Effect of finite length on sound radiation from

1981 ◽  
Author(s):  
M. HAMDI ◽  
J. VELLE
Keyword(s):  
Finite Length ◽  
Sound Radiation

Development of a sound radiation model for a finite-length duct of arbitrary shape

AIAA Journal ◽  
1982 ◽  
Vol 20 (12) ◽  
pp. 1687-1692 ◽  
Author(s):  
M. A. Hamdi ◽  
J. M. Ville
Keyword(s):  
Finite Length ◽  
Arbitrary Shape ◽  
Sound Radiation ◽  
Radiation Model

Study on Applicability of Sound Radiation Characteristics of Thin Finite Length Cylindrical Shells Using Wave Propagation Approach

2012 ◽  
Vol 190-191 ◽  
pp. 1325-1330 ◽  
Author(s):  
Bing Ru Li ◽  
Xuan Yin Wang ◽  
Hui Liang Ge ◽  
Yue Peng Jiang
Keyword(s):  
Wave Propagation ◽  
Boundary Conditions ◽  
Finite Length ◽  
Cylindrical Shells ◽  
Great Influence ◽  
Sound Radiation ◽  
Radiation Characteristics ◽  
Stiffened Shells ◽  
Wave Propagation Method ◽  
Mode Truncation

Based on Donnell’s thin shell theory and basic equations, the wave propagation method is discussed here in detail, which is used to investigate the vibration and sound radiation characteristics of thin finite length circular cylindrical shells and ring stiffened shells under various boundary conditions. The effects of boundary conditions, mode truncation, shell’s length, thickness and rings on the acoustic radiation are explored. It is shown that the wave propagation method is more effective for the long cylindrical shell, and the mode truncation can satisfy the calculation accuracy. The conclusion is drawn that the stiffeners have a great influence on the total mechanical impedance while have a slight influence on radiation impedance. The work will give some guidelines for noise reduction of this kind of shell.

Sound radiation from finite length axisymmetric ducts

1983 ◽  
Vol 90 (2) ◽  
pp. 286-290
Author(s):  
W.L. Meyer ◽  
B.T. Zinn
Keyword(s):  
Finite Length ◽  
Sound Radiation
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