结构声场耦合系统力激励频率响应有限元分析

FE analysis of the frequency responses at force stimulation on vibrated-acoustical coupled system

分析一平面结构声场耦合系统在力激励下的频率响应,给出声场内具有峰值声压时声场声压分布形状及结构振型,对二者的关系进行了分析,实例分析表明,在力激励下声场内最大声压值出现在结构模态频率附近,声场内具有最大声压值时其声压分布具有对称性。

Finite element analysis of frequency responese at force stimulation on vibrated -acoustical coupled system is researched in this paper. The acoustical pressure distribution in acoustical cavity at peak acoustical pressure and structural vibration shape are analyzed. It is showed that frequency of peak acoustical pressure in acoustical cavity is nearby frequency of structure modal and the acoustical pressure distribution shape in acoustical cavity when having peak acoustical pressure is symmetric.