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 meshes and so I could not resist to mesh my own image. And I started thinking about calculating it with FEM.
In Gmsh you can directly Export a mesh as “Abaqus INP (*.inp)” and that is compatible to Calculix / PrePoMax. In PrePoMax you can directly import the mesh and work directly on the mesh. I tried a quad mesh.
I used a Concentrated Force to add a force on every node. So finer meshed details (dark areas) get more force and coarser areas get lesser force in Z direction. The calculated deformation in Z direction looks like an artwork in PrePoMax.
I have not yet found a way to display and save the results automatically in PrePoMax. So I learned something about CalculiX GraphiX (cgx) to get some plots for a new animation direct from the Calculix frd result file.
I could have somehow calculated a fatigue utilization. But that doesn’t make any sense here. But how much fun can you have with only free and opensource tools.