Stability of 6082-T6 aluminium alloy columns with H-section and rectangular hollow sections
Stability of 6082-T6 aluminium alloy columns with H-section and rectangular hollow sections
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DOI：
10.1016/j.tws.2014.12.002
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发表时间：
2015-04-01
影响因子：
6.4
通讯作者：
Zhai, Ximei
中科院分区：
文献类型：
--
作者：
Adeoti, Guy Oyeniran;Fan, Feng;Zhai, Ximei
本文提出了一个柱曲线公式，它能给出6082-T6铝合金挤压构件在轴压下发生弯曲屈曲破坏时的精确强度。该公式使用佩里型曲线。材料性能用Ramberg-Osgood参数（E、f（0.2）和n）表示，这些参数是从成品的拉伸试样试验中获得的。对30个6082-T6铝合金H形截面和矩形空心截面试件进行了轴压试验。利用有限元软件ANSYS建立了数值模型，并与实验结果进行了对比验证。确定了稳定系数，并与美国规范（美国铝合金结构规范）、欧洲规范9（欧洲铝合金结构设计规范）、中国钢结构设计规范（GB 50017 -2003）和中国铝合金结构设计规范（GB 50429 -2007）的稳定系数进行了比较。推导了试验柱曲线，并与不同规范的柱曲线进行了比较。最后给出了本试验结果与Rasmussen和Rondal（2000）[1]结果的比较。(C)2014爱思唯尔有限公司版权所有。
This paper presents a column curve formula capable of producing accurate strengths for extruded members of 6082-T6 aluminium-alloys failing by flexural buckling under axial compression. The formula uses the Perry-type curve. The material properties are expressed in terms of the Ramberg-Osgood parameters (E, f(0.2), and n), obtained from tensile coupon tests of the finished product. 30 specimens of 6082-T6 aluminium alloy, including 15 H-section and 15 rectangular hollow-sections were tested under axial load using a pin-ended condition. Numerical models were then developed using the FE software ANSYS, and were verified against the experimental results. The coefficient of stability was determined and compared with the coefficients of stability from different codes such as American standard (American specification for aluminium structures), Eurocode 9 (European code for design of aluminium structures), GB50017-2003 (Chinese Code for design of steel structures) and GB50429-2007 (Chinese Code for the design of Aluminium Structures). The experiment column curve was then derived and compared with the curves of columns of different codes. Lastly a comparison between the present test results and the results of Rasmussen and Rondal (2000) [1] is presented. (C) 2014 Elsevier Ltd. All rights reserved.