dml
Hello,
it says that your definition of the model in AFFE_MODELE does not include the group 'Arete'. I came over this with a lazy trick, that is assigning TOUT to '3D' in AFFE_MODELE:
Now this error goes away, but the solution is not pretty (it could cause other problems, because I do not fully know your mesh). Code_Aster does the following in assigning the elements (in fact this is done in some other definitions too): TOUT assigns 3D to all in the first line, but the second line overwrites what is assigned in TOUT at the groups defined in the second line (always from top to bottom). This can also be done AFFE_MATERIAU for example (assign one material to all 'TOUT' and then in the following line overwrite certain groups with a different material. Handy, if a lot of groups are present).
When I ran this, I got a different error:
This comes from the group 'Suspentes', they are 4 nodes that not seem to be connected to anything, they are 4 of the 5 free nodes in your mesh (I don't know where the 5th is). I only noticed this, because if I remove all 5 free nodes, the 'Suspentes' group disappears!
Since they are not connected to anything, you'll need to do that (I suppose they should be connected the the surf next to them, at the bottom of this beam). So you either put them into the mesh (do a partition in the geometry and and mesh these 4 points with it) or you put 0D elements at these nodes and do a LIAISON_SOLIDE with whatever they should be connected to. A similar procedure can be found in the recent therad "FORCE_ARETE applying Moment", but for a different reason (there a moment is applied to the 0D element, to circumvent a FORCE_ARETE on a circle, which does not work).
So there's a bit more to do and find out (where's the 5th free/orphan node?),
Mario.