Cold-formed austenitic stainless steel SHS brace members under cyclic loading: Finite element modelling, design considerations

Cho, Yong Hyun; Wang, Fangying; Kim, Tae Soo

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.

Citation

Cho, Y. H., Wang, F., & Kim, T. S. (2023). Cold-formed austenitic stainless steel SHS brace members under cyclic loading: Finite element modelling, design considerations. Steel and Composite Structures, 47(1), 135-145. https://doi.org/10.12989/scs.2023.47.1.135

• Journal Article Type: Article
• Acceptance Date: Mar 27, 2023
• Online Publication Date: Apr 10, 2023
• Publication Date: Apr 10, 2023
• Deposit Date: May 10, 2023
• Publicly Available Date: May 30, 2023
• Journal: Steel and Composite Structures
• Electronic ISSN: 1598-6233
• Peer Reviewed: Peer Reviewed
• Volume: 47
• Issue: 1
• Article Number: 1
• Pages: 135-145
• DOI: https://doi.org/10.12989/scs.2023.47.1.135
• Keywords: Austenitic stainless steel; brace; buckling; fracture life; hysteretic behavior; seismic design; square hollow section
• Public URL: https://nottingham-repository.worktribe.com/output/20560645
• Publisher URL: http://www.techno-press.org/content/?page=article&journal=scs&volume=47&num=1&ordernum=10