Crashworthy characteristics of axially statically compressed thin-walled square CFRP composite tubes: experimental
Crashworthy characteristics of axially statically compressed thin-walled square CFRP composite tubes: experimental
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DOI：
10.1016/s0263-8223(03)00183-1
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发表时间：
2004-02-01
影响因子：
6.3
通讯作者：
Papapostolou, DP
中科院分区：
文献类型：
--
作者：
Mamalis, AG;Manolakos, DE;Papapostolou, DP
本文详细介绍了碳纤维增强塑料（CFRP）管在静态轴向压缩载荷下的碰撞行为、破坏模式和耐撞性特性的实验结果。试验试件的特点是材料组合的碳纤维在热固性环氧树脂增强编织织物的形式，他们被切断在不同的长度从三个相同的方形截面，但不同的厚度，层压板堆叠顺序和纤维体积含量的CFRP管。CFRP管在1000 kN负载能力的液压机中以静态测试的典型的非常低的应变速率压缩。最重要的试样的几何特征，如管的轴向长度，纵横比和壁厚上的压缩响应和崩溃模式的测试管的影响进行了彻底的分析。此外，还研究了层合材料的纤维体积含量和堆叠顺序等性能对薄壁管吸能能力的影响。着重从宏观和微观角度分析了复合材料圆管轴向破坏模式的力学机理，重点研究了复合材料圆管压缩过程中的碰撞吸能机理。(C)2003 Elsevier Ltd.保留所有权利。
In this paper the results of experimental works pertaining to the crash behaviour, collapse modes and crashworthiness characteristics of carbon fibre reinforced plastic (CFRP) tubes that were subjected to static axial compressive loading are presented in detail. The tested specimens were featured by a material combination of carbon fibres in the form of reinforcing woven fabric in thermosetting epoxy resin, and they were cut at various lengths from three CFRP tubes of the same square cross-section but different thickness, laminate stacking sequence and fibre volume content. CFRP tubes were compressed in a hydraulic press of 1000 kN loading capacity at very low-strain rate typical for static testing. The influence of the most important specimen geometric features such as the tube axial length, aspect ratio and wall thickness on the compressive response and collapse modes of the tested tubes is thoroughly analysed. In addition, the effect of the laminate material properties such as the fibre volume content and stacking sequence on the energy absorbing capability of the thin-wall tubes is also examined. Particular attention is paid on the analysis of the mechanics of the tube axial collapse modes from macroscopic and microscopic point of view, emphasizing on the mechanisms related to the crash energy absorption during the compression of the composite tubes. (C) 2003 Elsevier Ltd. All rights reserved.