Mohr Coulomb or Reinforcement density field not available

About the development of the FEM module/workbench.

Moderator: bernd

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hhassey
Posts: 160
Joined: Thu Jun 04, 2015 8:01 pm
Location: Ensenada, Mexico

Mohr Coulomb or Reinforcement density field not available

Post by hhassey » Fri Jul 24, 2020 8:43 pm

System:
OS: Debian GNU/Linux 10 (buster) (GNOME/gnome)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.22111 (Git)
Build type: Release
Branch: master
Hash: cb2099aa6bb287a8d7843eb70684cce79bdef26b
Python version: 3.7.3
Qt version: 5.11.3
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)

First of all, Congratulations on the amazing software that FreeCAD has become.
I have been playing with FreeCAD trying to use FEM workbench. (I have been using Code-Aster for years) But have not been able to display the mohr-coulomb criteria or reiforcement for concrete.

here is a screenshot
deleteme.png
deleteme.png (315.33 KiB) Viewed 519 times
As you can see on the pipeline there are no such fields.

Also is it possible to change the scale range to a custom one?

Thanks in advance
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bernd
Posts: 10956
Joined: Sun Sep 08, 2013 8:07 pm
Location: Zürich, Switzerland

Re: Mohr Coulomb or Reinforcement density field not available

Post by bernd » Fri Jul 24, 2020 8:52 pm

double click on the coloured scale.

For getting special reinforced results you need to add a reinforced material.

Try the example 2D rc wall. Menue utilities, examples ... tha choose this example, run it.

Would be great if you could give some feed back.
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hhassey
Posts: 160
Joined: Thu Jun 04, 2015 8:01 pm
Location: Ensenada, Mexico

Re: Mohr Coulomb or Reinforcement density field not available

Post by hhassey » Fri Jul 24, 2020 9:30 pm

Thanks for the quick answer. Sure I will give feed back.
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hhassey
Posts: 160
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Location: Ensenada, Mexico

Re: Mohr Coulomb or Reinforcement density field not available

Post by hhassey » Sun Jul 26, 2020 10:20 pm

After changing the material to a reinforced material and defining angle of friction It worked perfectly. I will try to make an example with Code-Aster and compare. Stay tuned.
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bernd
Posts: 10956
Joined: Sun Sep 08, 2013 8:07 pm
Location: Zürich, Switzerland

Re: Mohr Coulomb or Reinforcement density field not available

Post by bernd » Mon Jul 27, 2020 8:37 am

hhassey wrote:
Sun Jul 26, 2020 10:20 pm
After changing the material to a reinforced material and defining angle of friction It worked perfectly. I will try to make an example with Code-Aster and compare. Stay tuned.
very cool!


BTW: the reinforment example from FreeCAD FEM (RC Wall 2D) is some standard example from fib (AFAIR). Means this woul fit perfectly for such a comparison. Load the file with:
- start FreeCAD
- change to FEM
- click Menu utilities -> fem examples
- Materials -> reinforced -> RC Wall 2D

mor informations https://forum.freecadweb.org/viewtopic. ... 90#p296521 and the pages before and later
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hhassey
Posts: 160
Joined: Thu Jun 04, 2015 8:01 pm
Location: Ensenada, Mexico

Re: Mohr Coulomb or Reinforcement density field not available

Post by hhassey » Thu Aug 06, 2020 2:15 am

The example comparing FreeCAD results to Code-Aster is here https://forum.freecadweb.org/viewtopic.php?f=18&t=49264
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