Web crippling behaviour of cold-formed high-strength steel unlipped channel beams under End-One-Flange load case

Kanthasamy, Elilarasi; Chandramohan, D.; Gunalan, Shanmuganathan; Poologanathan, Keerthan; Gatheeshgar, Perampalam; Corradi, Marco; McIntosh, Alex

doi:10.1016/j.cscm.2022.e01022

Cited by 5 publications

(3 citation statements)

References 41 publications

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“…For a modelling element type consistent with previous researchers [15][16][17][18][19][20][21][22][31][32][33][34], a quadrilateral shell SR4 element type with four nodes was used to model channels in ABAQUS, which is applicable for general shell purpose application and can capture finite membrane shell strains that are suitable for structural analysis. A mesh size (5 mm × 5 mm) was adopted for the channels, where a mesh convergence setting is ensured in the analysis acceptance criteria.…”

Section: Meshing and Element Typementioning

confidence: 99%

End-One-Flange Web Crippling Behavior of Cold-Formed High-Strength Steel Channels with Web Holes at Elevated Temperatures

et al. 2023

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This paper investigates the web crippling strength of cold-formed high-strength steel (CHS) channels with centered web holes subjected to end-one-flange (EOF) loading at elevated temperatures, considering both flanges fastened and unfastened to load plates conditions. The stress-strain curve and material properties for CHS (S690QL steel grade) channels were adopted from the literature, where the temperatures ranged from 20 to 800 °C. The material characteristics were incorporated into finite element (FE) models using ABAQUS. The developed FE model was then validated against the published test results to evaluate the effects of various parameters including web hole diameter, bearing length, cross-section sizes, and flange fastening conditions of such channels at elevated temperatures, and a comprehensive parametric investigation including a total of 1710 validated finite element models was performed. From the parametric study results, it was found that the web crippling strength reduction factor is sensitive to the changes of the hole size and the bearing length, with the parameters of hole size having the largest effect on the web crippling reduction factor; however, the web crippling strength reduction factor remains stable when the temperature is changed from 20 to 800 °C. According to the FEA results, new reliable web crippling strength reduction factor equations for such CHS channels were proposed. In the comparison of proposed design strengths to the numerical failure load, the proposed design equations are suitable to predict the web crippling strength for CHS channels subject to EOF loading at ambient and elevated temperatures.

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Section: Meshing and Element Typementioning

confidence: 99%

End-One-Flange Web Crippling Behavior of Cold-Formed High-Strength Steel Channels with Web Holes at Elevated Temperatures

et al. 2023

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“…They performed a detailed parametric study and developed 243 FEM models that were compared with experimental results. The study revealed that the experimental and numerical results showed a strong correlation [8]. Zhiyuan Fang et al (2022) conducted a numerical simulation on CFS stainless steel sections with web holes under IOF loading conditions.…”

Section: Introductionmentioning

confidence: 97%

“…From the comprehensive literature analysis, it is evident that the previous researchers [3][4][5][6][7][8][9] have conducted extensive investigations and numerical studies. They have also performed a detailed parametric study by varying section profiles, steel grades, material properties, support condition, and loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Web-Crippling Capacity of High Performance Cold-Formed Lipped Steel Sections Subjected to Elevated Temperature

Jayakumar,

Kiran,

Nammalvar

et al. 2023

Buildings

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High-performance steel has emerged as an advanced structural material in the construction practice of industrial buildings, due to its excellent properties. However, fire poses a significant threat to cold-formed steel structures, as they are prone to deform and buckle under the exposure, potentially leading to building collapse. This study aimed to evaluate the post-fire web-crippling behaviour of high performance CFS sections for End Two Flange (ETF) and Interior Two Flange (ITF) load cases. Two types of specimens were used: CFS webs without holes and CFS webs with circular holes. All test specimens were heated according to the ISO 834 standard fire curve and were subsequently cooled by air or water. A total of 52 specimens (ambient and post-fire) were tested under ETF and ITF load conditions. The load-deflection behaviour and failure modes were evaluated through experimental and numerical analysis. Finite element modelling was used to compare the load-deflection behaviour and failure modes of CFS members with experimental results. The experimental results indicate that the web load-carrying capacity of the high-performance steel member decreases drastically as the heating duration increases. Furthermore, the ITF load case specimens exhibited a lower strength loss than the ETF load case specimens at elevated temperatures. There was an excellent agreement between the experimental and FEM results in terms of the load-carrying capacity and failure modes of high performance CFS.

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Development of a new temperature-dependent yield criterion for stainless and high-strength alloy steels in construction engineering

Ding

Zhang

2023

Case Studies in Construction Materials

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Web crippling behaviour of cold-formed high-strength steel unlipped channel beams under End-One-Flange load case

Cited by 5 publications

References 41 publications

End-One-Flange Web Crippling Behavior of Cold-Formed High-Strength Steel Channels with Web Holes at Elevated Temperatures

End-One-Flange Web Crippling Behavior of Cold-Formed High-Strength Steel Channels with Web Holes at Elevated Temperatures

Web-Crippling Capacity of High Performance Cold-Formed Lipped Steel Sections Subjected to Elevated Temperature

Development of a new temperature-dependent yield criterion for stainless and high-strength alloy steels in construction engineering

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