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Acoustic Sensitivity Study of Structure Acoustic Radiation Baed on BEM Method

Zhao Wen-zhong

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Abstract

Acoustic sensitivity method is developed to perform sensitivity analysis of sound pressure with respect to structure vibration velocity.BEM analysis method and acoustic sensitivity are deduced.Structure dynamic response is calculated by using FEM method,and the vibration velocity achieved in FEM is applied as boundary condition in BEM,the response sound pressure and acoustic sensitivity are calculated by BEM method.The validity of this method is demonstrated through the examples of radiation box.

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What this paper is about

Acoustic sensitivity method is developed to perform sensitivity analysis of sound pressure with respect to structure vibration velocity.BEM analysis method and acoustic sensitivity are deduced.Structure dynamic response is calculated by using FEM method,and the vibration velocity achieved in FEM is applied as boundary condition in BEM,the response sound pressure and acoustic sensitivity are calculated by BEM method.The validity of this method is demonstrated through the examples of radiation box.

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Available abstract

Acoustic sensitivity method is developed to perform sensitivity analysis of sound pressure with respect to structure vibration velocity.BEM analysis method and acoustic sensitivity are deduced.Structure dynamic response is calculated by using FEM method,and the vibration velocity achieved in FEM is applied as boundary condition in BEM,the response sound pressure and acoustic sensitivity are calculated by BEM method.The validity of this method is demonstrated through the examples of radiation box.

Key concepts: Sensitivity (control systems), Boundary element method, Acoustics, Sound pressure, Acoustic radiation, Vibration, Finite element method, Acoustic wave equation

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