NX Nastran DMAP Programmer's Guide - Kxcad.net

MODTRK
MODTRK
Reorders eigenvalues and eigenvectors to be consistent with previous design cycle
Compares the mode set of the current design cycle with those of the previous design
cycle, identifies or tracks these modes, and reorders the eigenvalues and eigenvectors
to be consistent with the previous design cycle.
Format:
Input Data Blocks:
Output Data Blocks:
Reorders eigenvalues and eigenvectors to be consistent with previous
design cycle
MODTRK CASECC,EDOM,R1TABR,LAMA,MGG,MAA,PHG,PHA,PHGREF,
PHAREF/MTRAK,LAMA1,PHG1,PHA1,PHGREF1,PHAREF1/
DESCYCLE/S,N,NOTRACK $
CASECC Table of Case Control command images.
EDOM Table of Bulk Data entries related to design sensitivity and
optimization.
R1TABR Table of retained first level (direct) (DRESP1 Bulk Data entry)
attributes.
LAMA Normal modes eigenvalue summary table.
MGG Mass matrix in g-size.
MAA Mass matrix in a-set.
PHG Normal modes eigenvector matrix in the g-set.
PHA Normal modes eigenvector matrix in the a-set.
PHGREF Designed normal modes eigenvector matrix in the g-set from the prior
design cycle output of MODTRK.
PHAREF Designed normal modes eigenvector matrix in the a-set from the prior
design cycle output of MODTRK.
MTRAK Table of updated DRESP1 Bulk Data entry images corresponding to the
new mode numbering.
LAMA1 Normal modes eigenvalue summary table updated for mode tracking.
PHG1 Normal modes eigenvector matrix in the g-set updated for mode
tracking.
PHA1 Normal modes eigenvector matrix in the a-set updated for mode
tracking.
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