NX Nastran DMAP Programmer's Guide - Kxcad.net

Parameters:
NLTRD2
Computes transient nonlinear analysis solution matrices and tables
KRATIO Input/output-complex-default=(1.,0.). Stiffness ratio to be used for
time step adjustment.
CONV Input/output-integer-default=1. Nonlinear analysis convergence flag.
On input:
0 Initialization
On output:
-1 Convergence has not been achieved.
1 Convergence has been achieved.
STIME Input/output-real-default=0.0. On initial input, starting time step and
on output, accumulated time used for restarts.
NEWP Output-integer-default=1. New subcase flag.
-1 Current subcase has not been completed.
1 Current subcase has been completed.
NEWK Input/output-integer-default=1. Stiffness update flag.
-1 Do not update stiffness.
>0 Update stiffness and represents the number of consecutive time
steps which have shown divergence. If this number reaches 5, the
solution process is terminated.
OLDDT Input/output-real-default=0.0. Time step increment used in the
previous iteration or time step to be used after the matrix update or
subcase switch.
NSTEP Input/output-integer-default=0. Current time step position for
subcase, set to 0 at the beginning of the subcase.
LGDISP Input-integer-no default. Large displacement and follower force flag.
-1 No large displacement and follower force effects will be
considered.
1 Large displacement and follower force effects will be considered.
2 Only large displacement effects will be considered.
125