An approach to the design of imperfect slender beams

✍ Scribed by D.A. Nethercot

• Publisher: Elsevier Science
• Year: 1973
• Weight: 307 KB
• Volume: 8
• Category: Article
• ISSN: 0007-3628
• DOI: 10.1016/0007-3628(73)90004-2

✦ Synopsis

A method is described for deriving design curves which provide a smooth transition through the various modes of failure of steel beams and are therefore valid over the whole range of beam slendernesses. Comparison with available test results and the theory for perfect beams demonstrates the validity of the approach which leads to more manageable equations than previous methods. NOMENCLATURE b flange breadth E Young's modulus G shear modulus h distance between flange centroids Iy minor second moment of area J torsion constant L span M applied major axis moment Mcr value of Mnecessary to cause lateral buckling Mp fully plastic moment My yield moment Mr, yield moment allowing for presence of residual stresses r~. minor radius of gyration F warping constant try yield stress