Research Article
Nov 1976
Tests of Circular Steel Tubes in Bending
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VIEW THE REPLYPublication: Journal of the Structural Division
Volume 102, Issue 11
Abstract
A series of tests on 10-3/4in. (270-mm) tubes was conducted to determine the plastic rotation capacity of tubular beams. Six different D/t values ranging from 18-102 were used in the tests. Cantilever and fixed-ended beams, with moment gradients (shears) and restraints against ovalizing at the end, are compared with the behavior of the constant moment region of simple beams. Tubes with D/t greater than about 50 do not have sufficient plastic hinge rotation capacity to develop the classical ultimate strength. In the absence of a small moment gradient or stiffening, the plastic moment is not quite reached in tubes with D/t of 35. For inelastic buckling in the range of D/t of 18-80, critical strains appear to be proportional to (t/D)2, as opposed to the conventionallinear relationship. Information concerning the complex post-buckling behavior is also presented.
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Published In
Journal of the Structural Division
Volume 102 • Issue 11 • November 1976
Pages: 2181 - 2195
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Nov 1976
Published online: Feb 1, 2021
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Authors
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Donald R. Sherman, M.ASCE
Prof. of Struct. Engrg., Univ. of Wisconsin-Milwaukee, Milwaukee, Wisc.
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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.
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.