In this section
@article{Chen:2025:10.1016/j.engstruct.2025.121473,
author = {Chen, Y and Málaga-Chuquitaype, C and Zhou, F and Gardner, L},
doi = {10.1016/j.engstruct.2025.121473},
journal = {Engineering Structures},
title = {Predicting local buckling in steel members under cyclic loads: a strain-based approach using the CSM},
url = {http://dx.doi.org/10.1016/j.engstruct.2025.121473},
volume = {345},
year = {2025}
}
TY - JOUR
AB - A new approach, based on the Continuous Strength Method (CSM), is presented for the prediction of cross-section failure through inelastic local buckling in steel members under cyclic loading. Cross-section local buckling failure is predicted to occur when a prescribed strain limit is reached; the effect of loading history is accounted for by considering the cumulative strain from each loading cycle. The strain limit is related to the cross-section slenderness, which is based on the local buckling behaviour of the full cross-section, rather than the individual plate width-to-thickness ratios, making it suitable for different section profiles (e.g., hollow sections and I-sections). Finite element models are established, validated and used to conduct parametric studies, covering a series of steel grades, a wide range of cross-section slendernesses and various cyclic axial loading protocols. The resulting numerical data sets are employed to develop a means of rationally considering the contribution of both the compressive and tensile strain ranges in each loading cycle to cross-section failure. The suitability of the newly proposed method is verified against experimental results on beam-columns with hollow sections and I-sections under cyclic loading, as well as numerical results. The findings indicate that the cumulative deformation capacity and local buckling failure of steel cross-sections can be accurately predicted using the developed strain-based design method. The method can be applied in the inelastic analysis of structures under seismic loading and in the seismic design of steel cross-sections.
AU - Chen,Y
AU - Málaga-Chuquitaype,C
AU - Zhou,F
AU - Gardner,L
DO - 10.1016/j.engstruct.2025.121473
PY - 2025///
SN - 0141-0296
TI - Predicting local buckling in steel members under cyclic loads: a strain-based approach using the CSM
T2 - Engineering Structures
UR - http://dx.doi.org/10.1016/j.engstruct.2025.121473
UR - https://doi.org/10.1016/j.engstruct.2025.121473
VL - 345
ER -