Static and dynamic crushing responses of CFRP sandwich panels filled with different reinforced materials
Static and dynamic crushing responses of CFRP sandwich panels filled with different reinforced materials
复制标题
不同增强材料填充CFRP夹芯板的静态和动态压溃响应
DOI：
10.1016/j.matdes.2017.01.010
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发表时间：
2017-03-05
影响因子：
8.4
通讯作者：
Li, Qing
中科院分区：
文献类型：
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作者：
Zhang, Yanqin;Zong, Zhijian;Li, Qing
研究了不同增强材料填充的碳纤维增强塑料（CFRP）夹层板在准静态压缩和低速冲击载荷下的耐撞性。选取EPP泡沫、铝蜂窝、橡胶泡沫球和塑料空心球4种轻质填充材料，进行了一系列的静态和动态试验，研究了这4种材料夹层板的破坏机理、承载能力、能量吸收和缓冲性能。完全的芯材破碎有助于静态压缩下的负载阻力和能量吸收，使顶部和底部CFRP面板完好无损。在冲击试验中观察到三种不同的载荷-位移类别，分为无回弹（未填充）、不完全回弹（填充铝蜂窝和塑料球）和完全回弹（填充EPP和橡胶球）;冲击过程中，局部断裂和核心破碎是用于显著的能量吸收。填充铝蜂窝和塑料空心球的试样在静态压缩试验中表现出上级的能量吸收能力（分别为2.8和4.8 J/g），而填充铝蜂窝和EPP泡沫的试样在冲击试验中表现出上级的能量吸收能力（分别为0.8和0.9 J/g）。(C)2017爱思唯尔有限公司版权所有。
This study aims to investigate the crashworthiness of carbon fiber reinforced plastic (CFRP) sandwich panels filled with different reinforced materials under quasi-static compression and low velocity impact loading. Four lightweight filler materials (namely EPP foam, aluminum honeycomb, rubber foam balls and plastic hollow balls) were chosen and a series of static and dynamic tests were carried out to explore the damage mechanism, load bearing capacity, energy absorption and cushioning properties of these different sandwich panels. The complete core crushing contributed to the loading resistance and energy absorption under the static compression leaving the top and bottom CFRP facesheet intact. Three distinct load-displacement categories, classified as no rebound (unfilled), incomplete rebound (filled with aluminum honeycomb and plastic balls) and complete rebound (filled with EPP and rubber balls) were observed in the impact tests; the localized facesheet rupture and core crushing were dedicated to significant energy absorption during impact. The specimens filled with aluminum honeycomb and plastic hollow balls exhibited superior energy absorption capabilities (2.8 and 4.8 J/g, respectively) in the static compression testes, while the specimens filled with aluminum honeycomb and EPP foam exhibited superior capability of energy absorption (0.8 and 0.9 J/g, respectively) in the impact tests. (C) 2017 Elsevier Ltd. All rights reserved.