国防科技大学学报2024，Vol.46Issue(4)：96-103,8.DOI:10.11887/j.cn.202404010
声波式机械天线的谐振频率调控方法
Resonant frequency control method of acoustic mechanical antenna
摘要
Abstract
Acoustic mechanical antenna is one of the important types of mechanical antenna,the resonant frequency of acoustic mechanical antenna is highly coupled with its natural frequency.However,the current acoustic mechanical antenna is limited by material size and has high resonant frequency,which can not to meet the needs of very low frequency or lower frequency band.In order to control the resonant frequency of acoustic mechanical antenna,the vibration modeling of acoustic mechanical antenna was carried out.Three methods were proposed:adding unilateral fixed constraint,increasing free end mass and removing some materials of antenna.Proposed method was verified by finite element simulation.Results show that the three methods can effectively control the resonant frequency of acoustic mechanical antenna,and are in good agreement with the analytical model.Influence of three methods of regulating resonant frequency on the electric field or magnetic field intensity radiated by the antenna was studied through the stress distribution,which has important reference significance for the design of acoustic mechanical antenna.关键词
声波式机械天线/甚低频/固有频率/有限元/磁电复合材料Key words
acoustic mechanical antenna/very low frequency/natural frequency/finite element/magnetoelectric composites material分类
信息技术与安全科学引用本文复制引用
崔勇,李良亚,王琛,黄玉平,袁志鸿,陶云飞..声波式机械天线的谐振频率调控方法[J].国防科技大学学报,2024,46(4):96-103,8.基金项目
国家自然科学基金资助项目(51707006) （51707006）
