This example shows how to simulate nonlinear material properties within the magnetostatic solver. The structure is driven by a current coil, consisting of 2500 turns, each carrying a current of 10 A. The dimensions of the model are fully parameterized and thus can be changed easily to perform different calculations.
The pot magnet consists of three cylinders with nonlinear material properties. A nonlinear material is defined by its B-H curve, which can be entered manually in the nonlinear tab of the layer dialog. Alternatively it is possible to import data from an Ascii file. Due to the symmetry of the structure two symmetry planes are defined in order to reduce the calculation time.
The tetrahedral solver is started with default settings with adaptive mesh refinement. In principle it would also be possible to simulate the structure with the 2D magnetostatic solver.
After the calculation has finished the computed energy and co-energy as well as the flux linkage is available in the Navigation Tree. One can view the mu distribution inside the nonlinear material by selecting the "2D/3D Results/Material" entry in the navigation tree and switching to "inside" in the plot properties. Furthermore, you can activate "Draw 3D fields on 2D plane" to visualize the material distribution and other field quantities on a cutting plane.