Non-linear elastic stability of rectangular frames under various loading

	Non-linear elastic stability of rectangular frames under various loading
Iranian Journal of Science and Technology Transactions of Civil Engineering
مقاله 10، دوره 28، شماره 5، خرداد 2004، صفحه 615-618
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22099/ijstc.2013.1113
چکیده
The post-buckling behavior of rectangular frames in an elastic domain is studied in depth. In analysis, unsymmetrical geometry, sway possibility and support conditions are considered in order to find their influences on load-deflection paths and non-linear deformations. The static perturbation technique is used for analysis and discussion. The first, a second order perturbation problem as an accurate measurement for the frame, is solved and the solutions compared with previously published papers. The results reveal that symmetric frames with a sway movement, due to lack of an axial force in the beam in the first order perturbation analysis, have a symmetric bifurcation point. However, the post-buckling behavior of un-symmetric frames with or without sway is bifurcated in an asymmetric manner
کلیدواژه‌ها
Non-linear؛ post-buckling؛ Stability؛ frames؛ perturbation

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