基于Comsol的纵振宽带水声换能器优化  

Optimization of longitudinal broadband underwater acoustic transducer based on Comsol

作　　者：陈劲松 龚诚信 翟亚进 王亚洲 梅雨欣 CHEN Jinsong;GONG Chengxin;ZHAI Yajin;WANG Yazhou;MEI Yuxin(Engineering Training Center,Jiangsu Ocean University,Lianyungang 222005,China)

机构地区：[1]江苏海洋大学工程训练中心,江苏连云港222005

出　　处：《舰船科学技术》2024年第11期145-150,共6页Ship Science and Technology

基　　金：江苏省重点研发计划资助项目(BE2019002-2);连云港521科研资助项目(LGY06521202217)。

摘　　要：为了使换能器得到更大的工作带宽以及降低发射电压响应起伏,提出一种空腔式多激励纵振水声换能器,通过有限元分析,研究换能器在不同阶段的振动模态以及在空气和水中的谐响应特征,实现水声换能器的带宽发射。通过对各个部件的材料、尺寸优化后,得到换能器的工作带宽10~31.5 kHz,发射电压响应起伏5.1 dB以及发射电压响应幅值127 dB。根据优化后的参数加工制作了纵振水声换能器样机,并在消声水池进行实物测试,得到可用工作带宽为11.5~30.5 kHz,发射电压响应起伏在±3 dB,平均幅值126 dB。试验结果和计算机仿真结果基本吻合,符合预期要求。In order to obtain a larger operating bandwidth and reduce the fluctuation of transmitting voltage response,a cavity type longitudinal vibration acoustic transducer is proposed.Through finite element analysis,the vibration modes of the transducer at different stages and the harmonic response characteristics in air and water are studied to realize the bandwidth emission of the acoustic transducer.By optimizing the material and size of each component,the working bandwidth of the transducer is 10~31.5 kHz,the voltage response fluctuation is 5.1 dB and the voltage response amplitude is 127 dB.According to the optimized parameters,a prototype of longitudinal acoustic transducer was manufactured and tested in the anechoic tank.The available bandwidth was 11.5~30.5 kHz,the response voltage fluctuated in±3 dB,and the average amplitude was 126 dB.The experimental results are in good agreement with the computer simulation results and meet the expected requirements.

关 键 词：空腔式 多激励 发射电压响应 工作带宽 

分 类 号：TB556[理学—物理]