The Advanced User Settings give the possibility to (re-)start an optimisation with a Start Space. With this option already optimised results can be modified, e.g. struts can be added or removed, and this new geometry can be used as the starting point of another optimisation. With this Two-Stage-Optimisation already optimised geometries can be highly influenced and steered in the desired direction.
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The last iteration of the nominal geometry is selected and transferred to the Pre Processing with the Transfer Design Candidate Shape to pre-processing button. Open the Conversion Settings and select the option Facet. The selected geometry is transferred as a faceted solid to the Pre Processing.
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In the last step the optimisation can be (re-)started with the new, modified Start Space. Therefore, the previous Scenario can be copied.
For the copied Scenario the Advanced User Settings have to be set-up. These are used to adjust the number of iterations for each Resolution Level. In most of the cases a Two-Stage-Optimisation should start directly on the highest Resolution Level or at least on the last two Resolution Levels.
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schedule.level.0.iterationCount = 0
schedule.level.1.iterationCount = 0
schedule.level.2.iterationCount = 3
schedule.level.3.iterationCount = 3schedule.level.0.eventSafetyCoefficient = 0.3
schedule.level.1.eventSafetyCoefficient = 0.4
schedule.level.2.eventSafetyCoefficient = 0.9
schedule.level. 3.eventSafetyCoefficient = 1schedule.startCandidate.candidate= <restart-file.stl>
geometry.startCandidate.path= <restart-file.stl>
Also, the path to the modified Start Space has to be selected in the respectable field.
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The complete MSC Apex GD project with all results can be downloaded here:
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