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With the Advanced User Settings the optimization parameters can be influenced even further than the options Strut Density and Shape Quality. Furthermore a few unsupported options are available using this text field the Advanced User Settings like Symmetry, Intersection and the usage of Start spaces.

The Advanced User Settings can be added to a scenario by selecting the option with a right mouse click.

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The appearing text field can be used by adding Advanced User Comands to the current Generative Design scenario.

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Influencing the Strut Density

To influence the Strut Density even further, changes of the number of iterations, stress goal percentage and number of resolution levels can be made. These settings overwrite the selection of the Strut Density and the Shape Quality as they are only default settings for the ones described here. The table gives an overview of default settings:

Input Commands

Explanation

UpSampleConfig

fOptimizer_switchAddRemove=58

Starting with iteration 58, elements are either added or removed and only every second iteration is saved. This is important for the iterations near to the end of the optimization.

iteration

.level_3=10"

.level_2=10"

.level_1=20"

.level_0=30"

Specify how many iterations are calculated at which resolution level. Note that convergence should be achieved at each level.

Default settings normal: 20, 20, 20, 10

Default settings massive: 10, 10, 20, 30

Default settings filigree: 16, 40, 4, 4

Optimizer_stressPercentGoal

.level_3=10

.level_2=25

.level_1=50

.level_0=100

The percentage at which the target stress is reached is set.

Default settings normal: 30, 40, 90, 100

Default settings massive: 10, 25, 50, 100

Default settings filigree: 60, 90, 95, 100

By default the software uses four resolution level from coarse to fine (level 3: coarse - level 0: fine). More or less resolution level can be added or removed. The number behind the level indicates the number of iterations. Moreover, the stressPercentGoal for each resolution level can be changed. More information about the stresses and resolution here.

To set up these additional parameters, the left side of the table needs to be added to the optimization model in the Advanced User Settings Text Field. In the picture below an example is shown. By adding this advanced user settingsAdvanced User Settings, the first (coarse) resolution level will be skipped.

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Symmetry

With the advanced user settings a symmetrical optimization can be done. Therefore the geometry as well as the boundary conditions need to be symmetrical. For now the part must be located in the global coordinate origin.

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In most cases the Strut Density and Shape Quality settings have also to be changed with the advanced user settings Advanced User Settings. For a restart the same resolution level and number of missing iterations have to be filled in. For an two-stage optimization the resolution level and number of iterations must be chosen wisely.

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