Importing Equivalent Plastic Strain

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

Postby sodelo » Thu Mar 16, 2017 8:05 am

Correction to the importation of PEEQ. Only the last time increment was taken into account.
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importCcxFrdResults.py.txt
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bernd
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Re: Importing Equivalent Plastic Strain

Postby bernd » Fri Mar 17, 2017 10:44 am

Is it really just these addition:. https://github.com/berndhahnebach/FreeC ... ed8e879053 ?

do yo have some simple file to test with?
sodelo
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Re: Importing Equivalent Plastic Strain

Postby sodelo » Fri Mar 17, 2017 7:45 pm

Yes, these are the only changes.

Here is a simple example.

Please note I have chosen user defined time step control since I wanted to be sure results would be available for several time increments.
However, I suggest to remove the "DIRECT" command since in that case, the automatic time step control is deactivated, which is really a pity because in non linear analyses there may be very large varations of the necessary time increments (large when the response is linear and small when there are strong non linearities).

*STATIC, DIRECT
0.1, 1.

For example, if I keep DIRECT in this example, the computation fails to converge and there is no result.
DIRECT should not be the default behaviour.

BR

Sodelo
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bernd
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Re: Importing Equivalent Plastic Strain

Postby bernd » Mon Mar 20, 2017 9:10 am

@sodelo:

it is about the property "Iterations User Defined Incrementations"

means there are three choices from your point of view:
- nothing
- no Direct, but user defined time step length
- Direct and user defined time step length

at the moment there are only two:
- nothing
- Direct and user defined time step length

See https://github.com/FreeCAD/FreeCAD/blob ... #L712-L736 You may make a better proposal

I'm no good at all the different possibilities of CalxuliX. I mostly need linear static analysis ...
sodelo
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Joined: Tue Jan 24, 2017 9:20 am

Re: Importing Equivalent Plastic Strain

Postby sodelo » Mon Mar 20, 2017 12:38 pm

Correct.