Assessing delamination initiation of angle-ply laminates from fiber and matrix properties
Assessing delamination initiation of angle-ply laminates from fiber and matrix properties
复制标题
从纤维和基体特性评估角度层压板的分层起始
DOI：
10.1177/0892705718799840
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发表时间：
2018-09
影响因子：
3.3
通讯作者：
Huang Z.-M.
中科院分区：
文献类型：
--
作者：
Gu J.J.;Huang Z.-M.
由于层合板基本上是通过基体从层合板粘结在一起的，因此它的任何分层都必须从基体失效开始。本文通过对基体失效的分析，预测了层合板分层的发生。本文用三维有限元法计算了单向拉伸下角铺设层合板的应力场。为了消除自由边附近的弱奇异性，将层合板中各层的应力相对于层合板厚度取平均。然后通过桥接模型得到基体中的均匀化应力，再根据复合材料中基体的应力集中系数将均匀化应力转化为真值。考虑了纤维与基体之间界面裂纹对真应力的影响。提出了一种只考虑基体真实应力和原始强度数据的分层判据。为了评估效率，预测和可用的实验数据之间的比较，一些角铺设层压板。找到了合理的相关性。
As a laminate is essentially bonded together from laminae by the matrix, any delamination of it must be initiated from a matrix failure. This article predicts the initiation of a laminate delamination through analyzing the matrix failure. A three-dimensional finite element approach is used to calculate the stress field of an angle-plied laminate under a uniaxial tension. The stresses in each lamina of the laminate are averaged with respect to the lamina thickness to eliminate a weak singularity near a free edge. Homogenized stresses in the matrix are then obtained through bridging model, which are further converted into true values by virtue of stress concentration factors of the matrix in the composite. Influence of any interface crack between the fiber and the matrix on the true stresses has been taken into account. A criterion for detecting the delamination initiation is proposed, which only involves the true stresses and the original strength data of the matrix. To assess the efficiency, comparisons between the predictions and available experiment data are made for a number of angle-plied laminates. Reasonable correlation has been found.
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影响因子：
3.9
作者：
A. Díaz;J. Caron
通讯作者：
A. Díaz;J. Caron
影响因子：
9.1
作者：
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影响因子：
3.1
作者：
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DOI：
10.1016/b978-0-444-87285-2.50006-6
发表时间：
1989
期刊：
--
影响因子：
--
作者：
Asd Wang
通讯作者：
Asd Wang
影响因子：
1.9
作者：
P. Vachon;V. Brailovski;P. Terriault
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P. Vachon;V. Brailovski;P. Terriault