No mesh

[HarryvL]

After having used FC successfully for a few months, yesterday I hit a really basic problem with FEM WB, i.e. Mesh > "FEM Mesh from shape by GMSH" runs and completes without warnings, but doesn't produce a mesh.

I have updated to the latest PPA, without improvement:

OS: Ubuntu 16.04.4 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13674 (Git)
Build type: None
Branch: master
Hash: 32f089f28408479ce65a22a753bb815ffe3d45ed
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/UnitedStates (en_US)

I am sure I am doing something really stupid , but can't figure out what, so some help would be appreciated.

File attached

No_Mesh.fcstd

(6.21 KiB) Downloaded 63 times

[thschrader]

Hi Harry,
sorry, but on my Win10 System all meshers run fine. I tested
FEM: gmsh, netgen, meshrefinement
and
cfd: gmsh, cfmesh, snappyhexmesh.
But: when doing FEM, my last step is to mesh the body.
Done with
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13671 (Git)
Build type: Release
Branch: master
Hash: c36026358222da48a1a8ab3eec87a4a4a5166b7e
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: German/Germany (de_DE)

meshes.JPG (152.66 KiB) Viewed 2738 times

[HarryvL]

Hi Thomas. I never had a problem before but last night after returning from a trip I couldn't get to Mesh anything anymore. No errors but also no mesh. I therefore upgraded FC, but still no luck. Even the mixed mesh version of FC that I used for the bridge project doesn't mesh anymore. I guess something to do with my GMSH installation?!

[thschrader]

I guess something to do with my GMSH installation?!

Difficult to say for me. I never worked with Ubuntu. As a standard, I use the
ccx/gmsh from ..freecad/bin folder in windows. No problem.
Thomas

[HarryvL]

Anybody know how I can achieve a clean installation on Ubuntu 16:04?

[bernd]

harry, would you post the output of your report window?

Does Gmsh runs without FreeCAD?
- open the geo file created by FreeCAD
- copy the bash command
- run the bash command in a shell
- use FreeCAD to import the unv created by Gmsh.


Bernd

[bernd]

BTW:
you do not need an analysis to mesh a shape! See screen.


harry your file meshes fine here on:

OS: Debian GNU/Linux 9.4 (stretch)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13707 (Git)
Build type: Debug
Branch: master
Hash: 4cb93bf6690ce84a121c2e3a47cefc498fd12013
Python version: 2.7.13
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.0.0
Locale: German/Switzerland (de_CH)

Screenshot_20180515_071712.png (94.42 KiB) Viewed 2673 times

[HarryvL]

Thanks Bernd. I will give it a try. I have 3 versions of FC installed now (Daily, v17 and your branch for miclxed mesh). They all fail to mesh. Do they all use the same GMSH? Not sure how to get to the Daily GMSH version.

[bernd]

Thanks Bernd. I will give it a try. I have 3 versions of FC installed now (Daily, v17 and your branch for miclxed mesh). They all fail to mesh. Do they all use the same GMSH?

yes

Not sure how to get to the Daily GMSH version.

ATM I'm on a windwos machine, but this should be:

Code: Select all

gmsh --version

in a shell, or you just start gmsh gui of your ubuntu und got to about or help or whatever the verion info is printed in gmsh gui.

[sgrogan]

I will give it a try. I have 3 versions of FC installed now (Daily, v17 and your branch for miclxed mesh). They all fail to mesh. Do they all use the same GMSH? Not sure how to get to the Daily GMSH version.

GMSH is independent from any FreeCAD version, we don't list it as dependency of the PPA's. So whatever gmsh you have on your system from your package manager should be the same for all FreeCAd versions.