NX Nastran DMAP Programmer's Guide - Kxcad.net

1050
GNFM
Computes element forces due to large displacements
GNFM Computes element forces due to large displacements
Computes the element forces due to large displacements and optionally computes the
elemental stiffness matrices associated with incremental deflections.
Format:
GNFM KELM,KDICT,KDELM,KDDICT,EST,CSTM,UG,BGPDT/
FG,KELM1,KDICT1/
SKPMTX/LUSET/NSKIP $
Input Data Blocks:
KELM Table of element matrices for stiffness.
KDICT KELM dictionary table.
KDELM Table of element matrices for differential stiffness.
KDDICT KDELM dictionary table.
EST Element summary table.
CSTM Table of coordinate system transformation matrices.
UG Displacement matrix in g-set.
BGPDT Basic grid point definition table.
Output Data Blocks:
FG Element forces due to large displacements
KELM1 Table of element matrices for incremental stiffness.
KDICT1 KELM1 dictionary table.
Parameters:
SKPMTX Input-integer-default=0. If SKPMTX0, then KELM1 and KDICT1
will be generated.
LUSET Input-integer-default=0. The number of degrees-of-freedom in the
g-set.
NSKIP Input-integer-default=0. Loop counter in old geometric nonlinear
analysis (SOL 4).
Remarks:
1. FG cannot be purged.
2. KELM1 and KDICT1 may be purged if SKPMTX0.