Title :
Adaptive time-stepping in nonlinear transient electromagnetic finite element analysis
Author :
Brauer, John R. ; Lee, Sang H. ; Chen, Q.M.
Author_Institution :
Ansoft Corp., Milwaukee, WI, USA
fDate :
3/1/1997 12:00:00 AM
Abstract :
Time-step size is automatically adapted to enable efficient convergence in nonlinear transient electromagnetic finite element computations. The adaptive time-stepping takes into account both induced eddy currents and the nonlinear reluctance matrix due to saturable B-H curves. The new algorithm is shown to obtain results that agree with fixed time-step methods, but with savings in computing time of up to 90%
Keywords :
adaptive systems; convergence of numerical methods; eddy currents; electromagnetic induction; finite element analysis; matrix algebra; transient analysis; adaptive time-stepping; computing time savings; convergence; fixed time-step methods; induced eddy currents; nonlinear reluctance matrix; nonlinear transient EM finite element analysis; saturable B-H curves; Convergence; Eddy currents; Electromagnetic analysis; Electromagnetic devices; Electromagnetic transients; Finite element methods; Gold; Nonlinear equations; Software algorithms; Transient analysis;
Journal_Title :
Magnetics, IEEE Transactions on
