The Interlaminar Stresses of Symmetric Composite Laminates
The Interlaminar Stresses of Symmetric Composite Laminates
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DOI：
10.1177/0731684404029352
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发表时间：
2004-07
影响因子：
3.1
通讯作者：
J. Tong;M. Xie;M. Shen
中科院分区：
文献类型：
--
作者：
J. Tong;M. Xie;M. Shen
给出了含树脂层复合材料层合板在轴向均匀应变作用下的三维有限元层间应力解。绘制了它们的三维分布图。在正交铺设层合板中，层间正应力和剪应力具有自由边效应。但剪切应力被发现在自由边缘区域显着降低，这表明一些符合边界应力条件。在角铺设层合板中，应力分布沿着延伸方向和宽度方向都有显著变化。在这种情况下，存在自由边缘效应和端部边缘效应，但是，峰值层间应力并不完全在边缘处，而是在边缘区域附近。
Three-dimensional finite element interlaminar stress solutions of composite laminates with resin layers under uniform axial strain are presented. Their three-dimensional distributions are plotted. In the cross-ply laminate, interlaminar normal and shear stresses are shown to be of free-edge effect. But shear stresses are found to be significantly reduced in the free-edge region, which show some conformity to the boundary stress conditions. In the angle-ply laminate, the stress distributions all vary significantly along both extension and width directions. There exists free-edge effects and end-edge effects in this case; however, the peaky interlaminar stresses are not exactly at the edges, but are near the edge regions.