Abstract
Equilibrium method is employed to analyze interaction of flexural and torsional buckling of angle-bar stiffened plates. The cross sectional areas of the angle-bar stiffened plate for these two modes are different (hybrid beam). In flexural buckling mode, angle-bar and attached plate buckle together, however in torsional buckling mode only angle-bar would be buckled. Basic equations of equilibrium for flexural and torsional buckling modes of angle-bar stiffened plates are deduced based on hybrid beam concept and new strain distribution assumption for sideway bending of stiffeners. Elastic buckling stress of different angle-bar stiffened plates are calculated and compared with finite element method and those available in the literature. It is shown that present method has very good agreements with finite element method for isolated rigid angle-bar and isolated rigid angle-bar with rigid attached plate. For isolated rigid angle-bar with pin connected to rigid attached plates it has better agreement than previously proposed method.
Similar content being viewed by others
References
Argris, J.H. (1954). “Flexural-torsion failure of panels. Aircraft Engineering and Aerospace Tech, 26(6), pp. 174–84.
Fujikubo, M. and Yao, T. (1999). Elastic local buckling strength of stiffened plate considering plate/stiffener interaction and welding residual stress. Mar struct, 12, pp. 543–564.
Hughes. O.F. and Ma, M. (1996). Elastic Tripping Analysis of Asymmetrical Stiffeners. Comput Struct, 60(3), pp. 369–389.
Rahbar-Ranji, A. (2012a). Elastic buckling analysis of longitudinally stiffened plates with flat-bar stiffeners. Ocean Engineering, 58, pp. 48–59. Doi:/10.1016/j. oceaneng.2012.09.018.
Rahbar-Ranji, A. (2012b). “Elastic tripping analysis of angle-bars and permanent means of access structures. Ocean Engineering, 53, pp. 128–137, Doi:10.1016/j.oceaneng.2012.07.008.
Rahbar-Ranji, A. (2013). Elastic coupled buckling analysis in stiffened plates with T-bar stiffeners. Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, 227(6), pp. 1135–1149. Doi: 10.1177/0954406212458076.
Timoshenko, S.P. and Gere, J.M. (1961). Theory of elastic stability. 2 nd ed. Engineering Societies Monograph, NY: McGraw Hill.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Rahbar-Ranji, A. Eigenvalue analysis of flexural-torsional buckling of angle-bar stiffened plates. Int J Steel Struct 16, 823–830 (2016). https://doi.org/10.1007/s13296-015-0010-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13296-015-0010-7