WU Jiaqi,DUAN Aocheng,WANG Qinglan,et al.The magnetic force on metal under the multi-frequency AC magnetic field[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2025,64(06):62-66.
WU Jiaqi,DUAN Aocheng,WANG Qinglan,et al.The magnetic force on metal under the multi-frequency AC magnetic field[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2025,64(06):62-66. DOI: 10.13471/j.cnki.acta.snus.ZR20250095.
The magnetic force on metal under the multi-frequency AC magnetic field
In AC magnetic field,eddy current is generated in the metal.Due to the coupling of eddy currents and the AC magnetic field,the magnetic induced force is produced on the metal,which is significant in specific research fields such as gravitational wave detection.When the magnetic field frequency is single,the magnetic force generated is easy to analyze and calculate.However,when the magnetic field contains multiple frequency components,the magnetic force acting on the metal becomes complex.In this study,we investigate the composition of magnetic forces induced by eddy current under dual-frequency magnetic field through combination of theoretical analysis and simulation calculations and reveal the down-converting effect of the magnetic forces,which is critical for precision measurement tasks.Finally,we propose that employing AC magnetic susceptibility to calculate magnetic force can significantly reduce computation time while maintaining analytical accuracy,thereby establishing a rapid and reliable method for subsequent research on metal magnetic force.
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MOE Key Laboratory of TianQin Mission /Frontiers Science Center for TianQin / CNSA Research Center for Gravitational Waves / TianQin Research Center for Gravitational Physics, Sun Yat-sen University
Shiyan Key Laboratory of Quantum Information and Precision OpticsSchool of Optoelectronic Engineering / Hubei University of Automotive Technology