Corrigendum to “Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials”

Shock and Vibration ◽

10.1155/2017/4606748 ◽

2017 ◽

Vol 2017 ◽

pp. 1-1

Author(s):

Weihua Chen ◽

Tianning Chen ◽

Xiaopeng Wang ◽

Jiuhui Wu ◽

Suobin Li

Keyword(s):

Fractal Model ◽

Metal Materials ◽

Fibrous Metal

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Sound absorbing characteristics of fibrous metal materials at high temperatures

Applied Acoustics ◽

10.1016/j.apacoust.2009.09.001 ◽

2010 ◽

Vol 71 (3) ◽

pp. 221-235 ◽

Cited By ~ 45

Author(s):

Fugui Sun ◽

Hualing Chen ◽

Jiuhui Wu ◽

Kai Feng

Keyword(s):

High Temperatures ◽

Metal Materials ◽

Fibrous Metal

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Fractal Model for Acoustic Absorbing of Porous Fibrous Metal Materials

Shock and Vibration ◽

10.1155/2016/2890857 ◽

2016 ◽

Vol 2016 ◽

pp. 1-17 ◽

Cited By ~ 1

Author(s):

Weihua Chen ◽

Tianning Chen ◽

Xiaopeng Wang ◽

Jiuhui Wu ◽

Suobin Li

Keyword(s):

Sound Absorption ◽

Fractal Theory ◽

Fractal Dimensions ◽

Wave Number ◽

Geometrical Parameters ◽

Acoustic Model ◽

Metal Materials ◽

Flow Resistivity ◽

Fibrous Metal ◽

Static Flow

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.

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