Experimental study and parametric analysis on the stability behavior of 7A04 high-strength aluminum alloy angle columns under axial compression

Wang, Y.Q.; Wang, Z.X.; Hu, Xiaoguang; Han, Jin Kyu; Hu, Xing

doi:10.1016/j.tws.2016.08.029

Cited by 69 publications

(17 citation statements)

References 5 publications

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“…Material test results showed that the 0.2% offset yield strength of WGJ steel at ambient temperature (f0.2) was 433.8 MPa, and the initial elastic modulus (E) was 196533 MPa, which will be used to determine the residual stress of welded I sections. The stress-strain curves shown in Figure 2 indicate that there are no visible yielding plateaus for WGJ steel under any temperature, which shows typical nonlinearity [27]. Reduction factors can be used to describe the effect of temperature on the strength and elastic modulus of steel.…”

Section: Main Sectionsmentioning

confidence: 99%

Residual Stress of Welded I Sections Fabricated From High Performance Steel: Experimental Investigation and Modelling

2019

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An experimental study was presented to investigate the magnitude and distribution of residual stresses i n welded I sections fabricated from a new type of high performance steel with high strength as well as improved fire and corrosion resistance. The residual stress of three I sections with various width-thickness ratios was measured by using sectioning method and more than 2000 original readings were obtained. The effects of width-thickness ratio and interaction of residual stress in the flange and web were clarified. It was found that compressive residual stress was strongly correlated with sectional dimensions, while tensile residual stress at the weld region or flange edge was less correlated with them. In addition, no interaction between the residual stress in the flange and web was identified. Based on the test results, a distribution model of residual stress was proposed which could well represent the experimental results. Finally, the magnitude of residual stresses in welded I sections fabricated from this new type of high performance steel was compared with that of high strength steel.

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Section: Main Sectionsmentioning

confidence: 99%

Residual Stress of Welded I Sections Fabricated From High Performance Steel: Experimental Investigation and Modelling

2019

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“…Eighteen experiments were conducted to investigate the structural behavior of high strength aluminum alloy extruded equal-leg angle section columns under axial compression; the studied grade of the alloy was 7A04-T6, which is an Al-Zn-Mg-Cu series high strength and ultra-hard aluminum alloy with a nominal yield strength (or 0.2% proof stress) of about 530 MPa (Wang et al 2016c). The same nominal cross-section size -equal angle 200×200×24 was used for all tests, as shown in Fig.…”

Section: Experimental Investigationmentioning

confidence: 99%

“…The initial geometric imperfections of all the specimens were measured prior to the column tests using the method set out in (Shi et al 2011), which was also employed in a previous testing program on pin-ended angle section columns (Wang et al 2016b). The initial geometric imperfections comprised out-of-straightness and twist, both captured through the measurements δ1, δ2, δ3 and δ4 illustrated in Fig.…”

Section: Initial Geometric Imperfectionsmentioning

confidence: 99%

“…14 and 15, respectively. Moreover, in a parallel study (Wang et al 2016b), the FE modeling approach employed in this manuscript was further validated for a wider range of angle cross-sections, but for members with pinned boundary condition.…”

Section: Validation Of the Fe Modelsmentioning

confidence: 99%

“…Zhao et al (2016) conducted experiments on sixteen 6082-T6 aluminum alloy angle section members to study their stability under eccentric compressive loads. Wang et al (2016b) tested a series of high strength aluminum alloy pin-ended angle section columns failing by flexural buckling, flexuraltorsional buckling and local buckling in order to assess the accuracy of existing design rules. New design methods were also established to determine the buckling resistances of angle section columns, based on the continuous strength method (CSM) (Su et al 2014) and the direct strength method (DSM) (Dinis et al 2010;Schafer 2008;Silvestre et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Study of Fixed-Ended High-Strength Aluminum Alloy Angle-Section Columns

Wang

Yun

et al. 2020

J. Struct. Eng.

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High strength aluminum alloys are emerging and gaining increasing prominence in structural engineering. The structural behavior and design of 7A04-T6 high strength aluminum alloy equal-leg angle section columns under axial compression are investigated in this study. Eighteen experiments on extruded high strength aluminum alloy angle section columns with various lengths were carried out. Complementary material tests and initial geometric imperfection measurements were also performed. The test setup, procedure and results, including failure modes, load-carrying capacities and load-end shortening responses, are fully reported. The test program was followed by a numerical study, where refined finite element (FE) models were first developed and validated against the test results and then utilized to carry out parametric analyses covering a wide range of crosssection dimensions and column lengths. Finally, the load-carrying capacities obtained from the tests and numerical analyses were used to evaluate the accuracy of existing design provisions in European, Chinese and American standards for aluminum alloy structures and the direct strength method (DSM).The results showed that the existing design methods generally yield good capacity predictions for Wang ZX, Wang YQ, Yun X, Gardner L and Hu XG. Experimental and numerical study of fixedended high strength aluminum alloy angle section columns. ASCE Journal of Structural Engineering, 2020.2 fixed-ended members failing by flexural buckling, but rather conservative and scattered predictions when failure is by flexural-torsional buckling. Improved resistance predictions were achieved through application of a revised DSM-based approach.

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Nucleation and Grain Refinement of 7A04 Aluminum Alloy Under a Low-Power Electromagnetic Pulse

Bai

Xing

et al. 2018

J. of Materi Eng and Perform

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Experimental study and parametric analysis on the stability behavior of 7A04 high-strength aluminum alloy angle columns under axial compression

Cited by 69 publications

References 5 publications

Residual Stress of Welded I Sections Fabricated From High Performance Steel: Experimental Investigation and Modelling

Residual Stress of Welded I Sections Fabricated From High Performance Steel: Experimental Investigation and Modelling

Experimental and Numerical Study of Fixed-Ended High-Strength Aluminum Alloy Angle-Section Columns

Nucleation and Grain Refinement of 7A04 Aluminum Alloy Under a Low-Power Electromagnetic Pulse

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