Prediction Framework for Vibration Mode Induced Noise of Structure-acoustic Coupling System

2021 ◽  
Vol 31 (6) ◽  
pp. 632-641
Author(s):  
Jae-Seung Hwang ◽  
Min-Jeong Song ◽  
Jong-Kwan Ryu
Keyword(s):  
Vibration Mode ◽  
Acoustic Coupling ◽  
Coupling System

Acoustic coupling system

1982 ◽  
Vol 72 (3) ◽  
pp. 1101-1101
Author(s):  
Bruce J. Brown
Keyword(s):  
Acoustic Coupling ◽  
Coupling System

512 Eigenvalue Problem of a Vibro-Acoustic Coupling System

2012 ◽  
Vol 2012 (0) ◽  
pp. _512-1_-_512-10_
Author(s):  
Hiroyuki IWAMOTO ◽  
Nobuo TANAKA ◽  
Yusuke TAKARA
Keyword(s):  
Eigenvalue Problem ◽  
Acoustic Coupling ◽  
Coupling System

scholarly journals Vibro-acoustic coupling characteristics of orthotropic L-shaped plate–cavity coupling system

2019 ◽  
Vol 39 (4) ◽  
pp. 1102-1126
Author(s):  
Dongyan Shi ◽  
Wenhui Ren ◽  
Hong Zhang ◽  
Gai Liu ◽  
Qingshan Wang
Keyword(s):  
Boundary Conditions ◽  
Sound Pressure ◽  
Future Research ◽  
Response Analysis ◽  
Acoustic Coupling ◽  
Acoustic Cavity ◽  
Coupling System ◽  
Cavity Coupling ◽  
Coupling Characteristics ◽  
Admissible Functions

The research object of this paper is the L-shaped plate–cavity coupling system established by a cuboid acoustic cavity with rigid-wall or impedance-wall and L-shaped plate with numerous elastic boundary conditions in view of the Fourier series method. The main research content of this paper is the vibro-acoustic coupling characteristics. In this paper, the displacements admissible functions of the L-shaped plate are generally set as the sum of two cosines’ product and two polynomials. Sound pressure admissible functions of the cuboid acoustic cavity can be considered as the sum of three cosines’ product and six polynomials. The discontinuity of coupling system at all boundaries in the overall solution domain is overcome in this way. Through the energy principle and the Rayleigh-Ritz technology, it can be got that the solving matrix equation of the L-shaped plate-cavity coupling system. Based on verifying the great numerical characteristics of the L-shaped plate–cavity coupling model, they obtained both the frequency analysis and the displacement or sound pressure response analysis under the excitation, including a unit simple harmonic force or a unit monopole source. The advantages of this method are parameterization and versatility. In addition, some new achievements have been shown, based on various materials, boundary conditions, thicknesses, and orthotropic degrees, which may become the foundation for the future research.

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