invopt

AnalysisOptions.invopt(option='', **kwargs)

Enables or disables inverse solving for the current load step.

Mechanical APDL Command: INVOPT

Parameters:

optionstr

Enables or disables inverse solving for a load step:

• ON - Enable.

• OFF - Disable and revert to forward solving (default).

Notes

Option = ON is valid only at the first load step of a static analysis. Large-deflection effects must be enabled ( nlgeom,ON). The unsymmetric solver ( nropt,UNSYM) is required and the program selects it automatically.

After issuing invopt,ON, inverse solving remains in effect until invopt,OFF is issued. The solution then reverts to traditional forward solving (default).

This command cannot be issued during a restart. Option can only be changed between load steps.

For more information, see Nonlinear Static Analysis with Inverse Solving