Newbie: Help with FEM. CalculiX finished with error 3221225477

About the development of the FEM module/workbench.

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whitear2
Posts: 2
Joined: Sun Sep 27, 2020 9:18 am

Newbie: Help with FEM. CalculiX finished with error 3221225477

Post by whitear2 »

Hello,
I am trying to assess the likely distortion of a structure. I have successfully completed the process with a simple tube. However, keeping getting an error when I attempt to simulate a more complex structure.

I suspect my problem may relate to mesh cell sizing, I have tried varying various meshing parameters without any luck. However, I am not sure that I fully understand the intended effect of the parameters I'm varying!

Any help would be appreciated.

Thanks.

OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4 (GitTag)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 980bf9060e28555fecd9e3462f68ca74007b70f8
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedKingdom (en_GB)
Attachments
THree_poles_with_analysis_1.FCStd
FreeCad file
(115.47 KiB) Downloaded 26 times
Error message
Error message
CalculiX_error.jpg (14.32 KiB) Viewed 922 times
Image of structure being analysed
Image of structure being analysed
Image_1a.jpg (501.73 KiB) Viewed 922 times
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Kunda1
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Re: Newbie: Help with FEM. CalculiX finished with error 3221225477

Post by Kunda1 »

Alone you go faster. Together we go farther
Please mark thread [Solved]
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Jee-Bee
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Location: Netherlands

Re: Newbie: Help with FEM. CalculiX finished with error 3221225477

Post by Jee-Bee »

I don't have checked in detail...
What i can see so fast is this
2020-09-29 07_46_03-FreeCAD 0.19.png
2020-09-29 07_46_03-FreeCAD 0.19.png (37.74 KiB) Viewed 842 times
You have a lot of intersections. Don't know if it is just graphical... (i prefer to use part as less as possible) at least i think you have to fix that all flat... beams / ... whatever it is called.
whitear2
Posts: 2
Joined: Sun Sep 27, 2020 9:18 am

Re: Newbie: Help with FEM. CalculiX finished with error 3221225477

Post by whitear2 »

Thank you for your replies. Sorry for taking so long to respond.

I have installed the latest version of FreeCAD from: https://github.com/FreeCAD/FreeCAD/rele ... g/0.19_pre

Simulating the original structure caused FreeCAD to crash.

I have redrawn the structure. During the simulation it finishes with an error as shown.

With regards "rough finishes" to the structure. I have to admit I am much more experienced using SolidWorks as a CAD tool. I am sure that I am drawing the FreeCAD part incorrectly - sorry about that. However, what I have done is tried to ensure that all of the elements of the part intersect and then Fuse the elements. On the assumption that FreeCAD would take that as a solid part.

Any thoughts or guidance would be much appreciated.



OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.22522 (Git)
Build type: Release
Branch: master
Hash: d8e476ef428017900dfe0f9359ba448503c216f9
Python version: 3.8.5
Qt version: 5.12.6
Coin version: 4.0.0
OCC version: 7.4.0
Locale: English/United Kingdom (en_GB)
Attachments
New_Three_pole_1a.FCStd
(37.48 KiB) Downloaded 16 times
Error_2_large.JPG
Error_2_large.JPG (667.5 KiB) Viewed 743 times
CalculiX_error_2.jpg
CalculiX_error_2.jpg (294.26 KiB) Viewed 743 times
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