STEP-Import with missing surfaces

[FEAnalyst]

@SergioP1975

I was able to get an usable mesh in Salome, the trick is creating a first order tets, and then switch to second order with the middle node in the middle of the edge (and not in CAD surface), to avoid the non jacobian errors.

Is there no option such as “Second order linear” (called “Midside nodes on geometry” in PrePoMax) in Salome ? This should automatically generate second order elements by linear interpolation. FreeCAD has it for both Gmsh and Netgen and it’s indeed the best way to avoid negative jacobians: https://wiki.freecad.org/FEM_Geometry_Preparation_and_Meshing#Negative_Jacobians

@SergioP1975

delete the surface part

Or follow the steps from here: Importing meshes from Gmsh and Salome_Meca

@SergioP1975

A last point, how could we show the model in (scaled) deformated state, but twisted and not increasing the movil diameter?

Well, Nlgeom should get rid of it.