Page 89 - 《应该声学》2022年第2期
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第 41 卷 第 2 期                                                                       Vol. 41, No. 2
             2022 年 3 月                          Journal of Applied Acoustics                    March, 2022

             ⋄ 研究报告 ⋄



                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                                         ∗





                                          刘文钊     1,2,3  柴 勇     1,3†  莫喜平     1



                                              (1  中国科学院声学研究所      北京   100190)
                                                (2  中国科学院大学     北京   100049)
                                         (3  北京海洋声学装备工程技术研究中心          北京   100190)
                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。
                关键词：Janus 换能器；混合激励；宽带；多模态耦合
                中图法分类号: TB565.1           文献标识码: A          文章编号: 1000-310X(2022)02-0257-06
                DOI: 10.11684/j.issn.1000-310X.2022.02.011




                 Relationship between structural characteristic parameters and longitudinal
              vibration frequencies of hybrid magnetostrictive-piezoelectric Janus transducer


                                      LIU Wenzhao  1,2,3  CHAI Yong 1,3  MO Xiping 1

                               (1 Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China)
                                   (2 University of Chinese Academy of Sciences, Beijing 100049, China)
                     (3 Beijing Engineering Technology Research Center of Ocean Acoustic Equipment, Beijing 100190, China)

                 Abstract: 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 char-
                 acteristic 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.
                 Keywords: Janus transducer; Hybrid; Broadband; Multiple-mode-coupling


             2021-04-04 收稿; 2021-05-31 定稿
             国家自然科学基金项目 (11874387)
             ∗
             作者简介: 刘文钊 (1996– ), 男, 湖南武冈人, 硕士研究生, 研究方向: 声学换能器与声学材料。
             † 通信作者 E-mail: chaiyong@mail.ioa.ac.cn
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