Numerical solution of eddy current problems in ferromagnetic bodies travelling in a transverse magnetic field

Eddy currents are investigated in a ferromagnetic bar travelling in a transverse magnetic eld. Such an open boundary eld problem is analysed by a hybrid approach based on Galerkin nite element formulation coupled with a separation of variables. A steady state is considered, introducing time-periodic boundary conditions. The resultant system of non-linear equations is solved by an iterative procedure based on Brouwer’s xed-point theorem. Numerical results are presented for a bar of circular crosssection made of cast steel or cast iron. Selected examples of the eld distribution and characteristics of eddy-current power losses are enclosed in graphic form