Bouc Wen Model

[moharrami]

Dear all,

I modeled a single story one bay building in 3d with opensees. I defined the nonlinearity properties of a section with bouc wen model; I changed the post hardening ratio (alpha) value but it seems the program is not sensitive to it. I also chose Elcentro ground motion for the dynamic analysis but I do not know why program just shows the response after 1.72 sec of record I would appreciate if anyone could help me.

[fmk]

sorry i missed the post, the reason is obviously because the analysis failed at 1.72 sec.