The first stop criterion is the maximum number of optimization iterations that is 50 per
default. When this maximum number of optimization iterations is reached, the optimization
algorithm always stops independent of the values of the other convergence criteria. The
allowed maximum number of optimization iterations can be increased or decreased by the
user.
This is defined by the parameter ITER_MAX of the STOP command.
STOP>
ID_NAME = global_stop
ITER_MAX = 55
END_
where ITER_MAX is increased to 55.
Important:
The global stop criterion is defined using a
STOP command
whereas the convergence criteria are defined in the optimization settings
(OPT_PARAM command).
The global stop criterion leads to a stop of the optimization - independent of a complete convergence of the result (in particular with a small
number of iterations this cannot be achieved).
If there are stress design responses or nonlinear materials present in the optimization, the
maximum number of iterations will be automatically set to 80 per default.