Dynamic response of full-scale sandwich composite structures subject to air-blast loading
Dynamic response of full-scale sandwich composite structures subject to air-blast loading
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DOI：
10.1016/j.compositesa.2011.07.018
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发表时间：
2011-11-01
影响因子：
8.7
通讯作者：
Dear, J. P.
中科院分区：
文献类型：
--
作者：
Arora, H.;Hooper, P. A.;Dear, J. P.
玻璃纤维增强聚合物（GFRP）夹层结构（1.6米x1.3米）在8-14米的间隔距离受到30公斤C4炸药的冲击。实验为夹层板的响应提供了详细的数据，夹层板通常用于民用和军用结构，在这些结构中，空气爆炸载荷是一种严重的威胁。高速摄影，与数字图像相关（DIC），被用来监测这些结构在爆炸中的变形。故障机制在DIC数据中得到揭示，并在测试后切片中得到证实。实验数据提供的分析和计算模型的发展。此外，它强调了支持边界条件的爆炸缓解的重要性。在有限元模拟中进一步分析了这些发现，正如预期的那样，边界刚度对面板变形有很大影响。深入的参数研究正在进行中，以建立层次的各种因素，影响爆炸反应的夹层复合材料结构。(C)2011爱思唯尔有限公司保留所有权利。
Glass-fibre reinforced polymer (GFRP) sandwich structures (1.6 m x 1.3 m) were subject to 30 kg charges of C4 explosive at stand-off distances 8-14 m. Experiments provide detailed data for sandwich panel response, which are often used in civil and military structures, where air-blast loading represents a serious threat. High-speed photography, with digital image correlation (DIC), was employed to monitor the deformation of these structures during the blasts. Failure mechanisms were revealed in the DIC data, confirmed in post-test sectioning. The experimental data provides for the development of analytical and computational models. Moreover, it underlines the importance of support boundary conditions with regards to blast mitigation. These findings were analysed further in finite element simulations, where boundary stiffness was, as expected, shown to strongly influence the panel deformation. In-depth parametric studies are ongoing to establish the hierarchy of the various factors that influence the blast response of sandwich composite structures. (C) 2011 Elsevier Ltd. All rights reserved.