Is FEM Running?

[PrzemoF]

[..]This thermo-mechanical version is having some problem, I guess. CCX input file writer gets stuck at 50%.
Any solutions?

Can you post the file, so we can try to replicate the problem? What version of FreeCAD do you use?

[cnirbhay]

OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.16.6704 (Git)
Build type: Release
Branch: releases/FreeCAD-0-16
Hash: 0c449d7e8f9b2b1fb93e3f8d1865e2f59d7ed253
Python version: 2.7.8
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17

Above are the version details. But today I downloaded similar version with thermo-mechanical attributes in which I'm facing the problem.
Here is the file.

[ulrich1a]

Above are the version details. But today I downloaded similar version with thermo-mechanical attributes in which I'm facing the problem.

The thermo-mechanical analysis is only available in the current development version, except you have a special patched version.
It could also be, that the windows version is packed with an older version of ccx or an 32-bit-version, which could suffer from a memory limit.
In the past I could calculate only small problems on a 32-bit windows-computer due to this problem.

You can identify the inp-file in the temporary folder and run the ccx.exe directly with this file in a command shell. It should give you more information about the problem. ccx needs the filename without the ".inp"

The attached document works on my system.

Ulrich

OS: Debian GNU/Linux 8.5 (jessie)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.8315 (Git)
Build type: Release
Branch: (losgelöst von d39bd49)
Hash: 77dec4b91dcf231e04ce428a90cf7ddff5fe085c
Python version: 2.7.9
Qt version: 4.8.6
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17

[easyw-fc]

OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.16.6704 (Git)
Build type: Release
Branch: releases/FreeCAD-0-16
Hash: 0c449d7e8f9b2b1fb93e3f8d1865e2f59d7ed253
Python version: 2.7.8
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17

Above are the version details. But today I downloaded similar version with thermo-mechanical attributes in which I'm facing the problem.
Here is the file.

Hi,
you can try the files at this thread
viewtopic.php?f=18&t=17066&p=135918#p135836

I used FC 0.17 7745 win10-64b to mesh and FC 0.17 8318 win10-64b to running Calculix
Maurice

[sgrogan]

The thermo-mechanical analysis is only available in the current development version, except you have a special patched version.
It could also be, that the windows version is packed with an older version of ccx or an 32-bit-version, which could suffer from a memory limit.
In the past I could calculate only small problems on a 32-bit windows-computer due to this problem.

ulrich1a is very perceptive. The 32-bit windows version comes bundled with a 32-bit cygwin build of calculix 2.6.x (I think originally compiled by jreigel) I'm working how to properly package this, but in the interim it's easy to get a more recent version yourself, and use the FEM preferences to point to it.
@bernd has kept up with the advances (search bernd+calculix) He's kept up and posted links to more advance calculix versions on both Win and Debian
viewtopic.php?f=18&t=14404&start=30#p135874

[easyw-fc]

The thermo-mechanical analysis is only available in the current development version, except you have a special patched version.
It could also be, that the windows version is packed with an older version of ccx or an 32-bit-version, which could suffer from a memory limit.
In the past I could calculate only small problems on a 32-bit windows-computer due to this problem.

ulrich1a is very perceptive. The 32-bit windows version comes bundled with a 32-bit cygwin build of calculix 2.6.x (I think originally compiled by jreigel) I'm working how to properly package this, but in the interim it's easy to get a more recent version yourself, and use the FEM preferences to point to it.
@bernd has kept up with the advances (search bernd+calculix) He's kept up and posted links to more advance calculix versions on both Win and Debian
viewtopic.php?f=18&t=14404&start=30#p135874

Hi,
FC 0.17 8324 win10-64b is using CalculiX v2.8p2

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ccx -v
This is version version 2.8p2

I tried to download a more recent windows version of CCX here
http://www.bconverged.com/data/content/ ... in_002.zip
and here
https://github.com/GeneralElectric/Calc ... in-x64.zip
but with both I get some errors during thermo mechanical analysis i.e. on this file
fem-simplyfied-v6-c.FCStd
(note: it has to be edited .inp file changing the second *BOUNDARY parameter to *CFLUX)

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***********************************************************
** Fixed temperature constraint applied
** written by write_constraints_temperature function
*CFLUX
FemConstraintTemperature,11,110.0

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Using CalculiX binary path from FEM preferences: C:/CalculiX-GE-OSS-2.10-win-x64/bin/ccx.exe
FemTools.setup_working_dir()  -->  self.working_dir = c:/temp
FemTools.setup_working_dir()  -->  self.working_dir = c:/temp
FemInputWriterCcx --> self.dir_name  -->  c:/temp
FemInputWriterCcx --> self.file_name  -->  c:/temp/Fusion003001002_Mesh.inp
('  ReferenceShape : ', 'Solid', ', ', 'Fusion003001001_solid', ', ', u'Fusion005 (Solid)', ' --> ', '')
('  ReferenceShape : ', 'Vertex', ', ', 'Fusion003001002', ', ', u'FusionAll', ' --> ', 'Vertex3')
('  ReferenceShape : ', 'Vertex', ', ', 'Fusion003001002', ', ', u'FusionAll', ' --> ', 'Vertex17')
editCalculixInputFile c:/temp/Fusion003001002_Mesh.inp
runCalculix
run CalculiX at: C:/CalculiX-GE-OSS-2.10-win-x64/bin/ccx.exe with: c:/temp/Fusion003001002_Mesh
calculixStarted()
PySide.QtCore.QProcess.ProcessState.Running
calculixFinished() 0
PySide.QtCore.QProcess.ProcessState.NotRunning
FemTools.setup_working_dir()  -->  self.working_dir = c:/temp
Traceback (most recent call last):
  File "C:\FreeCAD_0.17\Mod\Fem\_TaskPanelFemSolverCalculix.py", line 148, in calculixFinished
    fea.load_results()
  File "C:\FreeCAD_0.17\Mod\Fem\FemToolsCcx.py", line 199, in load_results
    self.load_results_ccxfrd()
  File "C:\FreeCAD_0.17\Mod\Fem\FemToolsCcx.py", line 210, in load_results_ccxfrd
    ccxFrdReader.importFrd(frd_result_file, self.analysis, result_name_prefix)
  File "C:\FreeCAD_0.17\Mod\Fem\ccxFrdReader.py", line 364, in importFrd
    m = readResult(filename)
  File "C:\FreeCAD_0.17\Mod\Fem\ccxFrdReader.py", line 82, in readResult
    nodes_z = float(line[37:49])
ValueError: invalid literal for float(): 1-1.60000E+0

Am I missing something or downloaded wrong version of CCX?
(with the bundled version my simulation goes fine)
thanks
Maurice

[easyw-fc]

Ok,
I found a way to get the latest Calculix 2.11 for windows that will work with FEM inside FreeCAD.
There is a Calculix Launcher for Windows (https://sourceforge.net/projects/calculixforwin)
https://sourceforge.net/projects/calcul ... p/download
This zip file includes in the bin folder
ccx210.exe (latest stable) and ccx211.exe (latest build) and related dlls for 32bit
both are working fine with FreeCAD 0.17 (tested on release 8405-64b)

Code: Select all

CalculiX Launcher is the collection of portable software, that includes:
­ CalculiX CCX (finite element solver);
­ CalculiX CGX (pre­processor and post­processor for CCX);
­ GMSH (simple parametric 3d program and mesher);
­ Mesh converters from UNV, MSH, Abaqus INP, VOL formats to CCX INP format.
Most of programs are statically linked or require some common libraries (Open­GL and
GTK2).
There is no special installation procedure.

The 32-bit windows version comes bundled with a 32-bit cygwin build of calculix 2.6.x (I think originally compiled by jreigel) I'm working how to properly package this, but in the interim it's easy to get a more recent version yourself, and use the FEM preferences to point to it.

May be it would be fine to update the old release of ccx for windows (ccx version 2.8p2) to this latest one in the FreeCAD dev packaging...
EDIT
Here there is also the source code that could be compiled in cygwin for 64bits
https://github.com/prool/ccx_prool/tree ... x_2.11/src

Maurice

[sgrogan]

May be it would be fine to update the old release of ccx for windows (ccx version 2.8p2) to this latest one in the FreeCAD dev packaging...
Maurice

Thanks for the link. See also here: viewtopic.php?f=18&t=17404#p137356
I very much want to improve the situation for the users, I also want to improve respect for the license. Your link gives me another example of how to bundle softwares with different licenses.

[easyw-fc]

May be it would be fine to update the old release of ccx for windows (ccx version 2.8p2) to this latest one in the FreeCAD dev packaging...
Maurice

Thanks for the link. See also here: viewtopic.php?f=18&t=17404#p137356
I very much want to improve the situation for the users, I also want to improve respect for the license. Your link gives me another example of how to bundle softwares with different licenses.

Hi @sgrogan
I managed to build cxx for 64bit in cygwin64
I did:

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userC@CAD ~
$ git clone git://github.com/prool/ccx_prool ../prool/PROJECTS/ccx_prool
$ cd ../prool/PROJECTS/ccx_prool

modified Makefile changing ccx_2.8p2 to ccx_2.11

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# Prool's makefile
all:
	cd ARPACK;sh ./fixhome.sh;make lib
	cd ..
	cd SPOOLES.2.2;make lib
	cd ..
	cd CalculiX/ccx_2.11/src;make
	cd ../../..
	cp CalculiX/ccx_2.11/src/ccx_2.11 ccx
clean:
	cd ARPACK;make clean
	cd ..
	cd SPOOLES.2.2;make clean
	cd ..
	cd CalculiX/ccx_2.11/src;make clean
	cd ../../..
	rm ccx

and then run

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userC@CAD /home/prool/PROJECTS/ccx_prool
$ make

added the required dlls

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 Directory of C:\Calculix-211-64

09/15/2016  12:21 PM    <DIR>          .
09/15/2016  12:21 PM    <DIR>          ..
09/15/2016  11:50 AM         6,450,816 ccx211-64.exe
06/13/2016  06:55 PM            71,187 cyggcc_s-seh-1.dll
06/13/2016  06:55 PM         1,185,299 cyggfortran-3.dll
06/13/2016  06:56 PM           107,539 cyggomp-1.dll
06/13/2016  06:56 PM           314,899 cygquadmath-0.dll
08/31/2016  02:32 PM         3,306,962 cygwin1.dll
09/15/2016  12:21 PM                 0 list.txt
               7 File(s)     11,436,702 bytes
               2 Dir(s)  366,546,243,584 bytes free

the result will be in

Code: Select all

\home\prool-ok\PROJECTS\ccx_prool\ccx

just renamed ccx to ccx211-64bin.exe;
tested Calculix cxx211-64bin.exe in FC 8434-64b and worked like a charm!
(and running much faster 62s vs 128s on my sample FC file)

[sgrogan]

tested Calculix cxx211-64bin.exe in FC 8434-64b and worked like a charm!
(and running much faster 62s vs 128s on my sample FC file)

Can you upload the binaries somewhere?
FreeCAD Window$ user compiling calculix Amazing