为了高效应用Terfenol-D棒，本文研究了六种结构的棒。利用有限元软件对不同棒的磁芯损耗进行了仿真计算，并对其进行动力学仿真研究。加工了其中三种结构的棒，对棒的输出振幅进行了实验测试。结果表明：外径表面处，未处理棒的磁芯损耗最大；切片处理和切缝处理棒的磁芯损耗均减小，切片处理棒的磁芯损耗小于切缝处理。外径切缝棒整体的损耗最大；径向切割并粘接棒和切片处理棒整体的损耗小于未处理棒和外径切缝棒；两端切片棒整体的损耗大于切片并开槽棒和切片处理棒。未处理棒的谐振频率最高，机械品质因数最大，振幅最小；与未处理棒相比，切片处理棒或切缝处理棒的谐振频率和机械品质因数减小，振幅增大；切片处理棒的谐振频率和机械品质因数小于切缝处理棒，振幅远大于切缝处理棒。
Abstract
To efficiently apply Terfenol-D rods, six kinds of rods are studied in this paper. Finite element software was used to analyze and calculate the core loss of rods with different structures, and the dynamic simulation study was performed. Three types of rods were processed, and the output amplitude of the rods was tested experimentally. The results show that the core loss of untreated rod is the largest at the outer diameter surface; the core loss of slicing and slotting rods is reduced, and the core loss of slicing rods is less than that of slotting rods. The overall loss of the radial slitting rod is the largest; the overall loss of the radial cutting and bonding rod and the slicing treatment rod is less than that of the untreated rod and the radial slitting rod; the overall loss of the slicing rod at both ends is greater than that of the slicing and slotting rod and the slicing treatment rod. The untreated rod has the highest resonance frequency, the biggest mechanical quality factor, and the smallest amplitude; compared with untreated rods, the resonant frequency and mechanical quality factor of slicing rods or slitting rods are reduced, and the amplitude is increased; the resonant frequency and mechanical quality factor of the slicing treatment rod are smaller than that of the slitting treatment rod, and the amplitude is much larger than that of the slitting treatment rods.
关键词
Terfenol-D棒 /
磁芯损耗 /
输出振幅 /
有限元计算
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Key words
Terfenol-D rod /
core loss /
output amplitude /
finite element calculation
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