FilterSIMULIA Tosca Structure uses a filter on the objective function sensitivities, the constraint sensitivities and the design variables to gain smooth results. The filter settings can be altered to either use another filter radius or to disable the filter. FILTER_RADIUS= <positive_real_value>, [ABS|REL]
The filter radius is used to filter the objective function sensitivities, the
constraint sensitivities and the design variables.
The second parameter indicates if the radius is given in ABSolute units (default)
or RELative i.e. in terms of the medium edge length.
Default value is 4 * medium_edge_length.
To disable filtering, use 0 or any negative value.
Using the FILTER_RADIUS=<value> parameter is equivalent to using the three parameters
OPT_PARAM
ID_NAME=MY_OPT_PARAM
OPTIMIZE=MY_OPTIMIZE
FILTER_SEN = <value>
FILTER_CONSEN = 0.5*<value>
FILTER_DV = 0.5*<value>
END_
It is also possible to set individual filter radii. For the objective function sensitivity filtering use FILTER_SEN= <positive_real_value>, [ABS|REL]
For filtering the sensitivities of the constraints, use
FILTER_CONSEN= <positive_real_value>, [ABS|REL]
and for filtering the design variables use
FILTER_DV= <positive_real_value>, [ABS|REL]
| |||||||||||||