Finite element modelling of sheathed cold-formed steel beam–columns

Kyprianou, Constantinos; Kyvelou, Pinelopi; Gardner, Leroy; Nethercot, D.A.

doi:10.1016/j.tws.2022.110365

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…Thus, the studs failed due to out-of-plane flex ural interaction bowing and local buckling instead of the in-plane flexural buckling seen with unsheathed NC studs [51]. It is evident that sheathing significantly boosts load-car rying capabilities when compared to bare steel columns; specifically, sheathing with the more durable OSB panels on both sides of the CFS studs resulted in a capacity gain o around 100% [52]. By fortifying the columns with carbon fiber-reinforced polymer (CFRP) the post-buckling behavior and axial capacity of short columns with lipped channels and web openings susceptible to local-distortional interactive buckling were improved [53].…”

Section: The Influence Of Sheathing and Benefits In Cfs Constructionmentioning

confidence: 99%

Investigating the Factors Influencing the Strength of Cold-Formed Steel (CFS) Sections

Hussein,

Hussein

2024

Buildings

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The utilization of cold-formed steel (CFS) sections in construction has become widespread due to their favorable attributes, including their lightweight properties, high strength, recyclability, and ease of assembly. To ensure their continued safe and efficient utilization, this review provides a comprehensive investigation into the factors influencing the strength of CFS members. This analysis encompasses design codes, prediction methodologies, material properties, and various structural configurations. This review uncovers discrepancies among existing design codes, particularly noting conservative predictions in AISI and AS/NZS standards for composite and built-up sections. Additionally, the effectiveness of prediction methods such as the direct strength method and effective width method varies based on specific structural configurations and loading conditions. Furthermore, this review delves into recent advancements aimed at enhancing fire resistance, connection design, and the composite behavior of CFS structures. The influence of factors such as eccentricity, sheathing materials, and bolt spacing on structural performance is also examined. This study underscores the crucial role of accurate prediction methods and robust design standards in ensuring the structural integrity and safety of CFS constructions. Through a comparative analysis, it is revealed that AISI and AS/NZS standards exhibit conservatism in predicting nominal buckling loads compared to experimental data. Conversely, a non-linear finite element analysis demonstrates a strong correlation with laboratory tests, offering a more accurate prediction of nominal buckling capacity. Overall, this review offers comprehensive insights aimed at optimizing CFS structural design practices. By identifying key areas for future research and development, this work contributes to the ongoing advancement of safe and efficient CFS construction applications.

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Section: The Influence Of Sheathing and Benefits In Cfs Constructionmentioning

confidence: 99%

Investigating the Factors Influencing the Strength of Cold-Formed Steel (CFS) Sections

Hussein,

Hussein

2024

Buildings

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“…Furthermore, bending tests have demonstrated improvements in stiffness and capacity of up to 22% and 26%, in each case. Notably, the fastener spacing starting at 300 mm and decreasing to 75 mm can result in a remarkable 29% capacity increase for specimens subjected to combined bending and compression [74]. It should be noted that CFS elements, which are manufactured by shaping thin steel plates, are typically coated with zinc in advance [70].…”

Section: Filling and Sheathing Of Cfs Sectionsmentioning

confidence: 99%

State-of-the-Art: Integrating Fastener Technology and Design Guidelines for Enhanced Performance of Cold-Formed Steel Sections

Hussein,

Papp

2023

Buildings

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Cold-formed steel (CFS) elements have gained significant attention in the field of structural engineering due to their numerous advantages, including high strength-to-weight ratio, cost-effectiveness, and ease of assembly and prefabrication. This review paper presents a comprehensive state-of-the-art analysis of the design and analysis of CFS structures, with a specific focus on columns and beams. The primary objectives and aims of this review paper are to provide a detailed assessment of the factors influencing the behavior and performance of CFS elements, including partial composite action, fastener spacing, bolt arrangement, web aperture, stiffeners, and connection spacing, to propose and present various formulas and methodologies that accurately estimate critical buckling loads, strength, and moment resistance for CFS members, and to emphasize the significance of proper screw and bolt placement in preventing premature failure and enhancing the overall load-carrying capacity of CFS structures. Additionally, the impact of temperature on the mechanical properties and performance of CFS members is discussed. The review paper proposes different formulas and methodologies to accurately estimate critical buckling loads, strength, and moment resistance for CFS members. Moreover, the paper highlights the importance of proper screw and bolt placement to prevent early failure and improve the overall load-carrying capacity of CFS structures. The discussion also emphasizes the need for revisions in existing standards and codes to provide more practical guidelines for designers and engineers. Overall, this state-of-the-art review paper provides valuable insights and recommendations for researchers and practitioners involved in the design and analysis of CFS elements.

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Prediction of axial-compressive behaviour of bare cold-formed steel studs through a new stud-to-track contact modeling approach

Mishra,

McCrum

2024

Engineering Structures

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Finite element modelling of sheathed cold-formed steel beam–columns

Cited by 8 publications

References 32 publications

Investigating the Factors Influencing the Strength of Cold-Formed Steel (CFS) Sections

Investigating the Factors Influencing the Strength of Cold-Formed Steel (CFS) Sections

State-of-the-Art: Integrating Fastener Technology and Design Guidelines for Enhanced Performance of Cold-Formed Steel Sections

Prediction of axial-compressive behaviour of bare cold-formed steel studs through a new stud-to-track contact modeling approach

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