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Please, have a look at the detailed Tutorial here.
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With Options-> Missions-> Nastran it is possible to directly switch to MSC Apex where only the meshing of the geometry and the creation of a 3D Element Property needs to happen for an analysis to be ready to go.
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During the Mapping Loads & Materials of symmetrical designs only half of the LBCs are mapped to the structure as only half were applied to the model. Please add the other LBCs before running an analysis with MSC Apex.
Note: If you open and update a model from a version older than the 2023.3 it can happen that some forces are only visible in the nastran mission. In this case, it is advisable to recreate the force once.
There are two possible workflows with two different geometry types:
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