Transient finite element analysis computational reduction technique

The finite element analysis of a large, complex region under transient magnetic field conditions often requires significant computational time; the solution of realistic problems may be rendered impractical by this computational burden. Often, however, the entire solution of the region being modelled is not of interest. For example, the area of interest of a system composed of magnetic material and air gaps subject to magnetic field transients is often limited to the conducting regions which support eddy currents. This paper presents a methodology which significantly reduces the computational time required for a transient finite element analysis of such problems by solving for only the pertinent regions with no effect on result accuracy