The stability and strength of stocky beams

A brief analysis has been made of the ultimate strengths of short span I-beams bent in their planes of maximum stiffness by pure terminal couples. In the cases treated, primary failure would occur by lateral buckling in all but the most stocky members. The critical applied moments were less in magni...

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Bibliographic Details
Published in:Journal of the mechanics and physics of solids 1953, Vol.1 (2), p.90-102
Main Author: Flint, A.R.
Format: Article
Language:English
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Summary:A brief analysis has been made of the ultimate strengths of short span I-beams bent in their planes of maximum stiffness by pure terminal couples. In the cases treated, primary failure would occur by lateral buckling in all but the most stocky members. The critical applied moments were less in magnitude than the fully plastic moment, the practical collapse load coinciding with that causing full plasticity of the flanges. The principle discussed by Shanley (1947) has been assumed applicable to problems of beam stability and the theory has been extended to beams the materials of which exhibit both discontinuous and continuous stress-strain relationships. Estimates of the buckling moments of typical stocky beams have been compared with the results of a series of tests, the theory predicting a lower limit to the range of possible collapse loads.
ISSN:0022-5096
DOI:10.1016/0022-5096(53)90013-1