Up to now, the notched strength of a composite laminate containing an inclined elliptical hole at its center has not yet been predicted by researchers due to the absence of an appropriate failure criterion and an analytical solution. In this study, this problem is tackled by using a finite-element-based procedure, developed previously by the authors, together with a modified point stress criterion. The predicted notched strengths of composite plates containing a central inclined elliptical hole agreed well with experimental results.

中文翻译：

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斜椭圆孔复合板强度预测

到目前为止，由于缺乏适当的失效准则和解析解，研究人员尚未预测中心包含倾斜椭圆孔的复合材料层压板的缺口强度。在这项研究中，通过使用作者先前开发的基于有限元的程序以及修改后的点应力准则来解决这个问题。包含中心倾斜椭圆孔的复合板的预测缺口强度与实验结果非常吻合。