Collapse behaviour of aluminium plates

Little, G.H.

doi:10.1016/0020-7403(82)90019-4

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…The analysis included the effects of plate geometric imperfections, the variation of yield stress around a section, the stress-strain characteristics of the material forming the section and the residual stress to study the nonlinear local buckling behaviour of square hollow section columns. The analysis was compared with the results of Mofflin (1983) for the axial compression behaviour of a square box section at different plate slenderness values and also compared with the results of Little (1982) ec;centricity loading, as also reported by Rhodes (1991). For plain channels, the nominal widths of the flange and web were 55mm and 140mm respectively, and the plate thickness was 1.5mm.…”

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confidence: 99%

Behaviour and Design of Cold-Formed Channel Columns

Young

Rasmussen

1999

Advances in Steel Structures (ICASS '99)

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Australia 1997 SYNOPSISThe behaviour of fixed-ended and pin-ended singly symmetric columns is investigated experimentally and theoretically in this thesis. It is shown that local buckling does not induce overall bending of fixed-ended singly symmetric columns, as it does of pin-ended singly symmetric columns. Consequently, local buckling has a fundamentally different effect on the behaviour of fixed-ended and pin-ended singly symmetric columns. These fundamentally different effects of local buckling lead to inconsistencies in traditional design approaches which account for support conditions solely by using effe.ctive lengths. Therefore, improved design recommendations for fixed-ended singly symmetric columns are proposed in this thesis.An experimental investigation on cold-formed channel columns compressed between fixed and pinned ends is presented in this thesis! A series of tests was performed on plain and lipped / channels brake-pressed from high strength structural steel sheets. Four different cross-section geometries were tested over a range of lengths which involved pure local buckling, distortional buckling as well as overall flexural buckling and flexural-torsional buckling. The different effects of local buckling on the behaviour of fixed-ended and pin-ended channels were investigated by comparing strengths, load-shortening and load-deflection curves, as well as longitudinal profiles of buckling deformations. Geometric imperfections were measured on nearly all test specimens oefore testing as well as the material properties and residual stresses were also measured. The experimental local buckling loads of the fixed-ended tests were determined and shown to be in excellent agreement with the theoretical local buckling loads obtained using an elastic finite strip buckling analysis .. A test rig was developed for the test program, such that detailed deformation profiles of the test specimens were succ~ssfully obtained during testing. Fixed-ended bearings were used which allowed measurements of the axial load and the bending moments about two perpendicular axes.A theory is described for the bifurcation analysis of locally buckled members by deriving the governing equations for the fundamental and bifurcated states. The analysis uses elastic and inelastic geometric nonlinear finite strip buckling analyses to determine the tangent rigidities of ,.,... the locally buckled section The tangent rigidities are substituted into the equations for overall flexural and flexural-torsional buckling to obtain the bifurcation loads. The effect of yield~g is highlighted through a parametric study. The members are subject to pure compression and assumed to be geometrically perfect in the overall sense. It is shown using the fundamental state equations that fixed-ended singly symmetric columns exhibit overall bifurcation behaviour while pin-ended columns do not. The overall bifurcation loads obtained from the analysis are compared with tests of fixed-ended channel columns. The variation of the bifurcation loads with the leng...

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confidence: 99%

Behaviour and Design of Cold-Formed Channel Columns

Young

Rasmussen

1999

Advances in Steel Structures (ICASS '99)

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“…Little [1] analyzed the collapse behavior of simply supported rectangular aluminum plates, subjected to uniaxial compressive load. The effect of plate slenderness, initial imperfections and stress-strain curve knee factor on the ultimate capacity are investigated.…”

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confidence: 99%

Effect of geometrical properties of aluminum extrusion on post-buckling behaviour of stiffened panels in marine applications

Elmalaki

Saad-Eldeen

El-Kilani

2021

Port-Said Engineering Research Journal

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The aim of the present paper is to define guidelines for the appropriate selection of the optimal geometrical characteristics for different aluminum extruded profiles based on the ultimate load carrying capacity as well as the post-collapse deformed shape of stiffened panels. A series of finite element analysis has been conducted for stiffened aluminum panels subjected to uniaxial compressive load; the master model has been validated based on full-scale experimental test results. The effect of open and closed section dimensions on the ultimate compressive capacity has been investigated. The analyses are performed for several cross-sections classified in groups, all with the same plate and column slenderness. The numerical results obtained are compared with the design capacity according to European standard for aluminum structures, Eurocode 9. Based on the comparative analysis, several concluding remarks ad recommendations which are benefit both design and repair strategies are summarized, and a criterion has been proposed for selecting the best cross-section considering both load carrying capacity and cross-section weight.

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Analytical calculation model for unstiffened elements with nonlinear stress‐strain relationships under uniform compression

2009

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This paper presents an improved analytical calculation model for unstiffened elements with nonlinear stress‐strain relationships (e.g. aluminium and stainless steel) subjected to uniform in‐plane compression. The model takes material nonlinearity into account by means of the Ramberg‐Osgood constitutive law. It is based on the results of a numerical parametric study of the load‐carrying behaviour of unstiffened elements. A comparative study shows good agreement between test results and analytically determined strengths according to the new calculation model.

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Collapse behaviour of aluminium plates

Cited by 7 publications

References 3 publications

Behaviour and Design of Cold-Formed Channel Columns

Behaviour and Design of Cold-Formed Channel Columns

Effect of geometrical properties of aluminum extrusion on post-buckling behaviour of stiffened panels in marine applications

Analytical calculation model for unstiffened elements with nonlinear stress‐strain relationships under uniform compression

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