Tensile failure of laminates containing an embedded wrinkle; numerical and experimental study
Tensile failure of laminates containing an embedded wrinkle; numerical and experimental study
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DOI：
10.1016/j.compositesa.2015.07.007
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发表时间：
2015-10-01
影响因子：
8.7
通讯作者：
Hallett, Stephen R.
中科院分区：
文献类型：
--
作者：
Mukhopadhyay, Supratik;Jones, Mike I.;Hallett, Stephen R.
研究了含离面纤维褶皱缺陷的准各向同性复合材料层合板在拉伸载荷作用下的失效问题。制造了具有受控纤维波纹度严重度的实验室测试样品。沿着记录载荷位移数据，定期拍摄高分辨率相机图像，以监测试验期间不同损伤机制的启动和相互作用。三维有限元模型建立以下的实际测试样本的几何形状。从测试中获得的信息用于开发用户材料子程序，在Abaqus/Explicit中实现，分别作为层内和层间失效的连续损伤和粘聚区模型。模拟的结果显示出很好的相关性与试验观察的故障载荷，损伤开始的位置和不同的损伤机制之间的相互作用的波度的情况下测试的范围。(C)2015爱思唯尔有限公司版权所有。
The failure of a quasi-isotropic composite laminate containing an embedded out-of-plane fibre wrinkle defect was investigated under tension loading. Laboratory test specimens with controlled severity of fibre waviness were manufactured. Along with recording load displacement data, high resolution camera images were taken at regular intervals which monitored the initiation and interaction of different damage mechanisms during test. Three-dimensional FE models were built following the geometry of actual test specimens. The information obtained from the tests was used to develop user material subroutines, implemented in Abaqus/Explicit as continuum damage and cohesive zone models for intra- and inter-ply failure respectively. The results of the simulations showed very good correlation with test observations in terms of failure load, location of damage initiation and interaction between different damage mechanisms for a range of waviness cases tested. (C) 2015 Elsevier Ltd. All rights reserved.