材料科学
复合材料
凯夫拉
有限元法
复合数
脆性
损伤容限
环氧树脂
电缆密封套
分层(地质)
开裂
结构工程
计算机科学
工程类
生物
构造学
古生物学
电信
俯冲
作者
Sohail Ahmed,Xiaojing Zheng,Leilei Yan,Chun Zhang,Xuan Wang
标识
DOI:10.1016/j.compscitech.2020.108326
摘要
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.
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