Experimental study on ferritic stainless steel RHS and SHS beam-columns

Arrayago, Itsaso; Real, Esther; Arrizabalaga, Enrique Mirambell

doi:10.1016/j.tws.2015.12.004

Cited by 42 publications

(58 citation statements)

References 14 publications

(24 reference statements)

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“…The behaviour of stainless steel SHS and RHS members subjected to compression and combined loading has been analysed through different experimental programmes over the last three decades, covering austenitic, ferritic, duplex and lean duplex grades. In the present study, the austenitic stainless steel column tests reported in [15,[17][18][19][20][21] have been considered, while the considered tests on ferritic and duplex grades correspond to those reported in [22][23][24] and [25][26][27][28]. For beamcolumns, the experimental programmes reported in [15,[29][30], [16,[23][24]29] and [28,31] corresponding to austenitic, ferritic and duplex or lean duplex grades respectively have been included in the analysis.…”

Section: Experimental Data Collectionmentioning

confidence: 99%

“…The column and beam-column FE models utilized in the parametric study were created by the general purpose software Abaqus and were first validated against the experimental results on ferritic stainless steel members reported in Arrayago et al [23]. The mid-surfaces of the crosssections were modelled using the Abaqus four-node shell element with reduced integration S4R, widely used for modelling cold-formed stainless steel cross-sections.…”

Section: Fe Model Validation and Parametric Studiesmentioning

confidence: 99%

“…The computational efficiency and reliability of the results was ensured by a mesh convergence study and by limiting the length of the shell elements to 5 mm. Initial geometric imperfections were introduce in the models in the shape of the first elastic buckling mode obtained from a linear buckling analysis, with imperfection amplitudes equal to those measured in the specimens and reported in [23] for the verification of the FE model. The nonlinear analyses were performed by using a modified Riks method.…”

Section: Fe Model Validation and Parametric Studiesmentioning

confidence: 99%

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Full slenderness range DSM approach for stainless steel hollow cross-section columns and beam-columns

Arrayago

Rasmussen

Real

2017

Journal of Constructional Steel Research

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The behaviour of austenitic, ferritic and duplex stainless steel Rectangular and Square Hollow Section members subjected to compression and combined loading is investigated in this paper. A full slenderness range Direct Strength Method (DSM) approach is proposed based on experimental results and numerical strengths obtained from FE parametric studies. The method accounts for local buckling effects and enhanced material properties are also incorporated for those members stable enough to allow partial yielding of the cross-sections. The proposed method is based on strength curves previously provided for cross-sections although additional limitations have been adopted. The DSM approach for columns is based on existing buckling curves and provides accurate resistance predictions for slender and stocky cross-sections. The proposed DSM approach for beam-columns also improves capacity predictions for stocky and slender cross-sections obtained from the traditional methods for different bending moment distributions. This is attributed to the fact that the beam-column behaviour is directly calculated with a unique strength curve, considering the member and section slendernesses based on the elastic instabilities of the section subjected to the actual stress distribution instead of calculating the compressive and flexural strengths independently and combining these through an interaction equation, as is the traditional uncoupled approach. Finally, a reliability study of the full slenderness range DSM approach is presented to determine resistance factors for the different stainless steel grades columns and beam-columnsPostprint (author's final draft

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Section: Experimental Data Collectionmentioning

confidence: 99%

Section: Fe Model Validation and Parametric Studiesmentioning

confidence: 99%

Section: Fe Model Validation and Parametric Studiesmentioning

confidence: 99%

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Full slenderness range DSM approach for stainless steel hollow cross-section columns and beam-columns

Arrayago

Rasmussen

Real

2017

Journal of Constructional Steel Research

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“…More recently, ferritic hollow section beam-column tests were published by Arrayago et al [9] and comparison to the design procedures showed their conservativeness.…”

Section: Current Methods Of Beam-column Behaviour Descriptionmentioning

confidence: 99%

Stainless Steel Beam-Columns Behaviour

Jandera¹,

Denny²,

Židlický³

2017

TOCIEJ

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There are several methods for considering the interaction between compression and bending for slender steel members. This is covered by the interaction formula and the general method, currently. For stainless steel, the structural design standards have been developed largely in-line and refer to carbon steel design guidelines. The current stainless steel interaction formula of axial force and bending moment given in EN 1993-1-4 was derived on limited results available. On the other hand, the general method may be used without any change for stainless steel according to the Eurocode despite the non-linear stress-strain behaviour, which obviously could lead to some drawbacks. Hence, the main objective of this paper is to compare the analysis results with existing Eurocode design formulas, the general method and some formula taken from experimental and parametric studies, showing their possible applicability, weaknesses and the need of further development. The conclusions are not applicable for stainless steel only, but they may be used for other non-linear materials such as aluminium alloys to some extent.

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“…Huang and Young [23,24] and Zhao et al [25,26] investigated the beam-column behaviour of lean duplex stainless steel SHS and RHS. Arrayago et al [27,28] conducted experimental study on ferritic stainless steel beam-columns, in order to assess current design rules for stainless steel beam-column members. The test results of ferritic stainless steel beams [29], stub columns [30] were also used in comparing with design specifications.…”

Section: Introductionmentioning

confidence: 99%

Design of austenitic and duplex stainless steel SHS and RHS beam-columns

Chen

Huang

Young

2019

Journal of Constructional Steel Research

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A finite element analysis and design of austenitic and duplex stainless steel tubular section beamcolumns is presented in this paper. The nonlinear finite element model was verified against experimental results of stainless steel tubular section beam-columns and beams. In this study, square and rectangular hollow sections were investigated. It was shown that the finite element model closely predicted the ultimate loads and failure modes of the tested beam-columns and beams. Hence, the finite element model was used for an extensive parametric study. The axial compressive strengths of the beam-column specimens predicted by the finite element analysis are compared with the design strengths calculated using the linear interaction equation and direct strength method. Reliability analysis was performed to assess the reliability of these design rules. It is shown that these design rules generally provide accurate and reliable predictions for stainless steel tubular section beamcolumns. Design recommendations for linear interaction equation and the direct strength methods are proposed for stainless steel SHS and RHS beam-columns. KeywordsBeam-columns; direct strength method; finite element analysis; rectangular and square hollow sections; stainless steel.

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Experimental study on ferritic stainless steel RHS and SHS beam-columns

Cited by 42 publications

References 14 publications

Full slenderness range DSM approach for stainless steel hollow cross-section columns and beam-columns

Full slenderness range DSM approach for stainless steel hollow cross-section columns and beam-columns

Stainless Steel Beam-Columns Behaviour

Design of austenitic and duplex stainless steel SHS and RHS beam-columns

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