View Issue Details

IDProjectCategoryView StatusLast Update
0003315FEM[FreeCAD] Bugpublic2019-07-23 23:43
ReporterHarryvLAssigned Toberndhahnebach 
PrioritynormalSeverityminorReproducibilityalways
Status assignedResolutionopen 
PlatformOracle VMOSUbuntuOS Version16.04.3 LTS
Product Version[FreeCAD] 0.17 
Target VersionFixed in Version 
Summary0003315: FEM, mesh groups only work after calling gmsh again
DescriptionAfter adding mesh groups the mesh needs to be regenerated by GMSH for the Export INP option to export them properly.
Steps To Reproduce1) generate mesh
2) add mesh groups
3) export to INP
gives wrong results
1) generate mesh
2) add mesh groups
3) export to INP
4) generate mesh
gives right results
TagsFEM

Activities

HarryvL

2018-01-16 17:54

reporter   ~0010771

OS: Ubuntu 16.04.3 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.12960 (Git)
Build type: None
Branch: master
Hash: b6304d16a77f65f94aa5ec79f69688be61a42961
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)

berndhahnebach

2018-01-23 17:02

developer   ~0010824

It's not a bug it's a feature. ATM FreeCAD FEM does not search for the group data inside the mesh. This is on my LongTermToDo. ATM we gone use GMSH to generate groups. That is why groups can only be used with GMSH mesh. That is why elmer FEM needs a GMSH mesh. That is why with groups one needs to remesh.

I will close this. We may open a feature to extend the FEMMesh Python API in the regard of creating groups from an existing mesh by searchting the mesh for the approbriate data. It is not a big deal. Anything is there in either SMESH or FreeCAD FEM.

Bernd

berndhahnebach

2018-01-23 17:03

developer   ~0010825

We may add an print or message box after a change on a group as a hint for the user that he needs to remesh. I will leave the ticked open.

bernd

Kunda1

2019-07-23 23:43

administrator   ~0013378

Discussion thread: https://forum.freecadweb.org/viewtopic.php?f=18&t=37937

Issue History

Date Modified Username Field Change
2018-01-16 03:38 HarryvL New Issue
2018-01-16 03:38 HarryvL Tag Attached: FEM
2018-01-16 15:03 Kunda1 Tag Attached: #post-to-forum
2018-01-16 17:43 Kunda1 Status new => assigned
2018-01-16 17:43 Kunda1 Assigned To => berndhahnebach
2018-01-16 17:54 HarryvL Note Added: 0010771
2018-01-23 17:02 berndhahnebach Note Added: 0010824
2018-01-23 17:03 berndhahnebach Note Added: 0010825
2018-09-18 06:10 berndhahnebach Summary Mesh Groups only work after calling GMSH again => FEM, mesh groups only work after calling gmsh again
2019-07-23 23:43 Kunda1 Note Added: 0013378
2019-07-23 23:43 Kunda1 Tag Detached: #post-to-forum