Nonlinear Frame Analysis by Finite Element Methods

Abstract

A review of the basic concepts involved when constructing nonlinear load‐deflection curves of framed structures by the finite element method is presented. The study is limited to the geometrically nonlinear behavior of elastic structures. Three different procedures are considered: the linear incremental method, the nonlinear incremental method, and the direct method. For each method the governing equations are derived, and the procedure used to plot the load‐deflection curve is outlined.