Stress Result in Shells

[bernd]

Found it Here https://github.com/FreeCAD/FreeCAD/blob ... s.cpp#L449 we gone set the count of points to the count of nodes we have in our mesh, but we need to set it not to the count of point but to the highest node ID instead. This does not crash anymore but I'm not yet happy with the way I get the highest node id. https://github.com/berndhahnebach/FreeC ... 5f4d07104e

Step by step we will get there ...

[bernd]

https://github.com/FreeCAD/FreeCAD/pull/1396 it does fix the crash, and vtk mesh export works. But the result pipeline still does not work if the SMESH mesh has node gaps. An error message is printed in report view.

At least FreeCAD does no longer crash

[bernd]

saving and reloading the file normalizes the element and node numbering of the result mesh. They start with one after reload.

thus result mesh node numbers are not equal to results anymore thus the results are wrong. I reopened issue issue #2873

[bernd]

https://github.com/FreeCAD/FreeCAD/pull/1396 it does fix the crash, and vtk mesh export works. But the result pipeline still does not work if the SMESH mesh has node gaps. An error message is printed in report view.

At least FreeCAD does no longer crash

issue #3617

[bernd]

https://github.com/FreeCAD/FreeCAD/pull/1396 it does fix the crash, and vtk mesh export works. But the result pipeline still does not work if the SMESH mesh has node gaps. An error message is printed in report view.

At least FreeCAD does no longer crash

issue #3617

should be fixed with git commit 1643520 testing is highly appreciated

[HarryvL]

much better, but still some funny colorful patches (in blue):

Strip.jpg (49.6 KiB) Viewed 1030 times

OS: Ubuntu 16.04.5 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15646 (Git)
Build type: Unknown
Branch: master
Hash: fdf8fe7bc6ed671e8b7ee064000b6f00567ce795
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.1.0
Locale: English/UnitedStates (en_US)

[bernd]

you gone mix bugs harry ... issue #2873 and issue #3617

generate 3D resultmesh from a 2D analysis. Run analysis:

what works now ... make a vtk result object and enjoy

what does not yet work ... save the FreeCAD file, reload the FreeCAD file and use FreeCAD result object viewer

BTW: vtk result should work on file reload. FreeCAD result works as long as the file is not saved.

Would you confirm this?

[HarryvL]

Would you confirm this?

Oops sorry

VTK before export:

Strip_VTK_1.jpg (37.65 KiB) Viewed 995 times

VTK from import:

Strip_VTK_2.jpg (38.36 KiB) Viewed 995 times

Great, it works !!

[wmayer]

you gone mix bugs harry ... issue #2873 and issue #3617

BTW: vtk result should work on file reload. FreeCAD result works as long as the file is not saved.

The problem with reloading the the unv file is that smesh performs the function compatMesh() and thus changes all the ids. The question is whether there is a way to handle this.

[bernd]

you gone mix bugs harry ... issue #2873 and issue #3617

BTW: vtk result should work on file reload. FreeCAD result works as long as the file is not saved.

The problem with reloading the the unv file is that smesh performs the function compatMesh() and thus changes all the ids. The question is whether there is a way to handle this.

Two years ago we disscussed this with user vejmarie and decided to leave compactMesh(), but at that time the 3D mesh result from 2D analysis (which introduces node gaps in the mesh) was not possible. Thus the bug was closed and reopend a few month ago when we found this problem. The next problem is, we can not just deactivate the compactMesh() IMHO. Thus because it is possible to compile FreeCAD with external SMESH which still has compactMesh() ...

Werner do you see any solution apart from use some compactMesh() right at the beginning when we create a mesh in FreeCAD. With this the mesh is renumbered during import from frd file.

bernd