The effects of foam filling on compressive response of hexagonal cell aluminum honeycombs under axial loading-experimental study
The effects of foam filling on compressive response of hexagonal cell aluminum honeycombs under axial loading-experimental study
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DOI：
10.1016/j.matdes.2009.09.030
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发表时间：
2010-03-01
影响因子：
8.4
通讯作者：
Sadeghi, M. Z.
中科院分区：
文献类型：
--
作者：
Nia, A. Alavi;Sadeghi, M. Z.
本文通过实验研究了泡沫填充对蜂窝板塑性行为和力学性能的影响。五种类型的AI 5052-H39蜂窝在裸和泡沫填充条件下进行准静态轴向压缩载荷。选择板，以便可以研究诸如单元尺寸、单元壁厚度和板厚度等参数对平均压碎强度、能量吸收能力和褶皱波长的影响。试验表明，泡沫填充使蜂窝板的平均抗压强度和能量吸收能力提高了300%，蜂窝密度越小，泡沫填充的效果越大。此外，泡沫填充板的平均压碎强度大于裸蜂窝和泡沫单独的平均压碎强度之和。泡沫填充蜂窝板的褶皱波长和致密化应变均小于裸蜂窝板。试验还表明，与理论公式不同的是，蜂窝板厚度影响蜂窝的平均抗压强度。(C)2009爱思唯尔有限公司保留所有权利。
In this paper the effects of foam filling of honeycomb panels on their plastic behavior and mechanical properties are studied experimentally. Five types of AI 5052-H39 honeycombs in bare and foam filled conditions are subjected to quasi-static axial compressive loading. The panels are selected so that the effects of parameters such as the cell size, the cell walls thickness and the panel thickness on the mean crushing strength, energy absorption capacity and the wavelength of the folds could be investigated. Tests show that foam filling of panels increases their mean crushing strength and energy absorption capacity up to 300% and the less the honeycomb density the greater the effect of foam filling. Furthermore, mean crushing strength of foam filled panels is larger than the sum of the mean crushing strengths of bare honeycomb and foam alone. The wavelength of folds and densification strain in foam filled panels are smaller than those of bare honeycombs. These tests also showed that unlike the theoretic formula the panel thickness influences the mean crushing strength of honeycomb. (C) 2009 Elsevier Ltd. All rights reserved.