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Uniformity-based Magnetic Field and Improvement of Conversion Efficiency for Rotary Ultrasonic Machining Applications

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Title Uniformity-based Magnetic Field and Improvement of Conversion Efficiency for Rotary Ultrasonic Machining Applications
 
Creator Yang, Rui
Hao, Zhenxing
Hu, Xiaojing
Chen, Yunshuai
 
Subject Magnetostrictive transducer
Energy conversion
Magnetic field uniformity
COMSOL simulation
 
Description 961-970
A giant magnetostrictive transducer is a highly integrated device that facilitates the conversion of magnetic energy into
mechanical energy, enabling the generation of motion or force during actuation. However, the energy efficiency of giant
magnetostrictive materials (GMM) is hindered by several factors, resulting inless-than-optimal performance. To improve
energy conversion efficiency, a magnetic circuit control strategy for optimizing the transducer is proposed, focusing on
increasing magnetic flux density and enhancing magnetic field uniformity. Theoretical derivations demonstrate the positive
correlation between magnetic circuit parameters, flux density, and uniformity. The impact of various magnetic circuit
parameters on magnetic field strength is then analyzed using COMSOL software, which identifies optimal parameters for the
stacked structure, resulting in a 9% improvement in magnetic field uniformity. Impedance analysis experimentally validates
these results. The optimized stacked magnetic circuit for GMM shows a larger impedance circle diameter, an improved
mechanical quality factor, and 95% magnetic field uniformity. By appropriately arranging the bias magnetic field and
fine-tuning the magnetic circuit structure, magnetic flux density and uniformity along the GMM rod's central axis are enhanced,
reluctance is reduced, and magnetic flux leakage is minimized in the closed magnetic circuit, which ensures high energy
conversion efficiency in high-power ultrasonic vibration systems. The study provides essential guidance for optimizing system
design and offers valuable insights to improve system efficiency and performance significantly.
 
Date 2024-11-01T10:58:37Z
2024-11-01T10:58:37Z
2024-11
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/64810
https://doi.org/10.56042/ijpap.v62i11.6491
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.62(11) [November 2024]