Gmsh unknown error
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Gmsh unknown error
Hello,
I am trying to mesh this part. First I fuse it and then I try to mesh it using Gmesh. Each time I did it i got unknown error. I have checked geometry and it seams fine.
I also tried different min mesh sizes, to no effect.
Can someone provide me with some insight please?
Kind regards,
Peter
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4 (GitTag)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 980bf9060e28555fecd9e3462f68ca74007b70f8
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Slovenian/Slovenia (sl_SI)
EDIT: Bernd ... Gmsh insead of Gmesh
.
I am trying to mesh this part. First I fuse it and then I try to mesh it using Gmesh. Each time I did it i got unknown error. I have checked geometry and it seams fine.
I also tried different min mesh sizes, to no effect.
Can someone provide me with some insight please?
Kind regards,
Peter
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4 (GitTag)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 980bf9060e28555fecd9e3462f68ca74007b70f8
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Slovenian/Slovenia (sl_SI)
EDIT: Bernd ... Gmsh insead of Gmesh
.
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Kind regards,
Peter
Peter
Re: Gmesh unknown error
This structure consists of many very thin bars modeled as solids. It will be hard to mesh it (and achieve sufficient mesh density) because you would need lots of very small tetrahedrons. In such a case it's highly advisable to model the structure with lines and mesh it using 1D (beam/truss) elements.
Also, your FreeCAD version is quite outdated. I suggest switching to the newest release (0.20, currently a dev version). FEM module changed a lot since then.
Also, your FreeCAD version is quite outdated. I suggest switching to the newest release (0.20, currently a dev version). FEM module changed a lot since then.
Re: Gmesh unknown error
Alone you go faster. Together we go farther
Please mark thread [Solved]
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Please mark thread [Solved]
Want to contribute back to FC? Checkout:
'good first issues' | Open TODOs and FIXMEs | How to Help FreeCAD | How to report Bugs
Re: Gmesh unknown error
Hi,
Sorry for my ignorance. I will redo thproces in 0.20 and post replay.
Regards,
Peter
Sorry for my ignorance. I will redo thproces in 0.20 and post replay.
Regards,
Peter
Kind regards,
Peter
Peter
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- Posts: 11
- Joined: Sun Mar 13, 2022 7:54 pm
- Location: Україна/Ukraine
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Re: Gmesh unknown error
For such geometry better to use beam FEs with assign cross section to them. Calculix supports round and rectangle cross sections.
Make schime from lines, results of calculation will be the same.
Make schime from lines, results of calculation will be the same.
Re: Gmesh unknown error
Hi,
I have re done everything in FreeCAD v0.20. Mesh is done this time although with an error. However when I try to asign the material to it I get the error:
22:41:16 Single click on a Face or Edge which belongs to one Solid will add the Solid to the list!
22:41:25 Selection: Compound Fusion Edge1
22:41:25 Selection variable adapted to hold the Solid: Compound Fusion Solid1
22:41:25 Multiple shape types are not allowed in the reference list.
22:43:45 Traceback (most recent call last):
File "C:\Program Files\FreeCAD 0.20\Mod\Fem\femguiutils\selection_widgets.py", line 613, in addSelection
self.parseSelectionFunction(self.added_obj)
File "C:\Program Files\FreeCAD 0.20\Mod\Fem\femguiutils\selection_widgets.py", line 488, in selectionParser
selection[0].Shape.ShapeType,
<class 'AttributeError'>: 'FeaturePython' object has no attribute 'Shape'
Can anyone makes any sense of it?
Regarding the solution with using lines, what is the best way of doing that? Should I use Sketcher, what would you suggest?
Kind regards,
Peter
OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.27422 (Git)
Build type: Release
Branch: master
Hash: d938733eaf2c2ce7cb18d1cbb56147185c473530
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.3
Locale: Slovenian/Slovenia (sl_SI)
I have re done everything in FreeCAD v0.20. Mesh is done this time although with an error. However when I try to asign the material to it I get the error:
22:41:16 Single click on a Face or Edge which belongs to one Solid will add the Solid to the list!
22:41:25 Selection: Compound Fusion Edge1
22:41:25 Selection variable adapted to hold the Solid: Compound Fusion Solid1
22:41:25 Multiple shape types are not allowed in the reference list.
22:43:45 Traceback (most recent call last):
File "C:\Program Files\FreeCAD 0.20\Mod\Fem\femguiutils\selection_widgets.py", line 613, in addSelection
self.parseSelectionFunction(self.added_obj)
File "C:\Program Files\FreeCAD 0.20\Mod\Fem\femguiutils\selection_widgets.py", line 488, in selectionParser
selection[0].Shape.ShapeType,
<class 'AttributeError'>: 'FeaturePython' object has no attribute 'Shape'
Can anyone makes any sense of it?
Regarding the solution with using lines, what is the best way of doing that? Should I use Sketcher, what would you suggest?
Kind regards,
Peter
OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.27422 (Git)
Build type: Release
Branch: master
Hash: d938733eaf2c2ce7cb18d1cbb56147185c473530
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.3
Locale: Slovenian/Slovenia (sl_SI)
Kind regards,
Peter
Peter
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- Veteran
- Posts: 3158
- Joined: Sat May 20, 2017 12:06 pm
- Location: Germany
Re: Gmesh unknown error
You can put different 1D-objects (sketches, draft-lines) in a "Part/Boolean-Fragment" object
to mesh/run the simulation. See example:
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- Posts: 11
- Joined: Sun Mar 13, 2022 7:54 pm
- Location: Україна/Ukraine
- Contact:
Re: Gmesh unknown error
In my opinion better to use Draft Workbench and instead of Circle, for more correct meshind, use Polygon. To see in results cross sections dimensions in Calculix properties "Beam Shell Result Output 3D" shold be set "true". See example
Re: Gmesh unknown error
Hi,
thank you for your answers. I am now working on lines model, however, I have to place a thin membrane in front and I want to apply pressure on it. How can I do it for the model made out of 1D elements? Should I extrude just the arc? How should I mesh it all together?
thank you for your answers. I am now working on lines model, however, I have to place a thin membrane in front and I want to apply pressure on it. How can I do it for the model made out of 1D elements? Should I extrude just the arc? How should I mesh it all together?
Kind regards,
Peter
Peter
-
- Posts: 11
- Joined: Sun Mar 13, 2022 7:54 pm
- Location: Україна/Ukraine
- Contact: