CalculiX – fatigue.pro

Wind turbine hub also rotates in Calculix

Animated deformation plot in Calculix (cgx)

Now I reused the full Hexaeder mesh (Hex20 & Wedge15 only) from Ansys in PrePoMax to make some comparisons. In my post “Wind turbine hub calculation in Ansys” you find more information of the mesh…

Moving load with Julia in PrePoMax

Force distribution calculated and displayed in Julia and deformation plot displayed in PrePoMax (calculated with CalculiX)

Some weeks ago I prepared a simulation of a wheel with moving load in Ansys. And I would like to calculate the improved Ansys mesh in PrePoMax as well. So I translated the mesh from…

I went into the mesh

My picture meshed from fine to coarse with Gmsh (upper) and calculated in Calculix (lower)

A post from Diego Magela Lemos on LinkedIn got me. He used the great work from Prof. Christophe Geuzaine to create a mesh from a picture in Gmsh. I already used Gmsh before to convert…

A chain is only as strong as its weakest link

Bicycle chain with "von Mises stress" results

Some month ago I prepared a geometry from a rest of a bicycle chain in FreeCAD. I used only a caliper to measure the dimensions. Because I really wanted to test the nonlinear contact in…

Happy Easter

Easter egg in FreeCAD FEM workbench - Displacement of an Normal mode rotating

I have found an Easter egg in FreeCAD. And thanks to FEM workbench in FreeCAD, the egg is even colorful. It was not so easy to find, because who actually knows how an egg is…

Steel wheel in PrePoMax

Steel wheel with "von Mises stress" results

Keep the wheels turning. A steel wheel with shell elements has been on my list for a long time. In the past, I always had only aluminum rims with solid elements in the simulation (see…

Wind turbine hub calculation in Fatlab (PrePoMax results)

Fatigue utilization with critical plane (CP) approach and Markov matrix

Finally, the CalculiX interface in Fatlab now works also for more complex results from PrePoMax. The following video shows a complete fatigue calculation run of a simple hub in Fatlab with PrePoMax (Calculix) results. I…

FreeCAD FEM results in Fatlab

Fatigue utilization and Markov matrix for SAE keyhole with variable amplitude loading

If you have a simple model and load you can directly use FreeCAD FEM workbench results in Fatlab. In the previous post I had introduced the newly implemented interface to use CalculiX results in Fatlab…

PrePoMax / CalculiX results 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…

Wind turbine hub calculation in PrePoMax

Wind turbine hub with stress results in PrePoMax

I would like to calculate the finite element stress of a 5MW wind turbine hub for a fatigue calculation in Fatlab and I came across PrePoMax. PrePoMax is an open-source pre- and postprocessor for an…