Plastic buckling of dented steel circular tubes under axial compression: An experimental study
Plastic buckling of dented steel circular tubes under axial compression: An experimental study
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DOI：
10.1016/j.tws.2015.02.018
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发表时间：
2015-07
影响因子：
6.4
通讯作者：
T. G. Ghazijahani;H. Jiao;D. Holloway
中科院分区：
文献类型：
--
作者：
T. G. Ghazijahani;H. Jiao;D. Holloway
本文研究了大的局部缺陷，已知的凹痕，对轴压短钢管的塑性屈曲承载力的影响。对这种短柱进行了总共11次试验。试件通过单独的工艺进行压入，随后通过压缩试验获得极限轴向承载力。不同深度的凹痕缺陷被引入到试样主体的不同位置。对试件的塑性屈曲模式和极限承载力进行了深入研究。针对不同的缺陷值和缺陷类型，对这种局部损伤对承载能力的不利影响进行了量化。
This paper examines the effect of large local imperfections, known asdents, on the plastic buckling capacity of short steel tubes under axial compression. A total of 11 tests on such short columns were carried out. The specimens were indented through a separate process and the ultimate axial capacity was subsequently obtained through compression tests. Dent imperfections with various depths were introduced to different locations on the body of the specimens. Plastic buckling modes as well as the ultimate capacity of the specimens were thoroughly investigated. The adverse effect of such a local damage on the load carrying capacity was quantified for different values and types of imperfections.