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Nastran error-Too many restarts
- Thread starter Bharathsf
- Start date
29311 Iterative Solver - SITDR2, SOLVIT, ITER - UFM 6724 (SB1RM)
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
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
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