I have designed a cable-stayed bridge that failed due to flooding in Greece. Here is a picture of the model:
When I run a linear analysis (after combining some loads), everything works fine. However, since the structure experiences large deformations, I need to perform a nonlinear analysis, and that’s when the problems start.
When I run a 2nd Order / P-Δ analysis, I get the following error:
When I run a full geometric nonlinear analysis, the program goes through more iterations but ends up giving me the same error. It also shows the following message:
I have allow more iterations, doesn’t change anything, and I have to permit a tolerance bigger than 75kN to have a non error so this doesn’t work either
Is this issue fixable? Based on the supports and springs I have defined, I believe a solution should exist, especially since I modeled the same bridge in another program using the same setup and it worked.
Thanks you in advance for your time!