Damage analysis of pseudo-ductile thin-ply UD hybrid composites - A new analytical method
Damage analysis of pseudo-ductile thin-ply UD hybrid composites - A new analytical method
复制标题
DOI：
10.1016/j.compositesa.2014.11.006
复制
发表时间：
2015-02-01
影响因子：
8.7
通讯作者：
Wisnom, Michael R.
中科院分区：
文献类型：
--
作者：
Jalalvand, Meisam;Czel, Gergely;Wisnom, Michael R.
提出了一种预测单向混杂复合材料在拉伸载荷作用下所有可能的损伤模式及其应力应变响应的简单分析方法。为此，分别评估损伤模式（破碎、分层和最终破坏）所需的应力水平。然后，可以根据每种损伤模式所需应力的顺序来预测UD混合动力材料的损伤过程。利用所开发的分析方法，对一系列新的标准厚度玻璃/薄层碳杂化复合材料进行了测试，结果表明，该复合材料具有良好的伪延性拉伸响应，其伪延性应变为1.0%，直至最终破坏为止没有载荷下降。试验最佳铺层的屈服应力值大于1130 MPa。所提出的分析方法简单，运行速度快，结果准确，可用于设计具有所需拉伸响应的薄层UD混合层压板，并进行进一步的参数研究。(C) 2014 Elsevier Ltd.版权所有。
A new simple analytical approach for predicting all possible damage modes of Uni-Directional (UD) hybrid composites and their stress-strain response in tensile loading is proposed. To do so, the required stress level for the damage modes (fragmentation, delamination and final failure) are assessed separately. The damage process of the UD hybrid can then be predicted based on the order of the required stress for each damage mode. Using the developed analytical method, a new series of standard-thickness glass/thin-ply carbon hybrid composites was tested and a very good pseudo-ductile tensile response with 1.0% pseudo-ductile strain and no load drop until final failure was achieved. The yield stress value for the best tested layup was more than 1130 MPa. The proposed analytical method is simple, very fast to run and it gives accurate results that can be used for designing thin-ply UD hybrid laminates with the desired tensile response and for conducting further parametric studies. (C) 2014 Elsevier Ltd. All rights reserved.