Specify the magnetic solution sequence and the number of substeps as options for the first load step. This will yield an approximate air-only solution. To do so, use either of the following menu paths or commands:

Specify that you do not want to save results, using one of the following:

Write the load data to a load step file, via one of these methods:

Specify load step options for the second load step (which produces the final solution). This time, set the VALUE field to 3 on the MAGOPT command.

Set the convergence criteria using one of the following:

Set the full Newton-Raphson option with adaptive descent. To do so, use either method shown below:

Store the converged solution, using the OUTRES command or its GUI equivalent.

Use the LSWRITE command or the Write LS File menu option to write load data to a load step, as discussed in step 2 above.

Start calculating the solution by using one of the following:

Once you have solved the model, review the results as described for the RSP method.

An example command sequence for a nonlinear 3D DSP analysis follows:

/solu
magopt,2            ! Partial solution in air
outres,all,none     ! Do not store results
solve               ! Solve the analysis
magopt,3            ! Final solution
cnvtol,flux,,1e-3   ! Set convergence criteria
nropt,full,,on      ! Full Newton-Raphson with adaptive descent
outres,all,last     ! Store final results
solve