Research Article
May 1975
Buckling of Inelastic I-Beams Under Moment Gradient
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VIEW THE REPLYPublication: Journal of the Structural Division
Volume 101, Issue 5
Abstract
A model developed for the inelastic buckling of beams under uniform moment, which accounts for strain-hardening residual stresses and monosymmetry of the yielded cross section, is extended to the case of moment gradient by allowing for the effects of nonuniform yielding. A tangent modulus theory of buckling is used, and the governing differential equations are adopted from those which govern the elastic flexural-torsional buckling of tapered monosymmetric I-beams of constant depth. The critical central concentrated loads of simply supported I-beams are obtained by solving the governing differential equations numerically by using the method of finite integrals in an iterative process. The influence of the residual stresses, height of point of application of the load, and in-plane moment distribution on inelastic buckling are investigated, and the theoretical solutions are compared with design rules.
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Published In
Journal of the Structural Division
Volume 101 • Issue 5 • May 1975
Pages: 991 - 1004
Copyright
© 1975 American Society of Civil Engineers.
History
Published in print: May 1975
Published online: Feb 1, 2021
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Sritawat Kitipornchai, AM.ASCE
Struct. Engr., Rankine and Hill, Sydney, New South Wales, Australia
Nicholas S. Trahair, M.ASCE
Assoc. Prof. of Civ. Engrg., Univ. of Sydney, New South Wales, Australia
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.