NX Nastran DMAP Programmer's Guide - Kxcad.net

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CYCLIC3
Forms cyclic matrices
KGTH Output-integer-no default. Set to -1 if all harmonic IDs (in analysis set)
have been processed.
REACT Output-integer-no default. Set to -1 if no support degrees-of- freedom;
+1 if support degrees of freedom exist; for k > 2, it will always have
value of -1.
Remarks:
1. For buckling analysis, then the negative of the differential stiffness, -KDAA, may
be specified in place of MAA.
ADD KDAA,/KDAAM/-1. $
CYCLIC3 CYCD,TKVAL,KAA,KDAAM,,/
KKK,MKK,,,GC,GS,PVEC/
HINDEX/NSEG/S,N,NOKVAL/S,N,KGTH/S,N,REACT $
2. CYCLIC3 can also accommodate the p-set:
CYCLIC3 CYCD,KVAL,KDD,MDD,BDD,K4DD/
KKK,MKK,BKK,K4KK,GC,GS,PVEC/
HINDEX/NSEG/S,N,NOKVAL/S,N,KGTH/S,N,REACT $
3. PVEC is formed in normal modes and static analysis if support degrees-offreedom
are specified on the CYCSUP Bulk Data entry. PVEC is used to partition
the solution set (cyclic degrees-of-freedom) into l-set and r-set degrees-of-
freedom for the zero-th and first harmonics. PVEC will have rows equal to the
number of columns in the GC matrix.