运动载体涡流磁场数值计算与特性分析  

Numerical calculation and characteristic analysis of eddy current magnetic field of moving carrier

作　　者：张宁[1] 邵松世[2] 叶慧娟[1] 

机构地区：[1]海军工程大学兵器工程系,武汉430033 [2]海军工程大学科研部,武汉430033

出　　处：《海军工程大学学报》2015年第2期69-73,共5页Journal of Naval University of Engineering

基　　金：湖北省自然科学基金资助项目(2012FFB06903)

摘　　要：为提高运动载体涡流磁干扰建模与补偿的精度,对载体运动引起的涡流磁场的产生机理和分布特性进行分析研究。首先,对涡流磁场的产生机理进行了溯源分析;然后,采用有限元法对涡流磁场进行数值计算研究。考虑到计算空间包含结构的磁导率单一问题,采用了有限元节点法矢量磁位计算方式,并针对舱体壁计算单元,考虑了耦合积分电势自由度,同时考虑到磁场周期变化,采用了瞬态有限元计算方式;最后,通过数值计算分析,揭示了运动载体涡流磁场与外磁场变化频率的关系,并分析了涡流磁场沿径向和轴向的空间分布特性和传播规律,为运动载体涡流磁场干扰的高精度建模与补偿奠定了基础。To increase the precision of modeling and compensation for the eddy current magnetic inter- ference of a moving carrier, this paper makes an analysis of the generating mechanism and distribution characteristics of the eddy current magnetic field due to the motion of the carrier. First, the source of its generating mechanism is analyzed and then the finite element method is used for numerical calculation. For the single permeability of spatial structure and the cabin wall characteristics, the transient finite-element node method for magnetic vector potential calculation is adopted and the coupled inte- gral potential freedom degree is taken into account respectively. The numerical calculation reveals the relationship between the eddy current magnetic field and the external magnetic field in the frequency of change, and an analysis is given to the axial and radial spatial distribution characteristics, and propa- gation of the eddy current magnetic field radial is analyzed. Both calculation and analysis results may lay the foundation for the high-precision modeling and compensation of the eddy current magnetic field of the moving carrier.

关 键 词：涡流磁场 有限元分析 空间分布 

分 类 号：O441.2[理学—电磁学]