Nonlinear bending of box section beams of finite length under uniformly distributed loading

Yuan, Wei-bin; Bao, Zhao-shui; Yu, Nan-ting; Zhu, Shuang-shuang; Li-ping, WU

doi:10.1007/s13296-017-6009-5

Cited by 5 publications

(1 citation statement)

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“…For the circular cylindrical shells of finite length, the ovalization of the cross-section is also affected by the length of the shells and the restraint conditions at the two ends of the shells [2]. e similar phenomenon of the flattened cross-sectional deformation has been also found in angle-section beams [3]; channel-section beams bent about the axis parallel to web line [4] and rectangular box-section beams [5], in which the bending-induced cross-sectional deformation leads to a reduction in the bending rigidity of the beams and thus results in a nonlinear relationship between the bending deflection and applied transverse load. e flattened cross-sectional deformation observed in hat-section beams when subjected to bending is referred to as flange curling, which, in principle, is similar to the ovalization of the cross-section of circular cylindrical shells.…”

Section: Introductionmentioning

confidence: 65%

Bending-Induced Cross-Sectional Deformation of Cold-Formed Steel Channel-Section Beams

Dai

2021

Advances in Civil Engineering

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In practice, the cold-formed steel structures are widely used, and their geometrical nonlinearity is of great significance in structural design. However, the current analytical solutions are only applied to linear problems, and the nonlinear problems are mostly considered by commercial finite element software. This paper presents an analytical model to describe the bending-induced cross-sectional deformation in cold-formed steel channel-section beams when subjected to transverse bending loads. The nonlinear effect of cross-sectional deformation on the relationship between the overall bending curvature and applied moment is examined. A parametric study is also carried out to examine how the flange width, lip length, and thickness of the section affect the cross-sectional deformation and corresponding nonlinear bending behavior of the beams.

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