基于格林函数的无障板结构声辐射分析

Sound radiation of unbaffled plate based on Green function

研究了处于无限大流体声介质中无障板简支板的声辐射问题 .利用三维声场中声波方程的格林函数 ,推导了辐射声压的一般解析表达式 .计算表明宽频带总辐射声功率级随着板厚的增加而降低 。

Sound radiation by a simply supported unbaffled plate was presented. The analytical expression of radiation pressure was deduced based on the Green function of three dimensional wave equation. The plate response was developed in a series of the simply supported plate modes. The results showed that the total radiation power decreased with the increase of the thickness and it was disadvantageous to decrease the total radiation powering in the mid point load.