Nonlinear Analysis of Thin-Walled Structures Using One Element Per Member

摘要

The paper presents the derivation of a deformation stiffness matrix for asymmetric thin-walled beam-column element. The matrix is function of the element deformations. It incorporates the coupling between the axial stretching and the lateral and torsional deformations. The stiffness matrices for thin-walled beam-column element to analyze large deflection behavior of space frames comprising members in which the influence of the sectorial warping in the section can be neglected. The proposed method is suitable for analyzing nonlinear behavior of large space frames, such as a transmission tower.