FEM results rendering error

About the development of the FEM module/workbench.

Moderator: bernd

cadman
Posts: 1
Joined: Sat Sep 08, 2018 9:36 am

FEM results rendering error

Postby cadman » Sat Sep 08, 2018 11:00 am

Hi,

I'm new to the community and not sure if this was addressed before.

Downloaded FreeCAD today and Selected "Learn FEM 3D new solver example analysis"

and this showed up..
Screen Shot 2018-09-08 at 3.00.22 PM.png
Screen Shot 2018-09-08 at 3.00.22 PM.png (60.01 KiB) Viewed 503 times
My system details:

Model Name: MacBook Pro

Model Identifier: MacBookPro11,1
Processor Name: Intel Core i5
Processor Speed: 2.6 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 3 MB
Memory: 8 GB
Boot ROM Version: MBP111.0146.B00
SMC Version (system): 2.16f68
Serial Number (system): C02P4XPLG3QH
Hardware UUID: 4B07D252-8A10-5B9E-87C0-A7FFB96F071B


Seems like a rendering error to me. Pls. help
Jee-Bee
Posts: 1966
Joined: Tue Jun 16, 2015 10:32 am
Location: Netherlands

Re: FEM results rendering error

Postby Jee-Bee » Sat Sep 08, 2018 2:58 pm

it could also be a visibility issue.

can you try to set the backlight option on? in preferences>>display
Attachments
Screen Shot 2018-09-08 at 16.57.04.png
Screen Shot 2018-09-08 at 16.57.04.png (17.68 KiB) Viewed 496 times
polymer
Posts: 228
Joined: Fri Sep 12, 2014 8:49 am

Re: FEM results rendering error

Postby polymer » Wed Sep 12, 2018 1:05 pm

Maybe another error?
And, why I get Always "0" displacement, but stress is correct?
Attachments
2018-09-12_15-02-25.gif
2018-09-12_15-02-25.gif (823.88 KiB) Viewed 372 times
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bernd
Posts: 8470
Joined: Sun Sep 08, 2013 8:07 pm
Location: Zürich, Switzerland

Re: FEM results rendering error

Postby bernd » Thu Sep 13, 2018 9:54 am

- start FreeCAD
- open FEM 3D new solver example
- DoubleClick on SolverElmerResult object
- see screen, seams good to me.

- could you be more specific what exactly I need to do to reproduce your problem.


OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.14709 (Git)
Build type: Release
Branch: master
Hash: faad5ea27301cb7af393a25d317c406d3098bafe
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: German/Switzerland (de_CH)


screen.jpg
screen.jpg (128.19 KiB) Viewed 338 times
polymer
Posts: 228
Joined: Fri Sep 12, 2014 8:49 am

Re: FEM results rendering error

Postby polymer » Thu Sep 13, 2018 11:07 am

Okay, so please try:

- start FreeCAD
- open FEM 3D new solver example
- close the vtkOutputWindow (Picture attached)
- activate the analysis
- create result processing pipleline from calculix results
- doubleclick on the Pipeline
- choose Mode: Surface
- try some field and Vector Options and move the slider
Attachments
FreeCAD_2018-09-13_12-57-16.png
FreeCAD_2018-09-13_12-57-16.png (8.09 KiB) Viewed 329 times
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bernd
Posts: 8470
Joined: Sun Sep 08, 2013 8:07 pm
Location: Zürich, Switzerland

Re: FEM results rendering error

Postby bernd » Thu Sep 13, 2018 11:20 am

What version of FreeCAD do you run? Would you print your version info?

I have never seen a vtkOutputWindow!

Post in the regard of your problem will follow ...
polymer
Posts: 228
Joined: Fri Sep 12, 2014 8:49 am

Re: FEM results rendering error

Postby polymer » Thu Sep 13, 2018 11:22 am

bernd wrote:
Thu Sep 13, 2018 11:20 am
What version of FreeCAD do you run? Would you print your version info?

I have never seen a vtkOutputWindow!

Post in the regard of your problem will follow ...
Sorry, here it is:

Code: Select all

OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.14709 (Git)
Build type: Release
Branch: master
Hash: faad5ea27301cb7af393a25d317c406d3098bafe
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)
User avatar
bernd
Posts: 8470
Joined: Sun Sep 08, 2013 8:07 pm
Location: Zürich, Switzerland

Re: FEM results rendering error

Postby bernd » Thu Sep 13, 2018 11:28 am

There is indeed a problem with diggits. It is not 0 it is 0.087 mm means 1000 times smaller than it should be ... See numbers on the color bar on the right. If a warp factor is added the problem is seen better because on needs a huge warp factor so see some warp. Attached two screen. I try to have a look at this.

bernd


screen.jpg
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screen2.jpg
screen2.jpg (217.08 KiB) Viewed 321 times
User avatar
bernd
Posts: 8470
Joined: Sun Sep 08, 2013 8:07 pm
Location: Zürich, Switzerland

Re: FEM results rendering error

Postby bernd » Mon Sep 17, 2018 11:41 am