Section Fiber Stiffness Recorder

[emrecarter]

Hi,

I modelled a 2-story 2-bay frame with fiber section. I used ''recorder'' command in order to understand how stiffness of fiber sections changes during nonlinear time history analysis. However, the result file consists of 4 columns and I could not understand the results. Please, can you explain to me what column gives which response quantity?

Command: recorder Element -file Data/StiffCol.out -time -ele 2 section 1 stiffness;