Importing Equivalent Plastic Strain

About the development of the FEM module/workbench.
sodelo
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Re: Importing Equivalent Plastic Strain

Postby sodelo » Sun Feb 19, 2017 9:23 pm

I have not (yet) run your example but is there something strange?
The beam is bended. Maximal stress and strains are on both surfaces (top and bottom). Plasticity is reached at these locations while the core is still elastic.
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bernd
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Re: Importing Equivalent Plastic Strain

Postby bernd » Sun Feb 19, 2017 9:28 pm

sodelo wrote:I have not (yet) run your example but is there something strange?
The beam is bended. Maximal stress and strains are on both surfaces (top and bottom). Plasticity is reached at these locations while the core is still elastic.
No nothing strange just some finer mesh even inside the body and not only on the surface.
sodelo
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Re: Importing Equivalent Plastic Strain

Postby sodelo » Sun Feb 19, 2017 9:34 pm

With tetrahedra, having a fine enough mesh often means having a hell of a big mesh :?
With hexahedra, 1st they are more accurate and second, you can cheat and get your fine elements only in the direction you are interested in.
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bernd
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Re: Importing Equivalent Plastic Strain

Postby bernd » Sun Feb 19, 2017 9:45 pm

sodelo wrote:With tetrahedra, having a fine enough mesh often means having a hell of a big mesh :?
With hexahedra, 1st they are more accurate and second, you can cheat and get your fine elements only in the direction you are interested in.
Do you know GMSH? Do you know how to make hex elements in GMSH? I have not been successful with this.
sodelo
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Re: Importing Equivalent Plastic Strain

Postby sodelo » Sun Feb 19, 2017 10:00 pm

I have used it in the past (only for a particular geometry) and got a rather nice hexahadra-based mesh.
I need to find the file and send it to you.
However I remember the geometry has to be defined with the Gmsh tools in that case and all the partitioning as well.
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bernd
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Re: Importing Equivalent Plastic Strain

Postby bernd » Tue Feb 21, 2017 5:21 pm

It's in master ...
sodelo
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Re: Importing Equivalent Plastic Strain

Postby sodelo » Tue Feb 21, 2017 9:48 pm

Capture du 2017-02-21 22-42-46.png
Capture du 2017-02-21 22-42-46.png (367.62 KiB) Viewed 259 times


Sorry for the strange location of the radio button. This is the first time I use QtDesigner.
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TaskPanelShowResult.ui.txt
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bernd
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Re: Importing Equivalent Plastic Strain

Postby bernd » Wed Feb 22, 2017 6:17 am

sodelo wrote:Sorry for the strange location of the radio button. This is the first time I use QtDesigner.
fixed

https://github.com/berndhahnebach/FreeC ... empestrain

https://github.com/berndhahnebach/FreeC ... it/04f7156

will be included in my next PR ...
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bernd
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Re: Importing Equivalent Plastic Strain

Postby bernd » Fri Feb 24, 2017 7:22 am

added Peeq to vtk output too: https://github.com/berndhahnebach/FreeC ... its/femdev

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sodelo
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Re: Importing Equivalent Plastic Strain

Postby sodelo » Fri Feb 24, 2017 8:45 am

:D