中文摘要：

一个宽带数组的健全的地分发用女性的声学和 BEM 被计算。FEM-BEM 模型被建立因为一个九元素的飞机数组和它在变换器之中的精明的相互的放射阻抗的数字方法被给。影响声学表演的相互的放射阻抗的变化法律被分析。飞机数组的择向性和横梁宽度在三回声频率被计算。一条宽带有九个元素的稠密的飞机数组用三重地反响的变换器被开发。飞机数组的输入阻抗和择向性在无回声的水坦克被测量。结果证明根据一半设计数组是合理的数组元素的第一回声频率的波长。数字答案同意测量结果很好，它显示 FEM-BEM 方法是可行的计算健全的地分发并且分析相互的阻抗。

英文摘要：

The sound field distribution of a broadband array is calculated using the acoustics FEM and BEM. The FEM-BEM model is established for a nine-element plane array and its numerical method of calculating mutual radiation impedance among the transducers is given. The changing law of mutual radiation impedance influencing acoustics performances is analyzed. The directivity and beam width of the plane array are calculated at three resonance frequencies. A broadband dense plane array with nine elements is developed using triply resonant transducers. The input impedance and directivity of the plane array are measured in anechoic water tank. Results show that it is reasonable to design the array according to the half wavelengh of the first resonance frequency of the array element. The numerical solution agrees with the measuring results well, which indicates the FEM-BEM method is feasible to calculate sound field distribution and analyze mutual impedances.