soloption

NonlinearOptions.soloption(option='', type_='', value='', **kwargs)

Specifies solution transition options.

Mechanical APDL Command: SOLOPTION

Parameters:

optionstr

Transition option:

• STOT - Use criterion for transitioning from a static solution to a transient dynamic solution.

• TTOS - Use criterion for transitioning from a transient dynamic solution to a static solution.

type_str

Additional input; varies depending on the Option value. See table below.

valuestr

Additional input; varies depending on the Option and Type values. See table below.

Notes

This command triggers an automatic transition from a static solution to a transient solution based on the specified criterion. The command is valid only in the solution processor ( slashsolu ) and must be defined either before the first solve command or during a restart analysis.

If soloption is issued with no arguments specified, the static solution will transition to a quasi-static transient solution if the static solution fails to converge (that is, soloption,STOT,CONV,QUASI).

soloption can be used in a restart even if the base analysis did not include the command. Therefore, a problem that failed in the static analysis can be restarted using this command so that it transitions to a transient solution and solves further. Material densities are required for the transient solution, but they must be defined during the static solution since the restart framework does not permit material density to be defined in the restart analysis.

For more information on using soloption, see Automatic Transition Between Static and Transient Solutions