custom cross section for beam FEM

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mwlandolsi
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Joined: Sun Jan 31, 2021 10:49 pm

custom cross section for beam FEM

Post by mwlandolsi »

Hello all,
I want to create a 3d structure, but I need to calculate the deformation with different sections than that are available ( ImageRectangular, circular, pipe). I need a Rectangular pipe. Is there a way to define a custom section beam?
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NewJoker
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Re: custom cross section for beam FEM

Post by NewJoker »

CalculiX supports it but FreeCAD doesn't at the moment. You would have to edit the input file manually. Details are described in this thread: https://forum.freecadweb.org/viewtopic.php?f=18&t=60808
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mwlandolsi
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Re: custom cross section for beam FEM

Post by mwlandolsi »

Thank you. I will give it a try. :) :)
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NewJoker
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Re: custom cross section for beam FEM

Post by NewJoker »

There's an exemplary input file userbeam.inp in CalculiX test examples package if you need some reference in addition to the ccx documentation. Just be careful since you may encounter some bugs with this type of beam element. Two of them were reported on the CalculiX forum, one was fixed in ccx 2.18 but the other one still persists (it shouldn't be present in the next version though).
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