NX Nastran DMAP Programmer's Guide - Kxcad.net

1415
SOLVIT
Iterative solver
ADPTINDX Input-integer-default=0. P-version analysis adaptivity index. See
Remark 7.
NSKIP Input-integer-default=1. Record number of current subcase in
CASECC and used only if the SMETHOD command selects the ITER
Bulk Data entry which specifies values for the desired iteration
parameters. If NSKIP=-1 then CASECC is not required and the values
are taken from the module specification of the values.
MSGLVL Input-integer-default=0. Message level output. See “Option Selection”
on page 99 of the NX Nastran Numerical Methods User’s Guide.
0 minimal; i.e., UIM 6447 (default).
1 UIM 6447, convergence ratios, and residual norms
PREFONLY Input-integer-default=0. Preface execution only. If set to -1 then
SOLVIT is terminated after the preface information is computed
and printed.
ITSERR Output-integer-default=0. Iterative solver return code.
1 no convergence
2 insufficent memory
SEID Input-integer-default=0. Superelement identification number.
Remarks:
1. If ITSOPT = 3, the IPAD level is recommended to be 0, 1, or 2 (IEXT = 0) and
should be increased when IEXT is increased.
2. The amount of memory needed for ITSOPT = 3, 10, and 11 increases with the
increase of the parameters IPAD and IEXT.
3. For ITSOPT = 1 or 2, the input data blocks USET, KGG, and GM may be purged.
For ITSOPT = 3, USET must be specified. KGG and GM are necessary only if
IEXT = 2.
4. If the message “ *** USER FATAL MESSAGE 6288 (SITDRV): UNABLE TO
CONVERGE WITH ITERATIVE METHOD” is issued, then results will still be
printed but may be inaccurate.