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The Advanced User Settings can be added to a Scenario by right clicking on this and selecting the option as shown in the picture below.
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The software uses four resolution levels from coarse to fine (level 0: coarse - level 3: fine). The number behind the level indicates the number of iterations calculated on this resolution level. To remove or skip a resolution level the value can be set to 0. Moreover, the Event Safety Coefficient for each resolution level can be changed. This coefficient is a scaling factor for the safety factor. More information about the safety factor, stress, failure criteria and resolution here.
To set up these additional parameters, the Input Commands (left side of the table) need to be added to the optimisation model in the Advanced User Settings Text Field. In the picture below an example is shown. By adding these Advanced User Settings, the first (coarse) resolution level will be skipped and the optimisation starts directly at the second level. You might want to add more iterations to the remaining levels to give the optimisation the chance to reduce the material accordingly and reach a convergence in each level. Especially level 2 can use more iterations in this case.
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This way a two-stage optimisation is also possible. For a two-stage optimisation the resolution level and number of iterations must be chosen wisely and will need some fine tuning.
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Activate Automatic Non-Design Growth
Per default all Non-Design surfaces All areas applied with a boundary condition are automatically Interfaces. With an Interface the surface will grow a little bit beyond their the Design Space boundaries to ensure a trouble-free and clean intersection. This is done with an automatic detection of Non-Design faces. Sometimes this can lead to issues.
Every time when Machining Allowances are applied on all functional surfaces this function can be deactivated. Even if this surface won’t be post processed and no additional material is needed, a Machining Allowance of 0 mm can be applied. This ensures sharp edges and planar, functional surfaces after the intersection.
How the automatic Non-Design growth influence the resulting geometry here.
This automatic growing can be deactivated with the Advanced User Settings command belowIt is also possible to detect all Non-Design Space surfaces which are at the same time Design Space limits and let them grow automatically. This option results in a different connection between the Design Space and the Non-Design Spaces/Interfaces. Both results can be viewed here.
If the connection of the automatic Non-Design Growth is preferred, it can be activated with the following command:
configuration.autodetection.positiveNonDesignDirection = falsetrue |
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If this command is activated, pressure loads are not considered in the optimization. This combination of options is currently unsupported.Sometimes this can lead to issues which are described here.
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You might also be interested in these tutorials:
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