Effect of circular holes on the web crippling capacity of cold-formed LiteSteel beams under Interior-Two-Flange load case

Hareindirasarma, S.; Elilarasi, K.; Janarthanan, B.

doi:10.1016/j.tws.2021.108135

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…The translation along the Y-axis and rotation about the X-axis and Z-axis were restrained along the symmetrical line. Previous studies also used similar boundary conditions for web crippling studies [2,16,17,19,[25][26][27]31,[36][37][38].…”

Section: Loading and Boundary Conditionsmentioning

confidence: 99%

“…The study of Santaputra et al [3] covered a steel section strength of 401 to 1138 MPa, whilst Wu et al [4] considered the virgin material yield stresses parallel to the rolling The web crippling behaviour of CFS channel sections under all four load cases, considering different supporting conditions (fastened support to the flanges or unfastened support to the flanges), has been investigated, and improvements in the codified design equations have been proposed . Moreover, web crippling studies have been conducted on various sections, such as rectangular hollow flange sections [36][37][38][39] and SupaCee sections [17,40], to check the applicability of the codified design equations available in the standards, whilst some studies have investigated the web crippling behaviour of various sections with web openings [41][42][43][44][45]. However, all these findings are limited to a yield strength less than 500 MPa, due to the unavailability of cold-forming technology [5].…”

Section: Introductionmentioning

confidence: 99%

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Web Crippling Behaviour of Cold-Formed High Strength Steel Unlipped Channel Beams

et al. 2022

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Cold-formed sections (CFS) fabricated using high strength steel have recently been utilised in construction due to their numerous advantages, such as higher load-to-weight ratio, flexibility of shape, and availability in relatively long spans. High strength CFS channel sections can be used as purlins and joists in structural systems; thus, they are vulnerable to different buckling instabilities, including web crippling. Predicting their web crippling capacity using the current design guidelines may be insufficient due to their empirical nature. This study, therefore, aims to investigate the web crippling capacity of high strength unlipped CFS sections under End-Two-Flange (ETF) loading conditions. Numerical simulations were carried out using nonlinear finite element (FE) analysis. The developed models were first validated against available experimental data and then used as a base for conducting an extensive parametric study. The ultimate web crippling capacity obtained from the parametric study was used to assess the accuracy of the available design equations in the standards and those proposed in the relevant studies. The assessment revealed that the existing design equations are not suitable for predicting the ultimate web crippling capacity for high strength CFS channel sections under the ETF loading condition. Thus, a modified design equation was proposed, following the same technique of current design standards, and a new Direct Strength Method (DSM) approach was developed.

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Section: Loading and Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Web Crippling Behaviour of Cold-Formed High Strength Steel Unlipped Channel Beams

et al. 2022

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“…On that account, bilinear model was preferred to state the stress-strain behaviour of CFS in the numerical modelling. Considering the recent past research studies [22][23][24], which investigated the behaviour of CFS sections, an elastic-perfectly plastic material was chosen with nominal yield strength to model SupaCee section. Material properties such as Web, 5 mm x 5 mm mesh size…”

Section: Materials Propertiesmentioning

confidence: 99%