Axial crushing of self-lock multi-cell tubes with foam filler and tube envelope
Axial crushing of self-lock multi-cell tubes with foam filler and tube envelope
复制标题
带泡沫填料和管壳的自锁多室管的轴向破碎
DOI：
10.1016/j.tws.2020.106847
复制
发表时间：
2020-10
影响因子：
6.4
通讯作者：
Zhang Xiong
中科院分区：
文献类型：
--
作者：
Zhang Hui;Zhang Xiong
提出了一种由开口构件组装而成的自锁式多室管作为能量吸收装置。大宽度自锁管由于其截面的开口特性，在轴向压溃载荷作用下可能产生整体屈曲模态，吸能性能变差。为了克服这一缺点，首先采用发泡聚苯乙烯（EPS）泡沫填料来改善结构变形的稳定性和增加能量吸收效率。实验结果表明，EPS泡沫的质量每增加4%，自锁管的吸能能力就增加20%左右。本文还对泡沫铝填充和圆管包覆等增强方法进行了数值模拟和分析。它们可以单独或同时使用。泡沫铝填充与圆管包覆相结合的吸能方式具有最高的吸能能力和效率。理论分析了泡沫铝填充和圆管包覆增强自锁管的平均破碎力，理论计算结果与数值计算结果吻合较好。最后，提出并解决了耐撞性优化问题，以探索自锁多室管的最佳增强构型。
A type of self-lock multi-cell tubes assembled by open section components is recently proposed to serve as energy absorbing devices. Due to the open feature of the section, the self-lock tubes with large width may develop global buckling mode under axial crushing and show much worse energy absorption performances. To overcome this drawback, expanded polystyrene (EPS) foam fillers are firstly employed to improve the stability of the structural deformation and to increase the energy absorption efficiency. Experiment results show that a 4% increase in mass by EPS foam leads to about 20% increase in energy absorption of the self-lock tube. Numerical analyses are also carried out to simulate the tests and analyze the structures with other enhancement methods including Al foam filling and tube enveloping. They may be employed separately or simultaneously. The combination method of Al foam filling and tube enveloping gets the highest energy absorption capacity and efficiency. Theoretical analysis is performed to predict the mean crushing force of self-lock tubes enhanced by Al foam filling and tube enveloping, and the theoretical results compare well with numerical results. Finally, crashworthiness optimization problems are proposed and solved to explore the optimal enhancement configurations of the self-lock multi-cell tubes.
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影响因子：
8.4
作者：
H. Yin;G. Wen;Shujuan Hou;Qixiang Qing
通讯作者：
H. Yin;G. Wen;Shujuan Hou;Qixiang Qing
影响因子：
2.7
作者：
S. Santosa;J. Banhart;T. Wierzbicki
通讯作者：
S. Santosa;J. Banhart;T. Wierzbicki
多孔碳纤维增强塑料方管的耐撞性多目标优化
影响因子：
6.4
作者：
Liu, Qiang;Liufu, Kangmin;Li, Qing
通讯作者：
Li, Qing
影响因子：
6.4
作者：
Zhang, Xiong;Wen, Zhuzhu;Zhang, Hui
通讯作者：
Zhang, Hui
影响因子：
4.7
作者：
S. Santosa;T. Wierzbicki
通讯作者：
S. Santosa;T. Wierzbicki