016, no. 2016, pp.1-17.
https://search.emarefa.net/detail/BIM-1118940
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118940