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by makkemal
Wed Oct 24, 2018 7:46 pm
Forum: FEM
Topic: Modify stiffness matrix for FE Analysis
Replies: 3
Views: 369

Re: Modify stiffness matrix for FE Analysis

In CalCulix this is done in FORTRAN via user subroutine
http://www.feacluster.com/CalculiX/ccx_ ... de344.html
by makkemal
Wed Oct 10, 2018 11:00 am
Forum: FEM
Topic: Fem constraint contact
Replies: 143
Views: 21105

Re: Fem constraint contact

Civil engineers ..... :lol:
I do not get the point of this. What is this feature useful for?
https://www.ansys.com/products/structur ... assemblies
by makkemal
Wed Oct 10, 2018 10:57 am
Forum: FEM
Topic: Plotting results per element
Replies: 14
Views: 903

Re: Plotting results per element

For this we would need to plot them in integration points of the FEM element?
i think averaging integration point per element would be sufficient. This is how most commercial packages do it.
by makkemal
Wed Oct 10, 2018 10:31 am
Forum: FEM
Topic: Fem constraint contact
Replies: 143
Views: 21105

Re: Fem constraint contact

So I found the problem although Face index start at 0 the Face numbers on start at 1 Fixed now :D So currently I step through compound and find closest faces for the whole compound Now the question is if I have a face how do I check that the closest face is not part of the same sub solid ? The compo...
by makkemal
Fri Oct 05, 2018 9:57 am
Forum: FEM
Topic: Plotting results per element
Replies: 14
Views: 903

Re: Plotting results per element

I use custum coding in calculix to create state variables.(tranfering some information) Then in the input deck I have the following outputs specified *EL PRINT , ELSET=Eall S,SDV,Evol The reading of SDV and Evol is added to the Datfilereader in this branch https://github.com/makkemal/FreeCAD/tree/sd...
by makkemal
Fri Oct 05, 2018 9:42 am
Forum: FEM
Topic: Fem constraint contact
Replies: 143
Views: 21105

Re: Fem constraint contact

OS: Windows 10 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.14893 (Git) Build type: Release Branch: master Hash: b8c50dc0f93410d1a8009a162385b50107c301ec Python version: 2.7.8 Qt version: 4.8.7 Coin version: 4.0.0a OCC version: 7.0.0 Locale: English/SouthAfrica (en_ZA) Only fa...
by makkemal
Wed Oct 03, 2018 12:17 pm
Forum: FEM
Topic: Fem constraint contact
Replies: 143
Views: 21105

Re: Fem constraint contact

I am working on auto contact feature I get the following error when applying the Faces with command App::Document::_RecomputeFeature(): Unknown exception in Feature "FemConstraintContact" thrown I cant figure out what is going wrong ? obj.References = [(geom,face1), (geom,face2)] Full script below i...
by makkemal
Wed Sep 19, 2018 8:59 am
Forum: FEM
Topic: Plotting results per element
Replies: 14
Views: 903

Re: Plotting results per element

I have done some updates on the ccxdatfile reader https://github.com/makkemal/FreeCAD/tree/sdv_results_read This was mostly for own use Since Element plots don't exist I did not update other readings functions. Here is some code that changes element volumes to nodal values and assigns it to temperat...
by makkemal
Fri Sep 14, 2018 7:06 am
Forum: FEM
Topic: Plotting results per element
Replies: 14
Views: 903

Re: Plotting results per element

Thanks very useful info :D
by makkemal
Wed Sep 12, 2018 2:55 pm
Forum: FEM
Topic: Plotting results per element
Replies: 14
Views: 903

Re: Plotting results per element

How do I get the element numbers and nodes associated from the Resultmesh ?
In the python console to translate it to the element average ?

Thing moved around a bit since I last looked at this :D

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