Efficiency evaluation via finite element method of 3D magnetostatic shields using different types of magnetic potentials

The efficiency of spherical and cylindrical magnetic shields placed in a magnetostatic field are modeled numerically, with FEM, taking into account: a) type of magnetic potential: scalar or vector; b) for certain types of shields comparisons with the measured values will be performed; c) comparison between analytical values and numerical values. It is a beginning of a study which will continue with the study shielding efficiency at low and high frequencies respectively.