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Currently, the creation of displacement constraints with RBE2 ties and rotational degrees of freedom isn’t supported from the graphical user interface. To realize it, dummy loads are created and modified with by the Advanced User Settings.
On the outer cylindric surfaces two dummy loads are created. These dummy loads need to have a load value in a the direction which will be constraint afterwards.
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The same is done for the second dummy load. For this, the translational displacement in x-direction is free as well.
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Therefore, the optimisation scenario is exported by a right click on the scenario to a freely selectable folder.
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Inside the exported folder where , all geometry information and the input configuration file for the optimisation lays a are stored. A PowerShell or command line has to be opened here.
Inside the installation folder of MSC Apex the “runGD_Engine-bat” has to be executed with the additional command (-c) for the configuration file.
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With the Mission Switch the optimised result can be analysed with MSC Apex / Nastran. The following gif shows the rotation in the created displacement constraints.
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The whole complete MSC Apex Generative Design project with all results can be downloaded here:
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