Local buckling of structural steel shapes

Seif, Mina; Schafer, Benjamin W.

doi:10.1016/j.jcsr.2010.03.015

Cited by 128 publications

(96 citation statements)

References 4 publications

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“…where σ cr is the elastic buckling stress of the cross-section, which may be determined numerically using programs such as CUFSM [32] or using simplified analytical expressions [33].…”

Section: Comparison Of Test Results With Design Strengthsmentioning

confidence: 99%

Deformation-based design of aluminium alloy beams

Young²,

Gardner

2014

Engineering Structures

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“…where σ cr is the elastic buckling stress of the cross-section, which may be determined numerically using programs such as CUFSM [32] or using simplified analytical expressions [33].…”

Section: Comparison Of Test Results With Design Strengthsmentioning

confidence: 99%

Deformation-based design of aluminium alloy beams

Young²,

Gardner

2014

Engineering Structures

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“…by means of CUFSM (Li and Schafer, 2010)) or using simplified analytical expressions (Seif and Schafer, 2010).…”

Section: Continuous Strength Methods (Csm) For Indeterminate Aluminum mentioning

confidence: 99%

Continuous Beams of Aluminum Alloy Tubular Cross Sections. II: Parametric Study and Design

Young²,

Gardner

2015

J. Struct. Eng.

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Aluminum alloys are employed in a range of structural engineering applications, supported by many international design standards, but plastic design methods are generally not permitted. In the second part of this study, an extensive numerical parametric study is conducted using ABAQUS 6.10-1 (2010) to assess the effect of key parameters, such as cross-section slenderness, cross-section aspect ratio and moment gradient on the strength, strain hardening and The design strengths predicted by the three specifications were found to be rather conservative, while the predications of the latter three methods are more precise and consistent. The results reveal that strain hardening at the cross-sectional level and moment redistribution at the global system level have significant influence on the performance of stocky (plastic and compact Su, M., Young, B. and Gardner, L. (2015), "Continuous beams of aluminum alloy tubular cross sections. II: parametric study and design", Journal of Structural Engineering, ASCE, 141(9): 04014233.sections) aluminum alloy members, which should be accounted for in design. Following reliability analysis, proposals are made for revised design provisions.

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“…The direct strength method (DSM) has been pioneered by Schafer [16] and is based upon the idea that the reduction factor due to an instability related failure mode and hence the strength of a member can be determined on the basis of the relevant elastic critical buckling stresses for the instability modes considered and the yield stress. A specific piece of software based on the constrained Finite Strip Method named CUFSM [44] and analytical methods for the full cross-section [45] have been developed to determine the elastic buckling stresses. Their usage within the DSM is not mandatory but highly recommended to account for the non-linear behaviour of cold-formed steel members and exploit the potential of the DSM.…”

Section: The Direct Strength Methods (Dsm)mentioning

confidence: 99%

Effective width equations accounting for element interaction for cold-formed stainless steel square and rectangular hollow sections

Bock

Real

2015

Structures

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Rectangular hollow sections featuring high height-to-width (aspect) ratios have shown to offer improved ultimate capacity due to the effects of the interaction between the elements within the cross-section which are particularly significant for slender cross-sections (class 4) undergoing local buckling. The European design rules dealing with stainless steel, EN 1993-1-4 [1], utilises the concept of cross-section classification and the effective width method for the design of slender cross-sections susceptible to local buckling neglecting such interaction effects, hence resulting in conservative predictions. This paper examines the benefits of element interaction effects on cold-formed ferritic stainless steel compressed sections on the basis of carefully validated finite element models. Following parametric studies, the applicability of various alternative design approaches accounting for element interaction to ferritic stainless steel is assessed and effective width curves, as well as a Class 3 limiting slenderness equation, are derived herein as an explicit function of the aspect ratio. Comparisons with the loads achieved in the FE models have shown that the proposed effective width equations allowing for the benefits of element interaction improve capacity predictions making design more cost-effective. Highlights:Numerical modelling of cold-formed ferritic stainless steel stub columns. Study of the influence of some key parameters on the numerical response. Successful validation of the scope of various methods to cover ferritic steel. Incorporation of element interaction effects into the effective width formulation. Reliability analysis and validation of the proposed method against existing tests.

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Local buckling of structural steel shapes

Cited by 128 publications

References 4 publications

Deformation-based design of aluminium alloy beams

Deformation-based design of aluminium alloy beams

Continuous Beams of Aluminum Alloy Tubular Cross Sections. II: Parametric Study and Design

Effective width equations accounting for element interaction for cold-formed stainless steel square and rectangular hollow sections

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