文章摘要
杨斌颖,王艳.基于多普勒激光测振仪的Ⅲ型弯张换能器振动模态分析[J].声学技术,2019,(2):232~236
基于多普勒激光测振仪的Ⅲ型弯张换能器振动模态分析
Vibration modal analysis of Class Ⅲ flextensional transducer based on Doppler laser vibrometer
投稿时间:2018-01-10  修订日期:2018-03-20
DOI:10.16300/j.cnki.1000-3630.2019.02.020
中文关键词: 激光测振仪|Ⅲ型弯张换能器|振动模态分析|有限元
英文关键词: laser vibrometer|Class Ⅲ flextensional transducer|vibration modal analysis|finite element
基金项目:七二六所所创基金项目
作者单位E-mail
杨斌颖 上海船舶电子设备研究所, 上海 201108 710368525@qq.com 
王艳 上海船舶电子设备研究所, 上海 201108  
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中文摘要:
      为了测量和验证Ⅲ型弯张换能器在工作状态时辐射面的振动情况,采用多普勒激光测振仪对Ⅲ型弯张换能器的振动模态进行了测量,并与有限元软件仿真结果进行了对比。测量得到换能器壳体的一阶振动模态的谐振频率为1729 Hz,换能器一阶振动模态的谐振频率为2 065 Hz,与有限元模态仿真结果吻合较好。研究结果表明,多普勒激光测振仪能较好地对换能器的振动模态进行测量,可用于换能器的辅助设计。
英文摘要:
      In order to test and verify the radiation surface vibration of Class Ⅲ flextensional transducer in working state, Doppler laser vibrometer is used to measure the vibration modes of Class Ⅲ flextensional transducer, and then the measuring result is compared with the simulation result of finite element software. The measurement shows that the resonant frequency of the first-order vibration mode of transducer shell is 1 729 Hz, and the resonant frequency of the first-order vibration mode of transducer is 2 065 Hz. They are closed to the simulation results. Research results show that Doppler laser vibrometer could be well used for measuring transducer vibration mode and for transducer aided design.
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