Implementation of the preisach DOK magnetic hysteresis model in a commercial finite element package

The very accurate magnetic hysteresis representation available from Preisac h-based models is not currently offered in commercial finite element (FE) p ackages. The major obstacle to using more accurate magnetization models is that they can cause convergence problems in the FE solution cycle. A method has been developed to integrate the Fast DOK (Della Torre-Oti-Kadar) model , a Preisach based magnetization model, into the ANSYS FE program. Small-sc ale tests show that the FE solutions match expected values and that the use of the Preisach model does not effect the convergence of the FE solution.