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首页> 外文期刊>Journal of Materials Science >Damage evolution and energy absorption of E-glass/polypropylene laminates subjected to ballistic impact
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Damage evolution and energy absorption of E-glass/polypropylene laminates subjected to ballistic impact

机译：受到弹道冲击的E-玻璃/聚丙烯层压板的损伤演变和能量吸收

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摘要

High-velocity transverse impact of laminated fiber reinforced composites is of interest in military, marine and structural applications. The overall objective of this work was to investigate the behavior of laminated thermoplastic composites of varying thicknesses under high-velocity impact from an experimental and modeling viewpoint. In order to analyze this problem, a series of ballistic impact tests have been performed on plain weave E-glass/polypropylene (E-glass/PP) composites of different thicknesses using 0.30 and 0.50 caliber right-cylinder shaped projectiles. A gas gun with a sabot stripper mechanism was employed to impact the panels. In order to analyze the perforation mechanisms, ballistic limit and damage evaluation, an explicit three-dimensional finite element code LS-DYNA was used. Material model 162, a progressive failure model based on modified Hashin’s criteria, has been assigned to analyze failure of the laminate. The projectile was modeled using Material model 3 (MAT_PLASTIC_KINEMATIC). The laminates and the projectile were meshed using brick elements with single integration points. The impact velocity ranged from 187 to 332 m s−1. Good agreement between the numerical and experimental results was attained in terms of predicting ballistic limit, delamination and energy absorption of E-glass/PP laminate.
机译：层压纤维增强复合材料的高速横向冲击在军事，海洋和结构应用中引起关注。这项工作的总体目标是从实验和建模的角度研究在高速冲击下不同厚度的层压热塑性复合材料的行为。为了分析此问题，已使用0.30和0.50口径的直圆柱形弹丸对不同厚度的平纹E-玻璃/聚丙烯（E-玻璃/ PP）复合材料进行了一系列弹道冲击试验。使用具有木桶汽提器机构的气枪撞击面板。为了分析射孔机理，弹道极限和损伤评估，使用了显式三维有限元代码LS-DYNA。材料模型162是基于修改后的Hashin准则的渐进式失效模型，已被分配来分析层压板的失效。使用材料模型3（MAT_PLASTIC_KINEMATIC）对弹丸进行建模。使用具有单个积分点的砖单元将层压板和弹丸网格化。冲击速度为187〜332 m s -1 。在预测E-玻璃/ PP层压板的弹道极限，分层和能量吸收方面，在数值和实验结果之间取得了很好的一致性。

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