no there should not. Even if you have four materials. You only need one self weight if you would like to have the self weight for the whole body. See attached file and screen.thschrader wrote: ↑Tue Apr 07, 2020 5:25 pmYou use 4 different materials with different densities. There should be 4 entries forDE_Michael wrote: ↑Tue Apr 07, 2020 5:03 pm Do you have an idea how I could solve the problem with the self-weight boundary condition?
If I remove this constraint completely, I still can't write the input file.
self weight. I will try this tomorrow (I am writing from my private pc without FC0.19...)
Geometry too complicated?
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Re: Geometry too complicated?
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Re: Geometry too complicated?
Hello Bernd,
thank you for your advice.
Anyway, it seems to be (also) related to the materials. Because if I create the entire geometry using one material, everything works without problems within seconds.
Greetings
Michael
thank you for your advice.
That's consistent with my experience.
Anyway, it seems to be (also) related to the materials. Because if I create the entire geometry using one material, everything works without problems within seconds.
Greetings
Michael
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Re: Geometry too complicated?
@Bernd:
When opening your test file and doubleclicking on mesh, the transform-tool opens (?).
Creating an new mesh with gmsh gives an error.
Remeshing and running with netgen works.
@Michael:
Meshing with netgen works. But writing the inp needs endless time, still running. Lets wait and see...
When opening your test file and doubleclicking on mesh, the transform-tool opens (?).
Creating an new mesh with gmsh gives an error.
Remeshing and running with netgen works.
@Michael:
Meshing with netgen works. But writing the inp needs endless time, still running. Lets wait and see...
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Re: Geometry too complicated?
Writing failed. However, Eastern knocks on the door, I will try to remodel the aquarium.
Re: Geometry too complicated?
@tschrader,
this is a pure mesh, no Netgen no Gmesh mesh object. It is similar to a mesh imported by unv mesh file format. You can not edit it with Gui tools ATM. You can distinguish them by the icon. Neither N nor G is a pur mesh object.
this is a pure mesh, no Netgen no Gmesh mesh object. It is similar to a mesh imported by unv mesh file format. You can not edit it with Gui tools ATM. You can distinguish them by the icon. Neither N nor G is a pur mesh object.
Re: Geometry too complicated?
but Gmsh should not give an error. I will give it a try too.
Re: Geometry too complicated?
no problems here on createing a new gmsh mesh object and mesh with gmsh. Might be you have an older version of 0.19 dev. In Februar and March there where some regressions on some FEM objects. They all should be fixed in latest 0.19 dev versions. Would you double check?thschrader wrote: ↑Thu Apr 09, 2020 6:37 am @Bernd:
When opening your test file and doubleclicking on mesh, the transform-tool opens (?).
Creating an new mesh with gmsh gives an error.
...
cheers bernd
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Re: Geometry too complicated?
Updated FC0.19:
Sorry, error remains with test-file.
Running my old steel parts works fine.
done with:
OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.20477 (Git)
Build type: Release
Branch: master
Hash: 7d8ab175a68e476427e6e337fe3099b52da49dc8
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)
Re: Geometry too complicated?
confirmed ...
Error:
It happens only if group meshing is activated in FEM preferences. I try to have a look at this.
Error:
Code: Select all
Error: The shapes for the mesh group for the reference shapes of analysis member: None could not be found!
Re: Geometry too complicated?
- https://github.com/FreeCAD/FreeCAD/blob ... 1879-L1881
- https://github.com/FreeCAD/FreeCAD/blob ... 1995-L1998
in both comments it is missing the self weight could have empty references on solid meshes too. The self weight does not have the references attribute but it is not used in FreeCAD. In this case it even creates a problem on group meshing. Load file, activate group meshing, activate the analysis, mesh.
- https://github.com/FreeCAD/FreeCAD/blob ... 1995-L1998
in both comments it is missing the self weight could have empty references on solid meshes too. The self weight does not have the references attribute but it is not used in FreeCAD. In this case it even creates a problem on group meshing. Load file, activate group meshing, activate the analysis, mesh.