I analysed a heavy wall pipe with FEM work bench.
With this set up I aim to create uniform bending moment in the center span. This is just a first test before I try to analyse composite pipe-in-pipe assemblies. The work flow of creating Booleanfragments, Compoundfilter, etc. etc. I explain in a Tutorial, here:
https://www.freecadweb.org/wiki/FEM_She ... site_Block
So far the results are encouraging.
The displacements are within 2% of what I get with simple beam theory.
Please forgive me, but I still use Paraview to get the really glossy pictures.
Above picture shows uniform bending stresses in the central span ... hooray ... and next picture shows stresses that are in line with bending theory.
Next challenge, real pipe-in-pipe on this virtual test bench
As always, comments and suggestions welcome