Magnetic circuit design and vibration performance test of a giant magnetostrictive transducer
LIU Qiang1,QIN Huibin2,HE Xiping1,WANG Yifan1
1.School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China;
2.Shanxi Key Laboratory of Advanced Manufacturing Technology, North University of China, Taiyuan 030051, China
Abstract:A giant magnetostrictive transducer was developed. To improve the magnetic circuit and the vibration performance of the transducer, the finite element method was used to simulate and calculate the transducer, focusing on the influence of the magnetic conductive block and the magnetic cylinder on the performance of the transducer, and the temperature rise of the transducer during operation was simulated and calculated. The impedance and amplitude of the developed transducer were measured. The results show that the magnetic field strength of Terfenol-D rod increased and then decreased, the magnetic field uniformity decreased and then remains unchanged, and the output amplitude increased and then decreased slightly with the increase of the thickness of the magnetic cylinder. As the thickness of the magnetic conductive block increased, the magnetic field strength and magnetic field uniformity of the Terfenol-D rod increased, and the output amplitude also increased. Compared with the transducer without magnetic cylinder, the transducer with magnetic cylinder has larger electromechanical conversion coefficient and output amplitude, but the temperature was higher after working the same time. The research in this paper provides a simulation calculation method to optimize the magnetic circuit structure of the giant magnetostrictive transducer and improve its vibration performance.
刘强1,秦慧斌2,贺西平1,王一凡1. 超磁致伸缩换能器磁路设计及振动性能测试[J]. 振动与冲击, 2023, 42(24): 228-236.
LIU Qiang1,QIN Huibin2,HE Xiping1,WANG Yifan1. Magnetic circuit design and vibration performance test of a giant magnetostrictive transducer. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(24): 228-236.
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