Performance of closed-cell aluminum foams subjected to impact loading
Performance of closed-cell aluminum foams subjected to impact loading
复制标题
闭孔泡沫铝在冲击载荷下的性能
DOI：
10.1016/j.msea.2012.11.094
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发表时间：
2013-05-15
期刊：
影响因子：
6.4
通讯作者：
Yao, G. C.
中科院分区：
文献类型：
--
作者：
Liu, H.;Cao, Z. K.;Yao, G. C.
对泡沫铝轴向破碎过程中的冲击行为、变形模式和吸能能力进行了实验研究。采用熔体过渡发泡法制备了两种不同成分的泡沫铝。用Instron 9250 HV冲击系统和150 J的冲击能量施加冲击。结果表明，动态冲击过程包括初始压缩和逐渐破碎两个阶段。在位移-载荷曲线中，峰值载荷的增强是由于微惯性效应。由于波的传播和反射，试件中存在两种变形模式。在冲击过程中，增加泡沫密度导致更高的比能量吸收值。6063铝合金的吸能能力比纯泡沫铝有上级的提高。(C)2013年由Elsevier B. V.出版
An experimental study has been conducted to examine the impact behavior, deformation mode and energy absorption ability during axial crushing of aluminum foams. Aluminum foams with two different components, manufactured by molten body transitional foaming process, were used in the experiment. Impacts were imparted with an Instron 9250HV impact system and with the impact energy of 150J. The results showed that the dynamic impact contains two steps: initial compression and gradual crushing. In the displacement-load curve, the enhancement of peak load was due to the micro-inertia effect. Two deformation modes existed in specimens as a result of wave propagation and reflection. During impact, the increasing foam density resulted in a higher value of specific energy absorption. The energy absorption ability of 6063 aluminum alloys was superior to that of the pure aluminum foam. (C) 2013 Published by Elsevier B.V.