Modelling the behaviour of composite sandwich structures when subject to air-blast loading
Modelling the behaviour of composite sandwich structures when subject to air-blast loading
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DOI：
10.1260/1750-9548.6.3.199
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发表时间：
2012-01-01
影响因子：
0.7
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.
大型玻璃纤维增强聚合物（GFRP）和碳纤维增强聚合物（CFRP）夹层结构（1.6米x1.3米）在14米的间隔距离处受到爆炸性空气冲击（100公斤TNT当量）。数字图像相关（DIC）被用来获得全场数据的背面每个变形的目标。为了进行比较，还对单位面积质量相当的钢板进行了相同的爆炸条件试验。然后使用Abaqus/Explicit中生成的有限元模型验证实验数据。数值计算结果与实验结果吻合较好，证实了CFRP板具有比GFRP板更优越的上级爆炸性能。此外，所有复合材料目标持续局部故障（更严重的GFRP目标），但保持其原始形状后爆炸。对于每个复合材料靶板，存在芯剪切破坏时，后蒙皮保持完整。
Large-scale glass fibre reinforced polymer (GFRP) and carbon fibre reinforced polymer (CFRP) sandwich structures (1.6 m x 1.3 m) were subject to explosive air blast (100 kg TNT equivalent) at stand-off distances of 14 m. Digital image correlation (DIC) was used to obtain full-field data for the rear-face of each deforming target. A steel plate of comparable mass per unit area was also subjected to the same blast conditions for comparison. The experimental data was then verified with finite element models generated in Abaqus/Explicit. Close agreement was obtained between the numerical and experimental results, confirming that the CFRP panels had a superior blast performance to the GFRP panels. Moreover all composite targets sustained localised failures (that were more severe in the GFRP targets) but retained their original shape post blast. The rear-skins remained intact for each composite target with core shear failure present.