Lateral-Torsional Buckling of C-Beams with Varying Inertia

2018 5th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造;土木建筑工程

Mascolo, I.^1 ; Modano, M.^2 ; Amendola, A.^1 ; Fraternali, F.^1

Department of Civil Engineering, University of Salerno, Italy^1

Department of Structures for Engineering and Architecture, University of Naples Federico II, Italy^2

关键词: Analytic solution;    Approximate solution;    Buckling problems;    Convergence properties;    Flexural-torsional buckling;    Lateral-torsional buckling;    Thin-walled beam;    Variational methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/473/1/012011/pdf
DOI  :  10.1088/1757-899X/473/1/012011

来源: IOP

【 摘 要 】

The present work deals with a numerical study on the flexural-torsional buckling of a thin-walled beam with uniformly varying C-section. Approximate solutions to the examined problem are obtained through the Dirichlet variational method and the Rayleigh-Ritz discretization procedure. The presented results prove to be asymptotically convergent for increasing numbers of test functions. This convergence property highlights the technical utility of the proposed approach, on considering the difficulty of obtaining analytic solutions for buckling problems of thin-walled beams with non-uniform cross-section.