Yanal Burulmalı Burkulma için Tanımlanan Elastik ve Plastik Sınır Uzunluklarına Gövde Buruşmasının Etkisinin Gövde Şekil Değiştirme Sonuçları ile Tahmini

Abstract

Bu makaleye şu şekilde atıfta bulunabilirsiniz(To cite to this article): Bas, S., "Estimation of web distortion effect on the elastic and plastic limiting lengths for lateral torsional buckling (LTB) through the web-strain results", Journal of Polytechnics, *(*): *, (*).

Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams

“…Each of the four nodes has six DOFs, 3 translational and 3 rotational. Figure (1) shows the constitutive models for 8 mm and 16 mm thick steel plates [21]. A tri-linear kinematic hardening model with von Mises yield criterion was used for 8 mm steel plate in the beam web and bottom flange.…”

“…Determine the critical moment for a steel beam in Figure (1) having the span of 5.0 m and the cross-section consisting of flange plates of 255.8 x 39.2 and a web plate of 614.5 x 14.5. The mechanical and material properties of the cross-section considered in the analysis are listed in Tables 1 and 2, respectively.…”

“…When elastic lateral-torsional buckling (LTB) occurs, structural stability is lost, and this is regarded as an ultimate limit state failure mode that must be considered when designing slender, long-span beams that are not supported laterally Bas [1]. LTB can also be described as the buckling of the compressed part of the beam when the vertically loaded beam rotates out of its plane due to bending.…”

“…is the warping constant, and is the torsional slenderness parameter. If the moment distribution is not uniform, the critical value cannot be determined from Equation (1), and a modification is required. Most design codes include a solution for LTB of doubly symmetric Imember with unequal end moments in the form as follows:…”