jomocas
New member
- May 13, 2014
- 15
Hello all,
So I am trying to do a Buckling analysis to a condensed Model and I get the Fatal Message 9050 (SEKRRS):
GRID POINT ID DEGREE OF FREEDOM MATRIX/FACTOR DIAGONAL RATIO MATRIX DIAGONAL
57004426 T1 -8.79996E+08 2.05308E+09
57004426 T2 2.05269E+08 8.17563E+08
57004426 T3 5.24272E+07 5.46972E+08
^^^
^^^ USER FATAL MESSAGE 9050 (SEKRRS)
^^^ RUN TERMINATED DUE TO EXCESSIVE PIVOT RATIOS IN MATRIX KLL.
^^^ USER ACTION: CONSTRAIN MECHANISMS WITH SPCI OR SUPORTI ENTRIES OR SPECIFY PARAM,BAILOUT,-1 TO
CONTINUE THE RUN WITH MECHANISMS.
So I get a negative Matrix/Factor Diagonal Ratio and this won't allow Nastran to continue. Does anybody know why I get a negative Matrix/Factor Diagonal Ratio for SOL 105 but not for SOL 101? The model is exactly the same and I looked at this node and it looks absolutely normal. All the model are 3D CHEXA elements by the way.
Thanks a lot,
So I am trying to do a Buckling analysis to a condensed Model and I get the Fatal Message 9050 (SEKRRS):
GRID POINT ID DEGREE OF FREEDOM MATRIX/FACTOR DIAGONAL RATIO MATRIX DIAGONAL
57004426 T1 -8.79996E+08 2.05308E+09
57004426 T2 2.05269E+08 8.17563E+08
57004426 T3 5.24272E+07 5.46972E+08
^^^
^^^ USER FATAL MESSAGE 9050 (SEKRRS)
^^^ RUN TERMINATED DUE TO EXCESSIVE PIVOT RATIOS IN MATRIX KLL.
^^^ USER ACTION: CONSTRAIN MECHANISMS WITH SPCI OR SUPORTI ENTRIES OR SPECIFY PARAM,BAILOUT,-1 TO
CONTINUE THE RUN WITH MECHANISMS.
So I get a negative Matrix/Factor Diagonal Ratio and this won't allow Nastran to continue. Does anybody know why I get a negative Matrix/Factor Diagonal Ratio for SOL 105 but not for SOL 101? The model is exactly the same and I looked at this node and it looks absolutely normal. All the model are 3D CHEXA elements by the way.
Thanks a lot,