Lateral post-buckling analysis of monosymmetric I-beams under uniform bending

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1994 (EN)
Lateral post-buckling analysis of monosymmetric I-beams under uniform bending (EN)

Ioannidis, GI (EN)
Kounadis, AN (EN)

N/A (EN)

The elastic lateral post-buckling response in the vicinity of the critical bifurcational state is examined for the case of a perfect beam, with a monosymmetric I-section, under uniform bending, in which the Wagner effect is taken into account. The governing equations, in which the warping effect of the cross-section is included, are highly nonlinear owing to the nonlinear bending moment-curvature relationship. The stability of the critical state, associated with a stable-symmetric bifurcation point, is analytically established by employing a simple and comprehensive approach. Hence, the beams are not sensitive to imperfections, exhibiting post-buckling strength. However, the post-buckling equilibrium path is quite shallow, so that the load-carrying capacity of such beams, above the critical state, is limited. The analysis is supplemented by an illustrative example. © 1994. (EN)


Elastic response (EN)
Post-buckling analysis (EN)
Steel beams and girders (EN)
Steel construction (EN)
Stiffness (EN)
Steel structures (EN)
Buckling (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Journal of Constructional Steel Research (EN)



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