Study of Acoustic Numerical Simulation for Structure Random Vibration Based on FEM/BEM

A finite element model of structure vibration and boundary element model for acoustic radiation analysis are established,the acoustic frequency response function is deduced based on FEM/BEM,and the acoustic pressure response feature is formulated by acoustic response function and the spectral density function of the stimulating load.The results of a random vibration plate example show that the FEM/BEM is effective for the acoustic simulation of structure random vibration and the acoustic response feature of random vibration depend on the acoustic response function and the spectral density function of stimulating load.