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Influence of asymmetric hybridization on impact response of 3D orthogonal woven composites
Composites Science and Technology ( IF 9.1 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.compscitech.2020.108326
Sohail Ahmed , Xitao Zheng , Leilei Yan , Chun Zhang , Xuan Wang

Abstract The mechanical and failure behavior under high velocity impact of asymmetric hybrid three-dimensional orthogonal woven composite (3DWC) were investigated through experiments and finite element modeling. Two types of non-hybrid and one asymmetric hybrid 3DWCs panels were manufactured with the combination of carbon and Kevlar fiber tows and tested under different impact energies. The hybrid panels were impacted on both faces separately to analyze the directional behavior under impact loading. The energy absorption capability of the hybrid material is sufficiently increased when impacted on carbon face due to diversified failure behavior of carbon and Kevlar layers. Damage in Kevlar layers was due to fiber rupture and pull-out while in carbon layers, damage was induced by matrix cracking and brittle fiber failure. The impact response is simulated through continuum shell based finite element model using connector element technique. The proposed methodology gives a fair comparison with the experimental data in terms of failure behavior of the hybrid material during the impact process.

中文翻译:

非对称杂交对 3D 正交编织复合材料冲击响应的影响

摘要 通过实验和有限元建模研究了非对称混合三维正交编织复合材料(3DWC)在高速冲击下的力学和失效行为。两种类型的非混合和一种非对称混合 3DWC 面板是用碳纤维和 Kevlar 纤维丝束的组合制造的,并在不同的冲击能量下进行了测试。混合板分别在两个面上受到冲击,以分析冲击载荷下的方向行为。由于碳层和 Kevlar 层的多样化破坏行为,当撞击到碳表面时,混合材料的能量吸收能力得到了充分的提高。Kevlar 层的损坏是由于纤维断裂和拉出,而在碳层中,损坏是由基体开裂和脆性纤维破坏引起的。冲击响应是通过使用连接器单元技术的基于连续壳的有限元模型来模拟的。所提出的方法在冲击过程中混合材料的失效行为方面与实验数据进行了公平的比较。
更新日期:2020-10-01
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