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A novel hybrid FEM-BEM method for 3D eddy current field calculation using current density J
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作者 刘志珍 王衍章 +1 位作者 贾智平 孙英明 《Science China(Technological Sciences)》 SCIE EI CAS 2003年第1期41-48,共8页
This paper introduces a novel hybrid FEM-BEM method for calculating 3D eddy cur-rent field. In the eddy current region, the eddy current density J is solved by the finite element method (FEM) which is discretized by b... This paper introduces a novel hybrid FEM-BEM method for calculating 3D eddy cur-rent field. In the eddy current region, the eddy current density J is solved by the finite element method (FEM) which is discretized by brick finite element mesh, while in the eddy current free re-gion, the magnetic field intensity H is solved by the boundary element method (BEM) which is dis-cretized by rectangular boundary element mesh. Under the boundary conditions, an algebraic equation group is obtained that only includes J by eliminating H. This method has many advan-tages over traditional ones, such as fewer variables, more convenient coupling between the FEM and the BEM and wider application to multiply-connected regions. The calculated values of two models are in good agreement with experimental results. This shows the validity of our method. 展开更多
关键词 conductor eddy current density magnetic field intensity 3D eddy current field FEM BEM coupling. To solve a large eddy current field is one of the most difficult problems in the numerical
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