Dual Formulations for Accurate Thin Shell Models in a Finite Element Subproblem Method

A subproblem finite with dual finite element magnetostatic
and magnetodynamic formulations is developed for
correcting the inaccuracies near edges and corners coming from
thin shell models, that replace thin volume regions by surfaces.
The surface-to-volume correction problem is defined as one of the
multiple subproblems applied to a complete problem, considering
successive additions of inductors and magnetic or conducting
regions, some of these being thin regions. Each SP requires a
proper adapted mesh of its regions, which facilitates meshing
and increases computational e ciency.