在用avl做模态缩减时遇到了如下问题
P R O B L E M S I Z E
NUMBER OF ELEMENTS IS 761201
NUMBER OF NODES IS 161880
NUMBER OF NODES DEFINED BY THE USER 161871
NUMBER OF INTERNAL NODES GENERATED BY THE PROGRAM 9
TOTAL NUMBER OF VARIABLES IN THE MODEL 485778
(DEGREES OF FREEDOM PLUS MAX NO. OF ANY LAGRANGE MULTIPLIER
VARIABLES. INCLUDE *PRINT,SOLVE=YES TO GET THE ACTUAL NUMBER.)
ERROR: THE PROBLEM IS TOO LARGE TO RUN WITH Abaqus. TYPICALLY THIS IS
CAUSED BY THE EXISTENCE OF A VERY LARGE ELEMENT SUCH AS A
SUBSTRUCTURE WITH A LARGE NUMBER OF RETAINED DOF, A LARGE CAVITY IN
A CAVITY RADIATION PROBLEM, OR SURFACE-BASED COUPLING WITH A LARGE
NUMBER OF COUPLING NODES.