摘要
超磁致伸缩材料(GMM)发音振子是骨传导听觉装置的核心部件,该文提出了一种弓张式的GMM发音振子结构,并利用ANSYS软件对其内部磁场径向分布进行了有限元仿真和分析。结果表明,振子中间部分磁场强度和均匀性最好,弓张结构磁导率的变化对两端磁场分布的均匀性影响较大,为满足磁场强度和均匀性要求,弓张结构应优先选用镍铁合金材料。
The giant magnetostrictive material（GMM） pronunciation vibrator is a core component of a bone-con- duction hearing device. A GMM pronunciation vibrator with bow-type structure was proposed in this paper,the in- ternal radial magnetic field distribution was simulated and analyzed using ANSYS. The simulation results indicate that the magnetic field strength and uniformity are best in the middle part. The uniformity of the magnetic field dis- tribution is greatly affected by the bow-type structure permeability in both ends. In order to meet the requirements for magnetic field strength and uniformity, the nickel iron alloy is preferred for bow-type structure.
出处
《压电与声光》
CSCD
北大核心
2015年第4期672-675,共4页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(51275525)
