Lateral-torsional buckling analysis of thin-walled beams including shear and pre-buckling deformation effects |
| |
| Authors: | R. Emre Erkmen Mario M. Attard |
| |
| Affiliation: | a School of Civil and Environmental Engineering, University of Technology, Sydney, NSW 2007, Australia
b Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia |
| |
| Abstract: | In this paper, lateral-torsional buckling behavior of open-section thin-walled beams is investigated based on a geometrically nonlinear formulation, which considers the effects of shear deformations. A finite element numerical solution along with an incremental-iterative solution procedure is adopted to trace the pre-buckling as well as the post-buckling equilibrium paths. Formulation is applicable to a general type of open-section and load position effects are also included. Numerical results are validated through comparisons with experimental results and those based on other formulations presented in the literature. Comparisons have also been made between the results based on fully nonlinear analysis and linearized buckling analysis in order to illustrate the effects of pre-buckling deformations as well as the shear deformations on the buckling load predictions. Examples illustrate the influence of beam slenderness and moment gradient on the effects of pre-buckling deformations in predicting bucking loads. |
| |
| Keywords: | Shear deformation Pre-buckling deformation Lateral-torsional buckling |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
