17 December 2018
- Last edited 17 December 2018
The Warning is telling you to click on Analysis Settings, and on the line Large Deflection, to change the setting from No to Yes, then solve the model again.
The solver uses the small rotation assumption to give faster answers to models where the small rotation assumption is valid.
By turning on Large Deflection, you tell the solver to iterate, updating the position of the nodes as they deflect, recomputing the stiffness matrix and take longer to show a result, but a result that is correct for large rotations such as 30 degrees.
There is no harm in turning on Large Deflection if you are not sure, you will just wait a little longer for the solution to complete.