Compressive buckling strength of extruded aluminium alloy I-section columns with fixed-pinned end conditions

Wang, Y.Q.; Yuan, Hongyong; Chang, Tianqing; Du, Xin; Yu, Min

doi:10.1016/j.tws.2017.06.034

Cited by 46 publications

(17 citation statements)

References 22 publications

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“…Wang et al [53] focussed on the reliability level of current design rules on CHSs columns, while Adeoti et al [62] expanded the investigation on columns formed by H-sections and RHSs. Wang et al [63] studied L-shaped columns manufactured by 7A04 high-strength aluminium alloy, whereas Wang et al [64] focussed on I-section columns. Feng et al [56] investigated the buckling behaviour of perforated columns, suggesting that a properly modified Direct Strength Method (DSM) [65], a design approach suggested for cold-formed steel sections, could be suitable for the design of CHS columns with circular openings.…”

Section: Flexural Bucklingmentioning

confidence: 99%

Aluminium alloys as structural material: A review of research

Georgantzia

Gkantou

Kamaris

2021

Engineering Structures

276

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Section: Flexural Bucklingmentioning

confidence: 99%

Aluminium alloys as structural material: A review of research

Georgantzia

Gkantou

Kamaris

2021

Engineering Structures

276

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“…In line with past studies [23,30], the initial local geometric imperfection distribution pattern was assumed to be in the form of the lowest buckling mode shape and was incorporated in the models. Moreover, an initial imperfection sensitivity study was performed considering three fractions of the plate thickness, t: t/10, t/15 and t/50 [31][32][33]. In line with past studies [23,30], the local geometric imperfection amplitudes were taken as a function of the plate thickness, because the local buckling mode has a half-wavelength of the same order of magnitude as the thickness of the constituent plate elements [10].…”

Section: Initial Geometric Imperfections and Nonlinear Analysismentioning

confidence: 99%

Numerical Modelling and Design of Aluminium Alloy Angles under Uniform Compression

2021

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Research studies have been reported on aluminium alloy tubular and doubly symmetric open cross-sections, whilst studies on angle cross-sections remain limited. This paper presents a comprehensive numerical study on the response of aluminium alloy angle stub columns. Finite element models are developed following a series of modelling assumptions. Geometrically and materially nonlinear analyses with imperfections included are executed, and the obtained results are validated against experimental data available in the literature. Subsequently, a parametric study is carried out to investigate the local buckling behaviour of aluminium alloy angles. For this purpose, a broad range of cross-sectional aspect ratios, slenderness and two types of structural aluminium alloys are considered. Their effect on the cross-sectional behaviour and strength is discussed. Moreover, the numerically obtained ultimate strengths together with literature test data are utilised to assess the applicability of the European design standards, the American Aluminium Design Manual and the Continuous Strength Method to aluminium alloy angles. The suitability of the Direct Strength Method is also evaluated and a modified method is proposed to improve the accuracy of the strength predictions.

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“…The advantages of aluminium as a material over other traditional construction materials has led many researchers to investigate the response of aluminium alloy structures under different loading conditions. Existing experimental research on aluminium alloy structures shows that focus has been given to the isolated fundamental cases of tension [2], compression of short [3][4][5][6][7][8][9][10] and long [9,[11][12][13][14][15][16] columns and uniaxial bending [5,[17][18][19][20][21][22][23][24][25], whilst leaving biaxial bending (i.e. bending about the major and minor axis simultaneously) unexplored.…”

Section: Introductionmentioning

confidence: 99%

Aluminium SHS and RHS subjected to biaxial bending: Experimental testing, modelling and design recommendations

Bock

Theofanous

Dirar

et al. 2021

Engineering Structures

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Traditionally, experimental research on structural members has focused on the isolated fundamental cases of pure compression/tension, major axis bending or minor axis bending, whilst beam columns under compression and uniaxial bending have also been tested. Biaxial bending has received less experimental attention and it has always been assumed that tests on the idealised cases of major axis bending and minor axis bending can be used together with numerical predictions of biaxial bending to determine suitable interaction curves. This investigation reports an experimental study on aluminium flexural members with variable angles between the plane of bending and the major axis of the cross-section. Cross-sections with various thicknesses and hence plate slenderness values are considered. The experimental results are used to validate a numerical model that allows a large number of cross-sectional dimensions and loading cases to be examined. Following parametric studies and generation of numerical data, the design provisions for biaxial bending specified in EN 1999-1-1 are compared against the predictions provided by the Continuous Strength Method (CSM) and a new proposed method. The comparison shows that EN 1999-1-1 provides overly conservative results with biaxial bending resistances underestimated by approximately 17%. Both the CSM and the proposed method are observed to significantly improve predictions by reducing, on average, underestimations down to 3% and 1%, respectively, and consequently enabling a better usage of the material and ultimately a more economic and sustainable design.

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Compressive buckling strength of extruded aluminium alloy I-section columns with fixed-pinned end conditions

Cited by 46 publications

References 22 publications

Aluminium alloys as structural material: A review of research

Aluminium alloys as structural material: A review of research

Numerical Modelling and Design of Aluminium Alloy Angles under Uniform Compression

Aluminium SHS and RHS subjected to biaxial bending: Experimental testing, modelling and design recommendations

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