NLAD-GPAD cannot be initiated from within Mechanical APDL. The procedure is driven from the Ansys Mechanical application Geometry Based Adaptivity (Geometry Based Adaptivity in the Mechanical User's Guide).
You can use command snippets to apply additional analysis parameters and characteristics available in Mechanical APDL.
When using NLAD-GPAD, the program enables the nonlinear solution algorithm automatically. You can also specify the full (NROPT,FULL) or unsymmetric (NROPT,UNSYM) Newton-Raphson solver option as required.
To ensure that at least one remeshing occurs during the analysis, you can set the
number of substeps as necessary (directly via NSUBST or indirectly
via DELTIM). Obtain guidance for setting the number of substeps via
the NLADAPTIVE,,ON,VAL1 value specifying
the remeshing frequency.
For linear elastic problems, it is common practice to apply the load as a single step in the first substep of the load step (KBC,1) rather than ramping it over the load step (KBC,0). In such cases, the smallest possible number of substeps is 2, ensuring at least one mesh refinement:
