Axial crushing of embedded multi-cell tubes
Axial crushing of embedded multi-cell tubes
复制标题
嵌入式多细胞管的轴向破碎
DOI：
10.1016/j.ijmecsci.2017.07.019
复制
发表时间：
2017
影响因子：
7.3
通讯作者：
Zhang Hui
中科院分区：
文献类型：
--
作者：
Zhang Xiong;Leng Kehua;Zhang Hui
研究了一种新型嵌入式多单元（EMC）管的轴向抗压性能。首先进行了准静态试验，以研究空方管和EMC管的变形和力响应。定量分析了电磁兼容管的挤压力分量。采用非线性显式有限元法对破碎过程进行了数值模拟，模拟结果与实验结果吻合较好。利用实验验证的有限元模型，对不同结构的埋管吸能性能进行了参数研究。最后，通过理论分析，分析了整个结构的抗压强度的组成部分，并推导出预测EMC管的平均破碎力的表达式。理论预测与实验和数值计算结果吻合良好。
The axial crushing resistance of a new type of embedded multi-cell (EMC) tubes is investigated in this paper. Quasi-static tests are carried out first to investigate the deformation and force response of both empty square tubes and EMC tubes. The components of the crush force of EMC tubes are analyzed quantitatively. Nonlinear explicit finite element method is then employed to simulate the crushing process and the numerical results compare well with experiment. By using the FE model validated by experiment, parametric study is then performed to investigate the energy absorption performance of embedded tubes with various configurations. Finally, theoretical analysis is conducted to analyze the components of crush resistance of the whole structure and an expression is derived to predict the mean crushing force of EMC tubes. Theoretical predictions are in good agreement with experimental and numerical results.