PrePoMax / CalculiX results in Fatlab

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PrePoMax CalculiX results interface in Fatlab
PrePoMax CalculiX mesh model an stress results imported in Fatlab

I show my first implementation of a model and unit stress interface for PrePoMax / CalculiX results in Fatlab. Now I am able to import the calculated FEM mesh model from the CalculiX ccx input file (*.inp) into Fatlab. You find the FEM calculation and the model here Wind turbine hub calculation in PrePoMax.

PrePoMax CalculiX FEM wtg hub mesh imported in Fatlab
PrePoMax / CalculiX mesh imported in Fatlab

In the “Setup model” window is an new option for the model file format added called “CalculiX(beta)”. That can load the node locations and elements from a CalculiX ccx input file (*.inp). The for ccx defined solid sections are used in the “View” section to have selectable parts in the “Show parts” list.
And it is possible to load CalculiX ccx result files (*.frd, ASCII) to get the FE stress from the unit loads for each component.

Setup model window in Fatlab with CalculiX inp and frd file interface
New Model Format “CalculiX(beta)” and new FE stress file format “ccx .frd result file” added

If we compare the stress plot, then the plot looks the same as in the PrePoMax calculation.

Stress plot of a wind generator hub in Fatlab
Stress plot with the same stress than in PrePoMax calculation
Stress plot of a wind generator hub with FE mesh in Fatlab
Stress plot of hub only with mesh (Parts selected in the “Show parts” list)

It is not limited to PrePoMax files. I also tested it with files from the FreeCAD FEM workbench, because FreeCAD FEM uses CalculiX as default standard solver. This example was made for the Happy New Year post.

Number 2023 with mesh and stress in a Fatlab plot
FreeCAD (CalculiX) example in Fatlab

I still need some improvements in speed, model handling and stress file handling, but it is already usable. Stay tuned!