Experimental and numerical study on lateral-torsional buckling of singly symmetric Q460GJ steel I-shaped beams

Yang, Bo; Kang, Shao‐Bo; Xiong, Gang; Nie, Shidong; Hu, Yi; Wang, Saibo; Bai, Jubo; Dai, Guoxin

doi:10.1016/j.tws.2016.12.009

Cited by 34 publications

(21 citation statements)

References 16 publications

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“…The obtained results demonstrated the element's overall behaviour and the local phenomena accompanying the plastic hinge formation. Another experimental validation of numerical modelling was presented in the case of a steel I-cross section element bent in one plane in Yang et al (2017). The obtained and verified results demonstrate conservative predictions of three standards: Eurocode 3, American standards and Chinese standards.…”

Section: Introductionmentioning

confidence: 67%

Buckling Resistance Criteria of Prismatic Beams Under Biaxial Moment Gradient

et al. 2018

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Laterally and torsionally unrestrained steel I-section beams are susceptible to torsional deformations between supports; therefore, according to Part 1-1 of Eurocode 3, they need to be designed to resist lateral-torsional buckling. Eurocode's steelwork design criteria require safety checking based on two stability interaction formulae utilizing the so-called equivalent uniform moment factors and the cross-section resistance formula that, in the case of moment gradient, refer to the beam end section. Uncoupling the beam stability resistance criterion and the cross-section resistance criterion may result in a nonuniform safety assessment of I-section beams. Finite element simulations of the beam resistance for different moment gradient ratios are performed. Verification of the buckling resistance is conducted by varying the following parameters: the slenderness ratio, the location of maximum end moments about both axes and the section depth-to-width ratio (i.e., considering rolled I-and H-sections). The variation in the accuracy of the current Eurocode resistance evaluation method is identified, and an approach for a better equalization of the safety predictions is suggested by considering different values of the most important factors influencing the stability performance of steel I-section beams.

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Section: Introductionmentioning

confidence: 67%

Buckling Resistance Criteria of Prismatic Beams Under Biaxial Moment Gradient

et al. 2018

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“…The numerical model uses the finite element method and is derived from the criterion of the method of weighted residuals [2][3][4][5][6][7][8][9][10]. Equation (1) is multiplied by the weighting function and integrated over the considered region.…”

Section: Mathematical and Numerical Modelsmentioning

confidence: 99%

“…Many current papers are aimed at the improvement of the strength of the crane girder structure. These efforts help to overcome damage of the crane girders [1][2][3][4][5][6][7]. The design of modern mechanical constructions is a complex task that requires the use of suitable tools.…”

Section: Introductionmentioning

confidence: 99%

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Mathematical modeling of mechanical phenomena in the gantry crane beam

Sowa

Kwiatoń

2017

J. Appl. Math. Comput. Mech.

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Abstract. This work concerns the numerical analysis of the gantry crane beam in the context of the safety of the structure. The mathematical model and numerical simulations of mechanical phenomena in the gantry crane beam are presented in this paper. The analysed gantry crane beam has a T-section. As a result of the computations carried out, the stresses and displacements of the gantry structure were obtained. The influence of the value and loading force position on the equivalent stress in the gantry crane beam was evaluated. It was sought that the maximum value of Huber-Mises-Hencky stress induced in the beam was less than the strength of material, so the design is safe.MSC 2010: 74A10, 74S05, 65C20, 68U20

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“…However, a number of studies have been conducted based on elastic buckling theory, particularly experimental studies and theoretical analysis [3] on lateral torsional buckling of steel beams under static load. Yang et al carried out experimental tests and numerical simulations on lateral torsional buckling behavior of singly symmetric I-beams fabricated from Q460GJ steel [4,5]. Their results showed that steel beams developed lateral torsional buckling under concentrated point loads at the mid-span.…”

Section: Introductionmentioning

confidence: 99%

Lateral Torsional Buckling of Steel Beams under Transverse Impact Loading

Zhang

Liu

Feng

2018

Shock and Vibration

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This study employs experiments and numerical simulation to analyze the dynamic response of steel beams under huge-mass impact. Results show that lateral torsional buckling (LTB) occurs for a narrow rectangular cross-section steel beam under transverse impact. The experiments were simulated using LS-DYNA. The numerical simulation is in good agreement with experimental results, thus indicating that the LTB phenomenon is the real tendency of steel beams under impact. Meanwhile, the study shows that LS-DYNA can readily predict the LTB of steel beams. A numerical simulation on the dynamic response of H-shaped cross-section steel beams under huge-mass impact is conducted to determine the LTB behavior. The phenomenon of dynamic LTB is illustrated by displacement, strain, and deformation of H-shaped steel beams. Thereafter, a parametric study is conducted to investigate the effects of initial impact velocity and momentum on LTB. The LTB of H-shaped cross-section steel beams under transverse impact is primarily dependent on the level of impact kinetic energy, whereas impact momentum has a minor effect on LTB mode.

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Experimental and numerical study on lateral-torsional buckling of singly symmetric Q460GJ steel I-shaped beams

Cited by 34 publications

References 16 publications

Buckling Resistance Criteria of Prismatic Beams Under Biaxial Moment Gradient

Buckling Resistance Criteria of Prismatic Beams Under Biaxial Moment Gradient

Mathematical modeling of mechanical phenomena in the gantry crane beam

Lateral Torsional Buckling of Steel Beams under Transverse Impact Loading

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