In this section
@article{Dai:2025:10.1016/j.tws.2025.113469,
author = {Dai, R and Gardner, L and Wadee, MA},
doi = {10.1016/j.tws.2025.113469},
journal = {Thin-Walled Structures},
title = {Elastic buckling formulae for web crippling of square and rectangular hollow sections under concentrated transverse forces},
url = {http://dx.doi.org/10.1016/j.tws.2025.113469},
volume = {215},
year = {2025}
}
TY - JOUR
AB - Formulae for determining the elastic buckling loads of structural steel rectangular hollow sections subjectedto concentrated transverse forces are presented herein. The predicted elastic buckling load is bounded by atheoretical lower bound, where only the material within the bearing length is mobilised, and a practical upperbound, where the adjacent material is mobilised to its maximum extent. The lower bound is the elastic bucklingload of a wide plate with a width equal to the bearing length and a length equal to the web depth, whilethe upper bound is determined from finite element (FE) analyses of various representative loading scenarios.The level of mobilisation of adjacent material (i.e., where a specific case lies between the lower and upperbounds) is quantified by introducing a coefficient that is calibrated through FE analyses in the commercialpackage ABAQUS. The rotational stiffness afforded to the webs by the flanges is also captured. The four loadingscenarios defined in the North American Specification and Australian/New Zealand Standard for the designof cold-formed steel structures, namely the Interior-Two-Flange (ITF), End-Two-Flange (ETF), Interior-One Flange (IOF) and End-One-Flange (EOF) loading conditions, alongside their transitional cases, are considered.Rectangular hollow sections with a broad spectrum of cross-sectional geometric proportions and bearing lengthsencompassing the aforementioned loading conditions are considered. It is found that the developed formulaefor predicting the elastic buckling loads under concentrated transverse forces provide accurate results that aretypically within 5% of the numerical values. Hence, the developed formulae can be employed as a convenientalternative to numerical methods in advanced structural design methodologies, such as the Direct StrengthMethod (DSM) and the Continuous Strength Method (CSM).
AU - Dai,R
AU - Gardner,L
AU - Wadee,MA
DO - 10.1016/j.tws.2025.113469
PY - 2025///
SN - 0263-8231
TI - Elastic buckling formulae for web crippling of square and rectangular hollow sections under concentrated transverse forces
T2 - Thin-Walled Structures
UR - http://dx.doi.org/10.1016/j.tws.2025.113469
UR - https://doi.org/10.1016/j.tws.2025.113469
VL - 215
ER -