摘要
基于计算电磁学仿真方法,研究了复杂铁磁性腔体结构退磁过程中的磁场时变特性。通过建立复杂铁磁性腔体结构和磁场发生线圈的仿真模型,分析和解释了影响磁场时变特性的主要因素,包括涡流效应、磁滞效应、复杂铁磁性腔体结构的材料属性以及结构缝隙连接等。探讨了典型位置点的磁场幅值及其内部磁场随时间的变化情况,模拟了涡流在动态退磁过程中的演化运动。研究发现,上述因素在退磁过程中对复杂铁磁性腔体结构内部磁场产生显著影响,而且其影响相互交织,形成了复杂的时变特性。通过理论分析和数值模拟,揭示了这些影响的机制和规律,研究结果为优化退磁过程、提高退磁效果以及设备级的磁场防护指标和防护设计提供了重要参考。
The characteristics of time-varying magnetic fields during the demagnetization process of complex ferromagnetic cavity structures were studied based on computational electromagnetic simulation.By establishing a simulation model of the complex ferromagnetic cavity structure and the magnetic field generation coil,the main factors affecting the characteristics of time-varying magnetic fields were analyzed and explained,including eddy current effects,hysteresis effects,material properties of the complex ferromagnetic cavity structure,and structural gap connections.The magnetic field amplitude at typical locations was investigated,and the temporal variation of the internal magnetic field was analyzed.Additionally,the evolution motion of eddy currents during the dynamic demagnetization process was simulated.It was found that the aforementioned factors significantly affect the internal magnetic field of the complex ferromagnetic cavity structure during the demagnetization process,and their influences intertwine,resulting in complex time-varying characteristics.Through theoretical analysis and numerical simulation,the mechanisms and rules of these influences were revealed.The research findings provide important references for optimizing the demagnetization process,improving demagnetization effectiveness,and developing equipment-level magnetic field protection criteria and design.
作者
郭涛
于海涛
朱学伟
靳阿桥
解社娟
GUO Tao;YU Haitao;ZHU Xuewei;JIN Aqiao;XIE Shejuan(Xi'an Jiaotong University,Xi'an 710049,China;Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China;China Academy of Launch Vehicle Technology,Beijing 100076,China;Beijing University of Chemical Technology,Beijing 100029,China)
出处
《宇航总体技术》
2024年第6期50-57,共8页
Astronautical Systems Engineering Technology
基金
国家自然科学基金(62271033)
北京市自然科学基金(8202036)。
关键词
铁磁性腔体
退磁
涡流效应
磁滞效应
磁场分布
Ferromagnetic cavity
Demagnetization
Eddy current effect
Hysteresis effect
Magnetic field distribution
