Energy absorption of multi-cell stub columns under axial compression
Energy absorption of multi-cell stub columns under axial compression
复制标题
轴向压缩下多单元短柱的能量吸收
DOI：
10.1016/j.tws.2013.03.014
复制
发表时间：
2013-07-01
影响因子：
6.4
通讯作者：
Zhang, Hui
中科院分区：
文献类型：
--
作者：
Zhang, Xiong;Zhang, Hui
在轴向压缩下，多单元金属柱比单单元金属柱具有更高的能量吸收效率。然而，对它们的实验研究和理论分析却相对较少。本文对不同截面的多室柱进行了准静力轴压试验。研究和验证了多电池截面比单电池在能量吸收效率方面的显著优势。对压缩试验进行了数值模拟，数值模拟结果与试验结果吻合较好。提出了基于本构单元法的理论分析方法来预测多单元柱的抗压强度，理论预测结果与试验和数值计算结果吻合较好。(C)2013爱思唯尔有限公司。保留所有权利。
Multi-cell metal columns were found to be much more efficient in energy absorption than single-cell columns under axial compression. However, the experimental investigations and theoretical analyses of them are relatively few. In this paper, the quasi-static axial compression tests are carried out for multi-cell columns with different sections. The significant advantage of multi-cell sections over single cell in energy absorption efficiency is investigated and validated. Numerical simulations are also conducted to simulate the compression tests and the numerical results show a very good agreement with experiment. Theoretial analyses based on constitutive element method are proposed to predict the crush resistance of multi-cell columns and the theoretical predictions compare very well with the experimental and numerical results. (C) 2013 Elsevier Ltd. All rights reserved.