中文摘要：

研究了前盖板穿单孔夹心式换能器的谐振频率与穿孔尺寸间的变化关系。基于穿单孔换能器的等效电路,利用解析法推导出了该结构换能器的频率方程,计算得到了频率随穿孔尺寸变化的关系曲线,结果发现谐振频率并不是随着穿孔质量的增大而单调上升。在孔深不变时,谐振频率随孔径的增加而增大,而在孔径不变时谐振频率随着孔深的增大先增加后减小,进而解释了其物理意义。

英文摘要：

Stduy on the frequency of the wide-band sandwich transducer with single hole in relation of the hole＇ s size. Get the curve of relation between the frequency of the transducer and the hole＇ s size from the frequency equation baseding on the equivalent circuit of such transducer,then found that the resonance frequency is not enlarging along with the perforation quality at a monotonous increase, but increases first and then reduces with the unchangeable aperture and increase bore depth, while the bore depth is unchangeable, the resonance frequency increases with the aperture enlargeing. Give out the physics explanation of appearanced and receive the corresponding perforation size scope of turning point from the frequency in the response.