SOLUTION OF INDUCTION-HEATING PROBLEMS INVOLVING MEDIA WITH HYSTERESIS

Induction heating is widely used in various industrial processes. In t his paper, the Crank-Nicolson finite-difference approach is employed i n the analysis of induction heating problems involving relatively long rods that exhibit hysteresis. The analysis is, thus, reduced to solvi ng a 2D space-time electromagnetic field problem and exact B-H charact eristics of rods are taken into account by utilizing Preisach-type mod els of hysteresis. A detailed numerical example is given in the paper and some sample simulation results covering different excitation frequ encies and amplitudes are reported. (C) 1996 American Institute of Phy sics.