为了进一步降低复合棒水声换能器的谐振频率，拓展工作带宽，同时减小发射电压响应起伏，利用有限元软件Comsol对一个三激励宽带复合棒水声换能器的振动模态进行分析，研究弯曲盖板、辐射头的材料和结构尺寸对复合棒水声换能器发射电压响应的影响规律，通过优化结构尺寸改善其发射电压响应。最终优化仿真的结果表明，优化后的复合棒水声换能器工作范围从9～31 kHz，可工作带宽为22 kHz，发射电压响应都处于130 dB以上，有效拓宽了多激励宽带复合棒水声换能器的工作带宽。
In order to further reduce the resonant frequency of the composite rod underwater transducer, expand the working bandwidth, and reduce the fluctuation of the transmission voltage response, the vibration modes of a three-excitation wideband composite rod underwater acoustic transducer are analyzed by using the finite element software COMSOL. The influence of the material and structure size of bent cover plate and radiator on the transmission voltage response of the composite rod underwater acoustic transducer is studied. The transmission voltage response is improved by optimizing the structure size. The results of the final optimization simulation show that the optimized composite rod underwater acoustic transducer has a working range of 9～31 kHz, a working bandwidth of 22 kHz, and a transmission voltage response of more than 130 dB. The work bandwidth of multi-excitation wideband composite rod underwater acoustic transducer is broadened effectively.
2023,45(3): 101-105 收稿日期：2022-07-01
DOI：10.3404/j.issn.1672-7649.2023.03.018
分类号：U666.74
基金项目：江苏省重点研发项目重点项目(BE2019002-2)；江苏高校“青蓝工程”中青年学术带头人资助项目
作者简介：陈劲松(1977-),男,博士,教授,主要研究方向为特种加工技术
