Hey there 
!
I’m the author of the Python package FElupe. Is anyone interested in a tutorial on how to mesh a rubber-metal part in PrePoMax, export the mesh / meshes and run the simulation in FElupe?
FElupe is good in handling nearly-incompressible materials, which is not available in Calculix. Unfortunately, contact methods are not available (yet).
I know it’s a bit off topic but if there is any interest just let me know!