Bending resistance of thin-walled multi-cell square tubes

Bending resistance of thin-walled multi-cell square tubes
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薄壁多格方管的抗弯性能

DOI:
10.1016/j.tws.2016.06.017
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发表时间:
2016-10
影响因子:
6.4
通讯作者:
Zhang Xiong
Zhang Xiong
中科院分区:
工程技术2区
文献类型:
--
作者:
Wang Zong;Li Zhenhuan;Zhang Xiong

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研究了多单元方管在三点弯曲载荷作用下的抗弯性能。在方管的纵向和横截面上引入隔板,形成多单元结构。采用非线性有限元程序对三点弯曲试验进行了数值模拟,并进行了试验验证。然后进行参数研究,以调查的弯曲阻力的细胞,负载条件和其他几何配置的数量的影响。结果表明,隔板数量对结构的抗弯性能有重要影响,隔板数量越多,吸能效率越高。对多胞室结构在横向荷载作用下的优化布置提出了一些有价值的建议。
The bending resistance of multi-cell square tubes under three-point bending is investigated in this study. Partition plates are introduced in longitudinal direction and cross-section of square tubes to form multi-cell structures. Numerical simulation of the three-point bending test is carried out by nonlinear finite element code and experimental test is conducted to validate the numerical model. Parametric studies are then performed to investigate the influence of the number of cells, load conditions and other geometrical configurations on the bending resistance. Results reveal that the number of partition plates has important influence on the bending resistance of the structure and more partition plates do not necessarily lead to high energy absorption efficiency. The optimum configurations of the structures are found out and some valuable suggestions are offered for multi-cell structures under transverse loading.
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