FEM_FrontISTR Workbench
Moderator: bernd
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and Helpful information for the FEM forum
and Helpful information for the FEM forum
Re: FEM_FrontISTR Workbench
Love the samples. Please add more! The contact ones?
I opened one sample, In FEM wb, use Gmsh to mesh. Sometimes the result node is added to the same level as Analysis. Then the solver can't find that mesh.
But this is a problem of FEM wb. It should add under Analysis in the tree.
I opened one sample, In FEM wb, use Gmsh to mesh. Sometimes the result node is added to the same level as Analysis. Then the solver can't find that mesh.
But this is a problem of FEM wb. It should add under Analysis in the tree.
Re: FEM_FrontISTR Workbench
my testcase:
https://forum.freecadweb.org/viewtopic. ... 1&p=504665
(Number of quadratic tetrahedrons: 248750)
Could only get frontistr AMG/CG to finish
Where is the beaf?
https://forum.freecadweb.org/viewtopic. ... 1&p=504665
(Number of quadratic tetrahedrons: 248750)
Could only get frontistr AMG/CG to finish
Where is the beaf?
- MisterMaker
- Posts: 746
- Joined: Mon Sep 21, 2020 7:41 am
- Contact:
Re: FEM_FrontISTR Workbench
I btw also tried it and it is a keeper!
Mseh was medium size but calcu had issues with it, and FrontlSTR was way quicker!
https://twitter.com/MvdH74169613/status ... 59969?s=20
Mseh was medium size but calcu had issues with it, and FrontlSTR was way quicker!
https://twitter.com/MvdH74169613/status ... 59969?s=20
Re: FEM_FrontISTR Workbench
if the analysis is active the mesh should go into the analysis! If not we should investigate. Would you write the steps to repeate to not get the mesh into the analysis.johnwang wrote: ↑Wed Jun 02, 2021 12:16 pm Love the samples. Please add more! The contact ones?
I opened one sample, In FEM wb, use Gmsh to mesh. Sometimes the result node is added to the same level as Analysis. Then the solver can't find that mesh.
But this is a problem of FEM wb. It should add under Analysis in the tree.
mesh.jpg
bernd
Re: FEM_FrontISTR Workbench
After open one FCstd file, in FEM WB, the A icon is in yellow and if choose the object, the Gmsh G icon is in color, So I could do meshing.
Seems I still need to choose the Analysis node in the tree and active it.
Re: FEM_FrontISTR Workbench
Hi kinagaki,
many thanks for this great addon!
Since others in the forum could sucessfully use it, I gave it a try as well but failed:
Here is my test file: http://ftp.lyx.de/FreeCAD/Simulation-2- ... ISTR.FCStd
When I write the input file, it says everything worked fine:
Code: Select all
2.6: Writing .inp file and partitioning completed.
When I now run the solver I get
Code: Select all
0.0: FrontISTR binary: C:\Users\USti\AppData\Roaming\FreeCAD\Mod/FEM_FrontISTR/bin/fistr1.exe
0.0: Run FrontISTR...
0.0: Starting FrontISTR...
0.0: FrontISTR is running...
0.3: FrontISTR stopped.
0.3:
job aborted:
[ranks] message
[0] application aborted
aborting (comm=0x84000000), error 41024216, comm rank 0
[1-3] terminated
---- error analysis -----
[0] on USER-PC
C:\Users\USti\AppData\Roaming\FreeCAD\Mod/FEM_FrontISTR/bin/fistr1.exe aborted the job. abort code 41024216
---- error analysis -----
0.3: FrontISTR execute error:
0.3: Loading result sets...
Code: Select all
23:07:33 run FrontISTR at: G:/FreeCAD-Simu/FrontISTR/Simulation-2-Cuts-FrontISTR/SolverFISTRTools, n_process =4
23:07:34 Error()
23:07:34 OutputFileFormat: AVS
23:07:34 We will load the fistr visualized file.
23:07:34 loading results failed: list index out of range
There is another issue:
As you mentioned ISTR can also run thermal analyses but the dialog do not offer the other analysis types: (They are only available using the solver properties.)
Re: FEM_FrontISTR Workbench
Thanks all for your comments and trials.
@johnwang
FEM_FrontISTR does not support contact analysis at the moment, but the solver does.
I'm working on it in order to provide the contact analysis functionality.
@uwestoehr
Thanks for your report! I could reproduce the same error and it seems to be due to assigning multiple materials in the model.
Honestly, I didn't know that such an analysis is possible on FreeCAD FEM workbench, and failed to take it into account.
I'll work hard to fix this issue since I'm one of the people who would like to do this kind of analysis.
FEM_FrontISTR support for thermal analysis is currently under preparation.
So It is inappropriate to have unsupported functions available in Analysis type...I'm going to fix it.
Sorry for not replying individually, but all your comments are very encouraging. Thanks a lot.
@johnwang
FEM_FrontISTR does not support contact analysis at the moment, but the solver does.
I'm working on it in order to provide the contact analysis functionality.
@uwestoehr
Thanks for your report! I could reproduce the same error and it seems to be due to assigning multiple materials in the model.
Honestly, I didn't know that such an analysis is possible on FreeCAD FEM workbench, and failed to take it into account.
I'll work hard to fix this issue since I'm one of the people who would like to do this kind of analysis.
FEM_FrontISTR support for thermal analysis is currently under preparation.
So It is inappropriate to have unsupported functions available in Analysis type...I'm going to fix it.
Sorry for not replying individually, but all your comments are very encouraging. Thanks a lot.
FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD
Re: FEM_FrontISTR Workbench
OK. I will add a note to the Wiki page https://wiki.freecadweb.org/FEM_FrontISTR_Workbench for the meantime.
Please don't feel under pressure to fix this soon. We all spend our spare time and there is summer -> many other things to to
Good to know. I will add a not to the Wiki page too.FEM_FrontISTR support for thermal analysis is currently under preparation.
many thanks for all your good work and regards
Uwe
Re: FEM_FrontISTR Workbench
@uwestoehr
Thank you for your kindness. I will update this wb at my own pace
Thank you for your kindness. I will update this wb at my own pace
FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD
Re: FEM_FrontISTR Workbench
since this is no longer a anouncement topic, how about move it to FEM part of the forum. It may get even more attraction over there?