Quasi-static axial compression of thin-walled circular aluminium tubes
Quasi-static axial compression of thin-walled circular aluminium tubes
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DOI：
10.1016/s0020-7403(01)00031-5
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发表时间：
2001-09-01
影响因子：
7.3
通讯作者：
Grzebieta, RH
中科院分区：
文献类型：
--
作者：
Guillow, SR;Lu, G;Grzebieta, RH
本文对薄壁圆管的轴向压缩问题进行了进一步的实验研究。在收到的T5条件下，对圆形6060铝管进行了总共70次准静态试验。所考虑的D/t范围在先前的研究中扩大到D/t=10-450。在L/D小于或等于10的情况下观察到了崩溃模式，并开发了模式分类图。平均压碎力F-AV是无量纲的，经验公式为F-AV/M-P = 72.3（D/t）（0.32）。结果发现，轴对称和非对称模式的测试结果都位于一条曲线上。对F-AV的现有理论和我们的试验结果进行了全面的比较。这揭示了一些缺点，表明可能需要进一步的理论工作。发现F-MAX/F-AV的比率随着D/t比率的增加而显著增加。还简要考察了铝管填充不同密度聚氨酯泡沫的效果。(C)2001爱思唯尔科技有限公司版权所有。
This paper presents further experimental investigations into axial compression of thin-walled circular tubes, a classical problem studied for several decades. A total of 70 quasi-static tests were conducted on circular 6060 aluminium tubes in the T5, as-received condition. The range of D/t considered was expanded over previous studies to D/t=10-450. Collapse modes were observed for L/D less than or equal to 10 and a mode classification chart developed. The average crush force, F-AV, was non-dimensionalised and an empirical formula established as F-AV/M-P = 72.3(D/t)(0.32). It was found that test results for both axi-symmetric and non-symmetric modes lie on a single curve. Comprehensive comparisons have been made between existing theories and our test results for F-AV. This has revealed some shortcomings, suggesting that further theoretical work may be required. It was found that the ratio of F-MAX/F-AV increased substantially with an increase in the D/t ratio. The effect of filling aluminium tubes with different density polyurethane foam was also briefly examined. (C) 2001 Elsevier Science Ltd. All rights reserved.