Frequency analysis - ccx.exe stopped working, errors

[NewJoker]

Hi,

I keep having problems with frequency and buckling analyses in different FreeCAD versions and on different computers. Here’s the previous (still unsolved) issue: https://forum.freecadweb.org/viewtopic. ... 43#p530143

Currently, when I try to run any frequency analysis in 0.19, I get the following error:

Code: Select all

CalculiX finished with error 3228369022.

and Windows message that ccx.exe stopped working.

In the case of "Box Analysis Frequency" example I get this message:

Code: Select all

FEM: No nodes found in Frd file.
Problem on frd file import. No nodes found in frd file.

and again "ccx.exe stopped working".

In 0.20 FreeCAD just hangs and gives a few lines of red colored output (the same stuff as in the linked thread) when I run frequency analysis on this machine. So the behavior is the same as in the case of a buckling simulation.


OS: Windows 10 Version 2009
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24291 (Git)
Build type: Release
Branch: releases/FreeCAD-0-19
Hash: 7b5e18a0759de778b74d3a5c17eba9cb815035ac
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.0
Locale: Polish/Poland (pl_PL)

[johnwang]

https://forum.freecadweb.org/viewtopic.php?f=18&t=61903

[NewJoker]

I don’t use Pardiso. Just a default executable included in FreeCAD files (and that should be Spooles, as far as I know).

[johnwang]

I don’t use Pardiso. Just a default executable included in FreeCAD files (and that should be Spooles, as far as I know).

Maybe not. Check your log message.

log.jpg (61.84 KiB) Viewed 2726 times

[NewJoker]

I checked those messages. Unfortunately, they don’t mention whether it’s Spooles or Pardiso. They only provide the release number - 2.17.

[johnwang]

or the message generated by FC FEM WB. Any mention?
https://forum.freecadweb.org/viewtopic. ... 03#p530382

[NewJoker]

or the message generated by FC FEM WB. Any mention?
https://forum.freecadweb.org/viewtopic. ... 03#p530382

No mention there as well. But the frequency analysis works when I replace the default ccx.exe in FreeCAD 0.19 directory with ccx_SPOOLES downloaded directly from CalculiX’es website. So either this default binary is broken or it uses Pardiso instead of Spooles. It seems that different ccx binary should be provided as the deafult one in FreeCAD.

[johnwang]

You can copy a case file into FreeCAD bin folder and solve in a DOS terminal command line. It will show more message.
Or copy that ccx.exe into where your case is.

[NewJoker]

You can copy a case file into FreeCAD bin folder and solve in a DOS terminal command line. It will show more message.
Or copy that ccx.exe into where your case is.

Apparently, it’s Spooles because it says:

Code: Select all

Factoring the system of equations using the symmetric spooles solver
Using up to 1 cpu(s) for spooles.

And then it stops working, just like in FreeCAD.

[johnwang]

And then it stops working, just like in FreeCAD.

Because it solves the first part with Spooles, then switched to use Pardiso for the second part.
https://forum.freecadweb.org/viewtopic. ... 10#p531161

I haven't tried with the Frequency problem.