Author(s)

M.Z Kabir, S.H. Mousavi

Abstract

Non-linear behaviour of thin-walled open section composite beams in lateral stability M.Z. Kabir, S.H. Mousavi Department of Civil Engineering, AmirKabir University of Technology, Tehran, Iran Abstract An analytical study along with a numerical investigation is conducted to determine the lateral buckling strength of thin-walled open-section I shape composite beams. Based on Vlasov-type linear hypothesis beam stiffness coefficients, which account for a cross section geometry and material anisotropy of the section, are obtained. In this study the axial and bending coupling terms (A^,A^,D^,D^) and the coupling between bending and twisting terms (B. ), which refer to anisotropic structural behaviour of the beam are also considered. In order to drive a better estimate of load capacity of composite beams, the transverse shear strain effect on the lateral buckling is included in calculations. To verify the analytical manipulations, the finite element software, ANSYS,

Keywords