Simulation Notes Europe, Volume 31(2), June 2021

Orthotropic Non-hysteretic Permeability Model as a Lookup-table for FEA

Simulation Notes Europe SNE 31(2), 2021, 65-72
DOI: 10.11128/


Within this paper, we present an appropriate approach to prepare the data of orthotropic nonlinear soft magnetic materials for use in 1nite element analyses. Based on the co-energy density, an elliptic model for the interpolation between the principal directions is derived and extended to laminated materials. Instead of adapting the FE-code to incorporate the fundamental equations, a workflow is proposed to generate a lookup-table of the anisotropic nonlinear permeability which can be easily integrated in FE-programs like COMSOL Multiphysics. The modelled behaviour is shown for typical material classes and the lamination model is numerically validated.