| 刘文钊,柴勇,莫喜平.磁致伸缩-压电混合激励Janus换能器结构特征参量与纵振频率之间的关系*[J].,2022,41(2):257-262 |
| 磁致伸缩-压电混合激励Janus换能器结构特征参量与纵振频率之间的关系* |
| Relationship between structural characteristic parameters and longitudinal vibration frequencies of hybrid magnetostrictive-piezoelectric Janus transducer |
| 投稿时间：2021-04-04 修订日期：2022-03-01 |
| 中文摘要: |
| 为了拓宽Janus换能器的工作频带,使用超磁致伸缩材料Terfenol-D与PZT压电陶瓷作为混合激励元件驱动Janus换能器，研究了其结构特征参量与纵振频率之间的关系。首先归纳了磁致伸缩-压电混合激励Janus换能器的12个结构特征参量。随后通过模态分析,证明换能器具有两种纵振动模态。最终经过有限元仿真计算,总结分析了结构特征参量变化对两种纵振动模态频率的影响规律。研究结果为如何通过调整结构特征参量实现多模态耦合并拓宽此型换能器的工作频带提供了一定依据。 |
| 英文摘要: |
| To expand the working bandwidth of traditional Janus transducer, a hybrid Janus transducer driven by the union of giant magnetostrictive material Terfenol-D and piezoelectric ceramic PZT is proposed. The study on the relationship between structural characteristic parameters and longitudinal vibration frequencies is carried out. Twelve structural characteristic parameters are summarized at first. Then two longitudinal characteristic modes are confirmed by the modal analysis. Finally, the variety relationship between the structural parameters and two longitudinal characteristic modes are studied in detail by finite element analysis. These results provide basis for further research on how to achieve better multiple-mode-coupling effect and make the bandwidth of this new transducer broader by adjusting structural characteristic parameters. |
| DOI：10.11684/j.issn.1000-310X.2022.02.011 |
| 中文关键词: Janus换能器 混合激励 宽带 多模态耦合 |
| 英文关键词: Janus transducer Hybrid Broadband Multiple-mode-coupling |
| 基金项目:国家自然科学基金项目(11874387) |
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