中山大学学报（自然科学版）（中英文）2025，Vol.64Issue(6)：62-66,5.DOI:10.13471/j.cnki.acta.snus.ZR20250095
金属在多频交变磁场中的受力
The magnetic force on metal under the multi-frequency AC magnetic field
摘要
Abstract
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.关键词
磁感应力/交变磁场/涡流/下转换效应/交流磁化率Key words
magnetic force/AC magnetic field/eddy current/down-converting effect/AC magnetic susceptibility分类
数理科学引用本文复制引用
吴嘉淇,段奥成,王晴岚,徐家豪,刘祺..金属在多频交变磁场中的受力[J].中山大学学报（自然科学版）（中英文）,2025,64(6):62-66,5.基金项目
国家自然科学基金(12075325) （12075325）
