P-Delta

[samcivil]

hello everybody!
how can i model P-Delta effect in OpenSEES?

[fmk]

if you want the effect on columns being modeled use a pDelta transformation for the column elements. if you want to model a PDellta columns create the columns using the afformentioned transformations with elements of negligible flexural stiffness, and tie these vertical columns to frame with equalDOF commands