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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 Densityand the Shape Quality as they are only default settings for the ones described here. The table gives an overview of the default settings:
Input Commands | Explanation |
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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 optimisation. |
iteration .level_3=20 .level_2=20 .level_1=20 .level_0=4 | Specify how many iterations are calculated at which resolution level. Note that convergence should be achieved at each level. Default settings medium: 20, 20, 20, 4 Default settings sparse: 16, 40, 4, 4 Default settings dense: 10, 10, 40, 4 |
Optimizer_stressPercentGoal .level_3=30 .level_2=40 .level_1=90 .level_0=100 | The percentage at which the target stress is reached is set. Default settings medium: 30, 40, 90, 100 Default settings sparse: 60, 90, 95, 100 Default settings dense: 10, 25, 50, 100 |
The software uses four resolution levels from coarse to fine (level 3: coarse - level 0: fine). More or less resolution levels can be added or removed. The number behind the level indicates the number of iterations calculated on this resolution level. Moreover, the stressPercentGoal for each resolution level can be changed. More information about the stresses and resolution here.
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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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Enable Automatic Non-Design Growth
Per default With the automatic Non-Design growth all Non-Design surfaces grow a little bit beyond their 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 doesn’t need to be deactivatedactivated. 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.
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This automatic growing can be deactivated activated with the Advanced User Settings command below:
automaticFunctionalFacesDetection.positiveNonDesignDirection= |
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true |
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You might also be interested in these tutorials:
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