It was an unknown error. The materials are:

- Bolt: ASTM A325

- Beam and column: ASTM A572

- Plates: ASTM A36.

Yes, I have large deformation effects ON. Oh! I have not looked at the Newton-Raphson residuals, I will read the article, thank you.

But the problem was that I was applying the load in a edge of the solid parts, so I applyed a pressure on the beam flange with the same value of the crosssection (line pressure) and it converged. The results are OK, now I posted another topic: Symmetry.


Thank you, very much!!!