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Instead of the Design space a other volume can be chosen as the Start space. The Design space is still the limit for this optimization. With this option a terminated optimization can be continued or a two-stage optimization with varified optimization parameters can be done.
Restart
The Start space has to be a STL-file. Therefore a already optimized geometry can be exported inside the Post Processing. In this case iteration 22 from the symmetrical Bridge will be used.
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After adding this comands to the Advanced User Settings the optimization can be started. The first iteration of the restarted optimization will be the imported Start space.
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Two-stage optimization
A seconed possibility is to perform a two-stage optimization. Instead of a simple restart with the same optimization parameters the parameters can be verified.
Examples:
Skipping the coarse resolution level and caluclate directley on the finest resolution level with an early iteration from a former optimization, if a very fine high-resoltion level is desired
Varify the value for the stress goal to keep the overall geometry with more or less material
Modify an optimization output (remove or add struts) and restart with this modified geometry
Creation of a lattice stucuture of an optimization output and restart to optimize the lattice
A two-stage optimization is useful for the following applications:
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