Numerical prediction of available rotation capacity of cold-formed steel beams

Hassan, Emad M.; Serror, M. Hassanien; Mourad, Sherif A.

doi:10.1016/j.jcsr.2016.08.010

Cited by 18 publications

(6 citation statements)

References 25 publications

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“…Open sections from I sections [1,[4][5][6][7], lipped channels [8][9][10][11][12], C sections [2,[13][14][15][16] are presented. Research works of an open section from I section were assembled by screws [4,6,7] and bolts [5].…”

Section: Figure 1 Built-up Open Sectionsmentioning

confidence: 99%

“…Ghannam [2] done on C section connected back to back in which DS(Direct strength) and EW(Effective width)gave a conservative result for bending moment capacity also more experimental works are required to compensate for the lack of data in this field study. Serror et al [13] experimented with C sections connected back to back and Hassan et al [16] done numerical prediction on C section, curve section and broken section connected back to back found that the C section is in need of stiffeners to enhance ductility. Wang and Young [14] investigated C sections connected back to back using screws with intermediate stiffeners and found that the numerical and experimental investigation are good in terms of ultimate moments, failure modes and the moment-curvature behaviour.…”

Section: Figure 1 Built-up Open Sectionsmentioning

confidence: 99%

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Assessment on the Behaviour of Cold-Formed Steel Built-up Beams

Vijayanand

Gowshika

Greevan

et al. 2021

Recent Advancements in Geotechnical Engineering

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Abstract. Cold-formed steel, thin-walled steel product finds a wide application in construction worldwide. It has many advantages such as flexibility, convenient handling and fabrication and so on. The CFS is commonly used in structures like bridges, railway coaches etc., as it is economical when compared with hot-rolled steel. It can be used as single or built-up flexural members. Generally, the open section beams are susceptible to failure by lateral- torsional buckling due to the position of its centre of shear and centroid of the cross-section. To overcome this issue, open doubly-symmetric built-up sections or built-up closed sections have been used by many researchers. The parametric studies were conducted by many researchers to find the accuracy of the design strength predictions of the built-up beams. In parametric study, Eurocode specifications, the direct strength method and effective width method based on the North American specifications were used. The study reveals that there are no proper design guidelines available in the current Eurocode and North American specifications. Therefore, the paper provides an outline of research works done on various CFS sections by the researchers and their proposed design recommendations to the codal specifications were also reviewed.

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Section: Figure 1 Built-up Open Sectionsmentioning

confidence: 99%

Section: Figure 1 Built-up Open Sectionsmentioning

confidence: 99%

Assessment on the Behaviour of Cold-Formed Steel Built-up Beams

Vijayanand

Gowshika

Greevan

et al. 2021

Recent Advancements in Geotechnical Engineering

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show abstract

“…The deformation of rectangular tubes in bending was investigated using the finite element method. Many researchers have evaluated the rotation capacity of cold-formed steel (CFS) beams through numerical investigation (18,19). Parametric study was carried out and new design equations for the section moment capacity of RH-FCBs in the Direct Strength Method was proposed by (20).…”

Section: Finite Element Analysismentioning

confidence: 99%

Optimización de secciones CFS bajo flexión usando el Algoritmo Genético

Kumar¹,

Kannan

2021

infconstr

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La tendencia actual en los diseños de la ingeniería estructural es el abaratamiento de los sistemas estructurales mediante la optimización de sus elementos. En este trabajo se emplean métodos numéricos para obtener las dimensiones óptimas de secciones conformadas en frío (CFS) tipo C, Z y en I con perfiles huecos rectangulares (RHFB) que se usan para piezas en flexión. Para la optimización se usaron dos parámetros, la relación entre la dimensión del alma y la longitud del desarrollo (k) y la relación entre la longitud del ala y la longitud del labio (a). Los valores óptimos se obtuvieron mediante algoritmos genéticos. Se investiga la variación del momento resistido con las variaciones en la dimensión del alma, el ala y el labio. Las longitudes de desarrollo consideradas en este trabajo van de 100 mm a 500 mm y los espesores adoptados desde 1 mm a 3 mm. El momento resistido y el comportamiento a pandeo de las secciones conformadas en frío (CFS) se verifican mediante el análisis por elementos finitos no lineales usando ABAQUS.

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“…Cold-formed steel has seen increased usage as the primary members for residential and multi-story commercial buildings. Durability, strength, material consistency, and ecological concerns have encouraged engineers to use these structures [1][2][3][4][5][6][7][8]. Guidance for cold-formed steel structures design can be found in several design recommendations [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Stiffness prediction for bolted moment-connections in cold-formed steel trusses

et al. 2020

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The purpose of this research was to study the behavior of cold-formed steel cantilever truss structures. A cantilever truss structure and bolt-moment connection were tested and verified by the 3D-finite element model. The verification results showed a good correlation between an experimental test and finite element analysis. An analytical method for elastic rotational stiffness of bolt-moment connection was proposed. The equation proposed in the analytical method was used to approximate the elastic rotational stiffness of the bolt group connection, and was also applied to the Richard-Abbott model for generating the nonlinear moment-rotation curve which modeled the semi-rigid connection stiffness. The 2D-finite element analysis was applied to study the behavior of the truss connection, caused by semi-rigid connection stiffness which caused a change of force to the truss elements. The results showed that the force in the structural members increased by between 13.62%-74.32% of the axial forces, and the bending moment decreased by between 33.05%-100%. These results strongly suggest that the semi-rigid connection between cold-formed steel cantilever truss structures should be considered in structural analysis to achieve optimum design, acknowledging this as the real behavior of the structure.

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Numerical prediction of available rotation capacity of cold-formed steel beams

Cited by 18 publications

References 25 publications

Assessment on the Behaviour of Cold-Formed Steel Built-up Beams

Assessment on the Behaviour of Cold-Formed Steel Built-up Beams

Optimización de secciones CFS bajo flexión usando el Algoritmo Genético

Stiffness prediction for bolted moment-connections in cold-formed steel trusses

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