NX Nastran DMAP Programmer's Guide - Kxcad.net

NLTRD
Computes transient nonlinear analysis solution matrices and tables
NLTRD Computes transient nonlinear analysis solution matrices and tables
Computes transient nonlinear analysis solution matrices and tables. Applicable to
dynamic structural analysis only.
Format:
NLTRD CASECC,MESTNL,PDT,YS,KRDD,
ELDATA,KELMNL,LAM1DD,GM,MPT,
DIT,UAM1DD,DLT1,CSTM,BGPDT,
SIL,USETD,AM2,AM3,NLFT,
KSGG,DITID/
ULNT,IFG,ESTNLH,IFD,OESNL1,
PNL,TEL/
BETA/S,N,CONV/S,N,STIME/S,N,NEWP/S,N,NEWK/
S,N,OLDDT/S,N,NSTEP/LGDISP/S,N,CONSEC/S,N,ITERID/
S,N,MU/S,N,KTIME/S,N,LASTUPD/S,N,NOGONL/
S,N,NOTIME/MAXLP/UNUSED17/UNUSE18/UNUSE19/
TABS/LANGLE $
Input Data Blocks:
CASECC Table of Case Control command images.
MESTNL Nonlinear element summary table at current step.
PDT Dynamic load vectors for transient analysis in the d-set.
YS Matrix of enforced displacements or temperatures.
KRDD Combined linear and material nonlinear stiffness matrix in the d-set.
ELDATA Table of combined nonlinear information data.
KELMNL Table of element matrices for stiffness for nonlinear elements.
LAM1DD Lower triangular factor of the dynamic tangential matrix in the d-set.
GM Multipoint constraint transformation matrix, m-set by n-set.
MPT Table of Bulk Data entry images related to material properties.
DIT Table of TABLEij Bulk Data entry images.
UAM1DD Upper triangular factor of the dynamic tangential matrix in the d-set.
DLT1 Table of dynamic loads updated for nonlinear analysis.
CSTM Table of coordinate system transformation matrices.
BGPDT Basic grid point definition table.
SIL Scalar index list.
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