摘要
纵振式换能器是水声领域中不可或缺的一类中频段换能器,本文以超磁致伸缩材料Terfenol-D和压电陶瓷材料PZT作为驱动元件设计混合激励纵振式换能器。利用ANSYS有限元软件建立了有限元模型,对换能器的电声参数进行了优化,并制作一宽带混合激励纵振式换能器,实验测得的换能器与仿真的结果较为吻合,实测换能器的最大发送电压响应为145dB,其工作频带为4kHz-16kHz,频带内发送电压响应起伏为±4.5dB。
The longitudinal vibration transducer is an important type of mid-frequency transducer in the field of underwater acoustics. This paper uses the method that combines the material of Terfenol-D with that of PZT to obtain a longitudinal vibration transducer. Using FEM software ANSYS for designing, the transducer is modeled and its electro-acoustic characteristics have been optimized. A broadband transducer is designed and the experimental results are in agreement with the theoretical. A transmitting voltage response level of 145dB is measured. The bandwidth of the transducer is 4kHz- 16kHz and the TVR fluctuation within the bandwidth is ±4.5dB.
出处
《应用声学》
CSCD
北大核心
2010年第2期87-92,共6页
Journal of Applied Acoustics
关键词
磁致伸缩-压电混合换能器
纵振式换能器
有限元
Hybrid magnetostrictive-piezoelectric transducer, Longitudinal vibrationtransducer, Finite element method
