calculix
Conservation of certain areas
Is there a way to conserve certain areas or shapes of my object?
For example if I have a rectangular beam, I want to still have the rectangular shape and only within there should be a topology optimization? This kind of optimization can be done for example in Z88Arion.
Like you did in Example 3 with the non-design spaces but with the FreeCAD.
Thanks and greetings.
Optimization domain is defined by the elset_name in the beso_config.py Elements which are not in this elset are not optimized. If you use FreeCAD macro, it can be done as well. When preparing the model, create a separate material object for what you want to optimize and separate material object for areas not intended for the optimization. In the beso_fc_gui.py you then select only the material object to be optimized. Or, you can use also the column Domain 1 or Domain 2 and untick As design domain so that this area will be visible in the resulting mesh, but not optimized.
What exactly do you mean by separate material object? I can create seperate bodies in FreeCAD but how does the *.inp-file know which are the different Domains. I always only have one Domain. How do I create different Domains in FreeCAD so that the GUI can distinguish them? And is there an in depth explanation of the complete GUI? Thank you so far.
When preparing the geometry, you need to make partitions FEM_Geometry_Preparation_and_Meshing It will make parts which can be selected, when you are creating a material object FEM_MaterialSolid The GUI does not have a manual. There are only tool tips when you hover a mouse.
I used very course mesh, but preserved domain in the middle is clear in the resulting mesh:
FreeCAD file multidomain.zip