Experimental and numerical studies of lean duplex stainless steel beams

Theofanous, Marios; Gardner, Leroy

doi:10.1016/j.jcsr.2010.01.012

Cited by 132 publications

(73 citation statements)

References 25 publications

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“…The obtained values are close to those reported by Saliba and Gardner [8] (n = 10.0 and n' 0.2,1.0 = 2.0) following coupon tests on similar lean duplex stainless steel plate material used to form welded I-sections. The values reported by Theofanous and Gardner [6,7] from tests on cold-formed lean duplex stainless steel hollow section material (n = 7.0 and n' 0.2,1.0 = 3.3), indicate a more rounded stress-strain response, which is typical of cold-formed material.…”

Section: Materials Testingmentioning

confidence: 85%

“…The finite element type used for the numerical analyses was the four-noded doubly curved general-purpose shell element S4R with finite membrane strains. This element has been shown to be suitable for the modelling of a range of shell thicknesses and has been successfully employed in the modelling of lean duplex stainless steel welded Isections [8] and other similar structural components [6,7,23,24].…”

Section: Basic Modelling Assumptionsmentioning

confidence: 99%

“…(3), where σ 0.2 is the tensile 0.2% proof stress and σ cr is the elastic critical buckling stress of the most slender constituent plate element in the section, determined on the basis of the flat width of the element. This imperfection amplitude prediction model has been successfully employed for the modelling of lean duplex stainless steel welded I-sections in compression and bending [8], and further similar applications [6,7,27]. The imperfection amplitude ω D&W is given by Eq.…”

Section: Basic Modelling Assumptionsmentioning

confidence: 99%

“…In order to overcome this, a comprehensive programme of experimental and numerical research is underway at Imperial College London to investigate the structural performance of lean duplex stainless steel. Initial research concentrated on cold-formed hollow sections [6,7], while more recently the focus has moved to welded I-sections [8] and, in the present paper, plate girders. Other recent studies of cold-formed lean duplex stainless steel hollow sections have been performed by Huang and Young [9] and Patton and Singh [10].…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of the shear response of lean duplex stainless steel plate girders

Saliba

Gardner

2013

Engineering Structures

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An experimental and numerical study of the shear response of lean duplex stainless steel plate girders is described in this paper. A total of nine welded plate girders were tested. Lean duplex stainless steel, which is a low nickel variety of the material, has approximately twice the strength of the common austenitic grades and at approximately half the initial cost. It also possesses good corrosion resistance and high temperature properties, as well as adequate weldability and fracture toughness. Two web panel aspect ratios and a range of web slendernesses were considered. The results from the experiments, including the full load-deformation histories and failure models are reported. A numerical investigation was carried out in parallel with the testing. The models were first validated against the experimental results after which parametric studies were performed to generate data for a wider range of cross-sections. The generated experimental and numerical data were used to assess the shear resistance design equations given in Eurocode 3: Part 1.4. The current design provisions were shown to be safely applicable to lean duplex stainless steel, though improved guidance is sought in further ongoing research. Saliba, N. and Gardner, L. (2013). Experimental study of the shear response of lean duplex stainless steel plate girders. Engineering Structures. 46,[375][376][377][378][379][380][381][382][383][384][385][386][387][388][389][390][391]

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Section: Materials Testingmentioning

confidence: 85%

Section: Basic Modelling Assumptionsmentioning

confidence: 99%

Section: Basic Modelling Assumptionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental study of the shear response of lean duplex stainless steel plate girders

Saliba

Gardner

2013

Engineering Structures

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“…Although a number of established structural design codes for stainless steel exist, previous studies [5][6][7][8][9][10][11][12] have highlighted limitations and undue conservatism in some of their provisions. This has prompted research aimed at broadening the scope and enhancing the efficiency of these codes.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of structural stainless steel cross-sections under combined loading – Part II: Numerical modelling and design approach

Zhao

Rossi

Gardner

et al. 2015

Engineering Structures

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In parallel with the experimental study described in the companion paper [1], a numerical modelling programme has been carried out to investigate further the structural behaviour of stainless steel cross-sections under combined loading. The numerical models, which were developed using the finite element (FE) package ABAQUS, were initially validated against the experiments, showing the capability of the FE models to replicate the key test results, the full experimental load-deformation histories and the observed local buckling failure modes.Upon validation of the FE models, parametric studies were conducted to generate additional structural performance data over a wide range of cross-section slenderness and combinations

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Statistical data for system‐based reliability analysis of stainless steel structures with hollow sections

Arrayago¹,

Rasmussen

Real

2021

ce papers

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Current codes for steel structures, including AISC 360‐10, AS4100 and Eurocode 3, are in the process of evolving from the current member‐based design method to direct system‐based approaches that allow evaluating the strength of structures directly from numerical simulations. However, these codes do not provide adequate safety factors nor reliability requirements for structural systems. Thus, it is necessary to build a rigorous structural reliability framework to investigate acceptable target reliability indices for structural systems and to provide adequate system safety factors. While this framework has been developed based on advanced Finite Element analysis for carbon steel structures in recent years in the form of the Direct Design Method (DDM), it does not exist for stainless steel structures. This paper presents the first step towards developing a system‐based reliability framework for stainless steel structures by providing statistical distributions of the key parameters governing the strength of systems composed of stainless steel cold‐formed hollow sections. The distributions are based on a comprehensive database collected from the literature including data on the main sources of uncertainty: geometric properties, imperfections and material parameters.

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Experimental and numerical studies of lean duplex stainless steel beams

Cited by 132 publications

References 25 publications

Experimental study of the shear response of lean duplex stainless steel plate girders

Experimental study of the shear response of lean duplex stainless steel plate girders

Behaviour of structural stainless steel cross-sections under combined loading – Part II: Numerical modelling and design approach

Statistical data for system‐based reliability analysis of stainless steel structures with hollow sections

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