Hi Peter,

The problem with the license was because the university updated Ansys to 19.1. I made some changes:

The radius was modified, add weld in the radius of the brace:

I changed the restrictions for the model that is the fourth part and I changed it by symmetry region.

The material of the weld is bilinear isotropic hardening: 

But the model throw the following results:

- The solver engine was unable to converge on a solution for the nonlinear problem as constrained.  Please see the Troubleshooting section of the Help System for more information.

- The solution failed to solve completely at all time points. Restart points are available to continue the analysis. 

- The unconverged solution (identified as Substep 999999) is output for analysis debug purposes. Results at this time should not be used for any other purpose.

- Although the solution failed to solve completely at all time points, partial results at some points have been able to be solved.  Refer to Troubleshooting in the Help System for more details.

Please, how could the model improve?