Nastran error-Too many restarts
Nastran error-Too many restarts
(OP)
Hi,
I am getting the nastran error message
"SYSTEM FATAL MESSAGE 6724 (SB11RD)
TOO MANY RESTARTS."
I have no idea on how to continue,Please help.
Bharat
I am getting the nastran error message
"SYSTEM FATAL MESSAGE 6724 (SB11RD)
TOO MANY RESTARTS."
I have no idea on how to continue,Please help.
Bharat





RE: Nastran error-Too many restarts
The iterative solver may fail with the message:
USER INFORMATION MESSAGE 6447 (SITDR2)
ITERATIVE SOLVER DIAGNOSTIC OUTPUT
EPS : 1.00000E-06
BICWELL PRECONDITIONING
USER FATAL MESSAGE 6724 (SB1RM)
TOO MANY RESTARTS.
USER ACTION: INCREASE IPAD VALUE ON BULK DATA CARD ITER.
0FATAL ERROR
Avoidance: This message may be caused by a negative term on the factor
diagonal.. A potential cause for getting a negative diag. term is that the
matrix is ill-conditioned. The error may be avoided by increasing the IPAD
parameter on the ITER entry. Another possibility is- to use BICILL instead of
BICWELL.
Hope it helps