Parametric Study on Buckling Behavior of Sinusoidal Corrugated Web Girder

This paper presents a finite element based parametric study of the dynamic response and strength of sandwich steel beams with either sinusoidal or trapezoidal corrugated core subjected to impulsive blast loads. The sandwich steel beams consists of flat top and bottom substrates made of Steel 1018 and four core layers of Steel 1008. The core layers are arranged with uniform and non-uniform thicknesses. The finite element model is validated with a set of shock tube experiments and thus makes it feasible for a present parametric design study of core configurations. Sinusoidal and trapezoidal core shapes as well as various core thickness arrangements are taken into consideration for comparing core crushing and buckling behavior and their performances in mitigating blast load effects onto the main structure. A unit-cell beam and a fully clamped sandwich beam are studied to elucidate the effect of core shapes and arrangement onto its dynamic response.

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Numerical Analysis of Hybrid Steel Beams with Trapezoidal Corrugated Web Nonwelded Inclined Folds

Advances in Civil Engineering ◽

10.1155/2021/9918967 ◽

2021 ◽

Vol 2021 ◽

pp. 1-15

Author(s):

Yasir M. Alharthi ◽

Ibrahim A. Sharaky ◽

Ahmed S. Elamary

Keyword(s):

Parametric Study ◽

Fatigue Cracks ◽

Shear Capacity ◽

Experimental Results ◽

Additional Stress ◽

Steel Beams ◽

Fe Model ◽

Flange Thickness ◽

Corrugated Web ◽

Steel Grades

Hybrid beams provide the opportunity to implement characterized steel sections by recruiting materials based on yield strength and the type of applied stress. Previous studies demonstrated that steel beams with a trapezoidal corrugated web (SBCWs) were affected by both fatigue cracks initiated along the inclined fold (IF) and the maximal additional stress located in the middle of the IFs. This paper presents a numerical study of hybrid SBCWs and nonwelded IFs. Numerical simulation is presented using the finite element (FE) method with the aid of the ANSYS software package. Three-dimensional FE models were developed considering the nonlinear properties of materials and geometric imperfection and validated using five hybrid specimens that were fabricated and tested experimentally by the authors. The load-deflection behavior and failure mechanism of the numerical results were in good agreement with the experimental results. The comparison of the FE models and the experimental results shows the good capability of the FE model to be used as a base for the parametric study. The parametric study focused on the effect of web thickness, flange thickness, web height, and flange and web steel grades. Furthermore, parametric studies are conducted to investigate the effects of the number and depth of the stiffeners on the behavior of hybrid SBCWs. We concluded that the flange thickness, web thickness, web height, and steel grades of flanges significantly affect the capacity and failure mode of hybrid SBCWs. We also concluded that the flange stiffeners have a significant effect on the overall behavior, toughness, and load capacity of SBCWs. Finally, a new equation is proposed to anticipate the shear capacity of SBCW nonwelded IFs based on the length of the welded horizontal fold.

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Numerical study of the flange buckling behavior of trapezoidally corrugated web girders

Engineering Structures ◽

10.1016/j.engstruct.2021.113120 ◽

2021 ◽

Vol 247 ◽

pp. 113120

Author(s):

Amr E.K. Qureshi ◽

Sedky A. Tohamy ◽

Amr B. Saddek ◽

Ahmed A.M. Drar

Keyword(s):

Numerical Study ◽

Buckling Behavior ◽

Corrugated Web

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Buckling behavior of steel column with triangularly corrugated web

MATEC Web of Conferences ◽

10.1051/matecconf/201927902007 ◽

2019 ◽

Vol 279 ◽

pp. 02007

Author(s):

Sergey Kudryavtsev

Keyword(s):

General Purpose ◽

Reduction Factor ◽

Automatic Welding ◽

Lateral Buckling ◽

Element Analysis ◽

Steel Columns ◽

Buckling Behavior ◽

Corrugated Webs ◽

Corrugated Web ◽

Building Practice

The paper presents a study of behaviour of axially loaded columns that consist of two flanges and a thin triangularly corrugated web, connected by automatic welding. In the literature, the buckling behaviour of steel columns was dealt with mostly for members with plate webs. Researches of that problem for columns with corrugated webs were found out to be very limited. A parametric study is carried out for various column slenderness and corrugation densities. A general-purpose finite element analysis software ABAQUS was used. The corrugation densities adopted in this study represent practical geometries, which are commonly used for such structures in building practice. Plot showing the influence of section slenderness on value of reduction factor for lateral buckling is presented. It is determined that existing buckling curves poorly describe the dependence of the reduction factor on slenderness for axially compressed members with triangularly corrugated webs. Finally, recommendations were proposed for the design of pin-ended columns with corrugated webs at lateral buckling in accordance with numerical results.

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Analytical and Numerical Analyses of Delamination Buckling in Layer Beams

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.111.75 ◽

2006 ◽

Vol 111 ◽

pp. 75-78

Author(s):

Madusudhanan R. Parlapalli ◽

Dong Wei Shu ◽

G.B. Chai

Keyword(s):

Numerical Analysis ◽

Analytical Model ◽

Parametric Study ◽

Slenderness Ratio ◽

Numerical Analyses ◽

Ansys Software ◽

Buckling Mode ◽

Buckling Behavior ◽

Controlling Parameter ◽

Delamination Buckling

In the present paper, new nondimensionalized parameters, namely, nondimensionalized axial and bending stiffnesses have been introduced to study analytically the buckling behavior of two-layer beams with separated delaminations. Numerical analysis has been carried out by using ANSYS software to validate the developed analytical model. Delaminations are modeled with gap elements in ANSYS. A detailed parametric study has been carried out and it is found that the buckling behavior strongly depends on these new nondimensionalized parameters. Another nondimensionalized parameter, effective-slenderness ratio is also introduced and it is found to be a controlling parameter of delamination buckling mode configurations.

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