NX Nastran DMAP Programmer's Guide - Kxcad.net

LANCZOS Performs real eigenvalue analysis
LANCZOS
Performs real eigenvalue analysis
Performs real eigenvalue analysis on real symmetric mass and stiffness matrices using
the Lanczos method for the eigensolution and Lagrange Multiplier techniques for
constraint processing. Also designed and implemented to take advantage of
distributed memory parallelism (DMP) or networked computers.
Format:
LANCZOS KGG,MGG,RMG,CASECC,USET,EQEXIN,SIL,DYNAMIC,INVEC/
PHG,MI,LAMA,LAMMAT,QG,QMG/
FORMAT/NEIGV/NSKIP/FLUID/EPSORTH/
SID/F1/F2/NDES/MSGLVL/
MAXSET/SHFSCL/NORM/EPSNO/NOQG/
NOQMG $
Input Data Blocks:
KGG Stiffness matrix in g-set.
MGG Mass matrix in g-set.
RMG Multipoint constraint equation matrix.
CASECC Table of Case Control command images.
USET Degree-of-freedom set membership table for g-set.
CSTM Table of coordinate system transformation matrices.
CASECC Table of Case Control command images.
EQEXIN Equivalence table between external and internal grid/scalar
identification numbers.
SIL Scalar index list.
DYNAMIC Table of Bulk Data entry images related to dynamics.
INVEC Starting vector(s).
Output Data Blocks:
PHG Normal modes eigenvector matrix in the g-set.
LAMA Normal modes eigenvalue summary table.
LAMMAT Diagonal matrix containing eigenvalues on the diagonal.
MI Modal mass matrix.
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