| 李英明,莫喜平,潘耀宗,张运强,崔斌.铁镓驱动弯曲圆盘换能器设计及振动特性研究[J].,2016,35(6):471-479 |
| 铁镓驱动弯曲圆盘换能器设计及振动特性研究 |
| Flexural vibration of bender disk transducer driven by Galfenol |
| 投稿时间：2016-03-14 修订日期：2016-11-07 |
| 中文摘要: |
| 为了研究新型磁致伸缩材料——铁镓合金（Galfenol）在换能器中应用，本文设计了一种低频弯曲圆盘换能器。借助有限元软件仿真分析换能器振动模态，对换能器结构参数进行优化设计，并研制了换能器样品。利用激光测振仪测量了换能器空气中模态及不同电流驱动下振动位移，测得振动模态与仿真结果吻合，换能器空气中共振频率为913 Hz，辐射头能够产生的最大振动位移达到93 μm，磁致伸缩材料达到饱和应变。结果表明：铁镓材料能够驱动弯曲圆盘换能器大振幅振动；铁镓作为磁致伸缩换能器驱动材料具有较好的应用前景。 |
| 英文摘要: |
| Iron-gallium(Galfenol) is the most recent magnetostrictive material. A bender disk transducer driven by Galfenol is designed and fabricated to study its characteristics in transducer application. Finite element method(FEM) is utilized to analyze the vibration modes and optimize the structure parameters of the transducer. The vibration modes in air and displacement of the front mass driven by different currents are measured by laser vibrometer. The measured modes are in well agreement with the simulation results. The maximum vibration displacement of the front mass is 93 μm at the resonant frequency of 913 Hz. Measurement results show that bender disk transducer driven by Galfenol can be used to achieve large displacement and Galfenol is a promising magnetostrictive material to drive transducer. |
| DOI：10.11684/j.issn.1000-310X.2016.06.001 |
| 中文关键词: 铁镓合金，弯曲圆盘换能器，弯曲振动，无偏磁场 |
| 英文关键词: Galfenol, Bender disk transducer, Flexural vibrating, Without biased magnetic field |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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