Coupled BEM-FEM methods for 3D field calculations with iron saturation [article]

S Kurz, J Fetzer, W M Rucker
1999
If electromagnetic problems are solved by finite elements, the computation for problems involving infinite space and/or complicated coil geometries causes difficulties. One possibility to treat such problems is the coupling of finite elements (FEM) and boundary elements (BEM), referred to as BEM-FEM coupling. The physical problem is decomposed into a BEM part, which represents the surrounding space as well as prescribed exciting currents, and a FEM part, which contains the magnetic media. In
more » ... gnetic media. In this paper, the BEM-FEM coupling for magnetostatic problems is derived in detail. For the treatment of nonlinear media the ¢ ¡ ¤ £ ¦ ¥ -iteration is presented. As an application example the computation of iron induced effects in superconducting dipole magnets is considered.
doi:10.5170/cern-1999-001.47 fatcat:ut6r4iahrjhfnkjshc2lqygb4a