SAP Pushover / Nonlinear Analysis not converging
SAP Pushover / Nonlinear Analysis not converging
(OP)
Hi,
It is my first post here, so I would like to thank you all for the answers I have already found here, and for the ones to come!
I am running across a problem while doing a nonlinear analysis on SAP2000. I am running the NL because I have tension-only bracing. I have different Load Combinations based on NL Load Cases.
Using the Multi-Thread solver, the analysis converges very quickly for the Load Cases based on the N/S direction of the wind. The combinations based on the E/W direction of wind do not converge at all...
The building is a simple 1950s steel warehouse, with one-way trusses.
Has anyone ever run across this?
Any tips?
thanks a lot,
Thomas.
It is my first post here, so I would like to thank you all for the answers I have already found here, and for the ones to come!
I am running across a problem while doing a nonlinear analysis on SAP2000. I am running the NL because I have tension-only bracing. I have different Load Combinations based on NL Load Cases.
Using the Multi-Thread solver, the analysis converges very quickly for the Load Cases based on the N/S direction of the wind. The combinations based on the E/W direction of wind do not converge at all...
The building is a simple 1950s steel warehouse, with one-way trusses.
Has anyone ever run across this?
Any tips?
thanks a lot,
Thomas.





RE: SAP Pushover / Nonlinear Analysis not converging
RE: SAP Pushover / Nonlinear Analysis not converging
Actually, I eventually realized that I had a few instabilities in the model (due to several changes etc.).
I found them by re-running the model on a Linear Load Case with the standard solver. Then I turned back the multi-threaded solver, and the nonlinear Load Cases on, and it worked perfectly.
Have a good day.
Thomas.