Experimental study and parametric analysis on the stability behavior of 7A04 high-strength aluminum alloy angle columns under axial compression
Experimental study and parametric analysis on the stability behavior of 7A04 high-strength aluminum alloy angle columns under axial compression
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DOI：
10.1016/j.tws.2016.08.029
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发表时间：
2016-11-01
影响因子：
6.4
通讯作者：
Xing, H. J.
中科院分区：
文献类型：
--
作者：
Wang, Y. Q.;Wang, Z. X.;Xing, H. J.
对7A 04高强铝合金挤压柱的轴压屈曲性能进行了试验研究，设计了42个L形挤压柱试件。标本包括两个部分和七个细长比从15到100不等。将试验结果与美国铝合金设计手册、GB 50429-2007和欧洲规范9的设计结果进行了比较。利用通用有限元软件ANSYS建立了轴压试验试件的有限元模型，并利用本文的试验结果和文献中的其他试验结果进行了验证。利用该有限元模型，对7A 04角钢柱进行了大量的参数分析，以阐明角钢肢宽厚比、初始缺陷和材料强度对角钢柱屈曲抗力的影响。基于试验和有限元分析结果，提出了一种改进的设计方法，以更准确地预测7A 04高强铝合金柱的屈曲承载力。(C)2016爱思唯尔有限公司版权所有。
An experimental program including study has been conducted to investigate buckling behavior of 7A04 high-strength (HS) aluminum alloy columns under axial compression, in which 42 L-shaped extruded specimens were designed and tested. The specimens involved two sections and seven slenderness ratios varying from 15 to 100. The test results were compared with design results in accordance with American Aluminum Design Manual, GB 50429-2007 and Eurocode 9. A finite element (FE) model of the tested specimens under axial compression has been developed by using general finite element software ANSYS, and was verified by using the test results reported herein and other experimental results presented in the literature. By using this FE model, an extensive body of parametric analyses were conducted to clarify the effects of width-to-thickness ratio of angle legs, initial imperfections and material strengths on the buckling resistance of the 7A04 angle columns. Based on the test and FE analyses results, a modified design method was proposed for predicting the buckling resistance of 7A04 high-strength aluminum alloy columns more accurately. (C) 2016 Elsevier Ltd. All rights reserved.