Reference Type:  Journal Article
Record Number: 1
Author: Lee , K. S. and Han, S. E.
Year: 2011
Title: Semi-rigid elasto-plastic post buckling analysis of a space frame with finite rotation
Journal: Advanced Steel Construction
Volume: 7
Issue: 3
Pages: 28
Start Page: 274
Short Title: Semi-rigid elasto-plastic post buckling analysis of a space frame with finite rotation
DOI: 10.18057/IJASC.2011.7.3.5
Keywords: Space frame, Large deformation, Beam-column, Plastic hinge, Semi-rigid
Abstract: In this study, large-deformation and small-strain elasto-plastic analysis of space frames with symmetric cross sections and semi-rigid connections are presented. The effect of axial forces on the bending moment and lateral buckling are included. However, axial-torsional and warping effects are omitted. The Eulerian equations for a beam-column with finite rotation taking into account bowing effects are adopted for an elastic system and are extended to an inelastic system with a plastic hinge concept. The derived tangent stiffness matrix is asymmetric due to the finite rotation. The joint connection elements were introduced for semi-rigidity using a static condensation technique. The arc-length method was applied to trace the post-buckling range of elastic and elasto-plastic problems with semi-rigid connections. Nonlinear buckling and elasto-plastic collapse analyses were carried out for the proposed space frame to demonstrate the potential of the developed method in terms of accuracy and efficiency.
Author Address: Professor, Department of Architectural Engineering, Inha University, 253 Yonghyundong, Nam-gu, Incheon, 402-751, South Korea