The moment-curvature plot in SAP2000 is based on the material stress-strain plot of caltran (along with its material FoS). I would like to understand the detailed calculation to obtain the plot manually. Please suggest the relevant document.
SAP2000 permits to define hinges from one's moment-curvature analysis and for that reason I didn't use any table from FEMA or ATC. In case of columns and its P-M3 user defined hinges controlled by displacement, I didn't find how SAP2000 defines yield moment curvature for columns in his moment-curvature diagram
Yes Picasso Kumar Debnath, we can use user defined hinges using section's PMM and corresponding M-Phi. But, I am not sure if my manually generated M-phi plots are correct. I just want to compare that. If i can understand the background calculation of SAP2000, I can define the hinges correctly.