A Boundary Integral Formulation on Unstructured Dual Grids for Eddy-Current Analysis in Thin Shields

Dipt. di Ingegneria Elettrica, Padova Univ.
IEEE Transactions on Magnetics (Impact Factor: 1.39). 05/2007; 43(4):1173 - 1176. DOI: 10.1109/TMAG.2006.890948
Source: IEEE Xplore


A 3-D boundary integral method (3-D BIM) capable of analyzing eddy currents in thin shields is presented. This novel approach is formulated in terms of loop currents in order to implicitly fulfill the div-free condition for quasi-magnetostatic problems. Using nonorthogonal dual grids unknowns are defined on nodes, resulting in a very efficient formulation with limited memory requirements. The proposed method is tested on an axisymmetric model showing a good agreement with the analytical solution. 3-D BIM is then applied to analyze a real case of low-frequency magnetic shielding

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Available from: Piergiorgio Alotto, Sep 26, 2012
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    • "where R and M are the classical resistance mass matrix and the magnetic matrix [2], respectively. This solution is more convenient than the one proposed in [5] since the system is symmetric. "
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