The crush resistance of four-panel angle elements
The crush resistance of four-panel angle elements
复制标题
四片角元件的抗压强度
DOI：
10.1016/j.ijimpeng.2014.12.004
复制
发表时间：
2015-04
影响因子：
5.1
通讯作者：
Zhang Hui
中科院分区：
文献类型：
--
作者：
Zhang Xiong;Zhang Hui
四边形角单元在多单元截面中经常遇到。为了预测这种截面在轴向载荷下的能量吸收，必须建立这些元件可能的倒塌模式的理论模型。本文将四边形角单元分为四种类型：角单元、K形单元、X形单元和树形单元。首次利用LS-DYNA数值模拟研究了几何参数和触发器类型对这些单元的倒塌模式和抗压强度的影响。然后，建立了理论模型，最常见的发展模式的每一种类型的四面板角元件。对不同宽度、厚度和角度的单元进行了分析，验证了所提出的模型，理论预测与数值计算结果吻合良好。此外，还进行了两个K形单元多胞截面的轴向破碎试验，试验结果验证了本文数值和理论模型的良好精度。
Four-panel angle elements are frequently encountered in multi-cell sections. To predict the energy absorption of such sections under axial loading, theoretical models have to be established for possible collapse modes of these elements. In this paper, four-panel angle elements are classified into four types: corner element, K-shaped, X-shaped and tree-shaped element. The influence of geometric parameters and type of triggers on collapse modes and crush resistance of these elements was firstly investigated numerically by using LS-DYNA. Theoretical models were then established for most commonly developed collapse modes of each type of four-panel angle elements. Elements with different width, thickness and angles were analyzed to validate the proposed models and the theoretical predictions by these models showed good agreement with numerical results. In addition, axial crushing test of two multi-cell sections with K-shaped elements was carried out quasi-statically and the experimental results validated the good accuracy of the present numerical and theoretical models.
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影响因子：
6.4
作者：
M. Langseth;O. Hopperstad;A. Hanssen
通讯作者：
M. Langseth;O. Hopperstad;A. Hanssen
影响因子：
6.4
作者：
Zhang, Xiong;Cheng, Gengdong;Zhang, Hui
通讯作者：
Zhang, Hui
影响因子：
5.1
作者：
Shujuan Hou;Qing Li;S. Long;Xujing Yang;Wei Li
通讯作者：
Shujuan Hou;Qing Li;S. Long;Xujing Yang;Wei Li
影响因子：
5.1
作者：
Santosa, SP;Wierzbicki, T;Langseth, M
通讯作者：
Langseth, M
菱形和戈薇蜂窝抗压碎性能的理论和数值研究
影响因子：
6.3
作者：
Zhang, Xiong;Zhang, Hui
通讯作者：
Zhang, Hui