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Steel and Composite Structures Volume 47, Number 1, April10 2023 , pages 135-145 DOI: https://doi.org/10.12989/scs.2023.47.1.135 |
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Cold-formed austenitic stainless steel SHS brace members under cyclic loading: Finite element modelling, design considerations |
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YongHyun Cho, Fangying Wang and TaeSoo Kim
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| Abstract | ||
| This study presents a numerical investigation into the hysteretic behavior of cold-formed austenitic stainless steel square hollow section (SHS) brace members using a commercial finite element (FE) analysis software ABAQUS/Standard. The initial/post buckling and fracture life of SHS brace members are comprehensively investigated through parametric studies with FE models incorporating ductile fracture model, which is validated against the existing laboratory test results collected from the literature. It is found that the current predictive models are applicable for the initial buckling strengths of SHS brace members under cyclic loading, while result in significant inaccuracy in predictions for the post-buckling strength and fracture life. The modified predictive model is therefore proposed and the applicability was then confirmed through excellent comparisons with test results for cold-formed austenitic stainless SHS brace members. | ||
| Key Words | ||
| austenitic stainless steel; brace; buckling; fracture life; hysteretic behavior; seismic design; square hollow section | ||
| Address | ||
| YongHyun Cho:Sustainable Building Research Center, Hanyang University ERICA, Ansan 15588, Republic of Korea Fangying Wang:Department of Civil Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom TaeSoo Kim:School of Architecture and Architectural Engineering, Hanyang University ERICA, Ansan 15588, Republic of Korea | ||