要研究隔声罩的隔声效果,最重要的是分析隔声罩结构的辐射特性,因此就需要分析板结构的辐射特性,而在很多工程实践中加筋板常被用来增加承重。首先对简单的无加筋板运用Wallace求解远场声压基础上对声辐射效率进行分析,对于复杂的加筋板结构运用离散的方法进行分析,通过对比验证其方法正确性,进而分析有无加筋板的辐射效率和隔声效果。结果表明加筋板结构在某一频段上辐射效率较高,隔声量较小。 To study the sound insulation effect of the sound insulation cover, the most important one is to analyze the radiation characteristics of the sound insulation cover structure. Therefore, it is necessary to analyze the radiation characteristics of the board structure, and in many engineering practices, the reinforcement plate is often used to increase the load bearing capacity. Firstly, the sound radiation efficiency of the simple unstiffened slab was calculated by using Wallace to solve the far-field sound pressure. The discrete stiffened slab structure was analyzed by using discrete method. The correctness of the method was verified by comparison. Radiation efficiency and sound insulation of stiffened panels. The results show that the stiffened plate structure has higher radiation efficiency in a certain frequency band and smaller amount of sound insulation.