Experimental and numerical study of stainless steel I-sections under concentrated internal one-flange and internal two-flange loading

•Experiments performed on stainless steel I beams under IOF and ITF loading.•Out-of-plane deformation fields measured using digital image correlation.•Nonlinear finite element simulations and parametric studies conducted.•Assessment of American and European design provisions carried out. The behavio...

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Bibliographic Details
Published in:Engineering structures 2018-11, Vol.175, p.355-370
Main Authors: dos Santos, G.B., Gardner, L., Kucukler, M.
Format: Article
Language:English
Subjects:
Austenitic stainless steel
Bearings
Bending
Bending moments
Carbon steel
Concentrated transverse load
Design
Experiments
Failure modes
Finite element analysis
Finite element method
Finite element modelling
Full load
Hot rolling
I beams
Internal one-flange (IOF)
Internal two-flange (ITF)
Mathematical models
Mechanical properties
Stainless steel
Stainless steels
Structural steels
Testing
Transverse loads
Ultimate loads
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Summary:•Experiments performed on stainless steel I beams under IOF and ITF loading.•Out-of-plane deformation fields measured using digital image correlation.•Nonlinear finite element simulations and parametric studies conducted.•Assessment of American and European design provisions carried out. The behaviour and design of stainless steel I-section beams under concentrated transverse loading are investigated in this study. Twenty-four experiments on stainless steel I-sections, formed by the welding of hot-rolled plates, were performed. The tests were conducted under two types of concentrated transverse loading – internal one-flange (IOF) and internal two-flange (ITF) loading. The experimental set-up, procedure and results, including the full load-displacement histories, ultimate loads and failure modes, are reported. A complementary nonlinear finite element modelling study was also carried out. The models were first validated against the results of the experiments. A parametric investigation into the influence of key parameters such as the bearing length, web slenderness and level of coexistent bending moment, on the structural response was then performed. Finally, an assessment of current design provisions for the resistance of stainless steel welded I-sections to concentrated loading is presented. The results show that the current design formulae yield safe-sided, but generally rather scattered and conservative capacity predictions, with considerable scope for further development.
ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2018.08.015