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Stress analysis of perforated composite plates

机译：多孔复合板的应力分析

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Thin-walled plates and panels of various constructions find wide use as primary structural elements in simple and complex configuration. In aerospace structures, panels with variously shaped cutout are often used. The understanding of the effects of cutout on the load bearing capacity and stress concentration of such plates is very important in designing of complex structures. An analytical investigation is used to study the stress analysis of plates with different central cutout. Particular emphasis is placed on flat square plates subjected to a uni-axial tension load. The results based on analytical solution are compared with the results obtained using finite element methods. The main objective of this study is to demonstrate the accuracy and simplicity of presented analytical solution for stress analysis of composite plates with central cutout. The effect of cutout geometry (circular, square, or special cutouts), material properties (isotropic and ortho-tropic), fiber angles, and cutout curvature are considered. The results presented herein, indicated that the presented method can be used to determine accurately the stresses and stress concentration in composite plates with special shape cutouts.
机译：在简单和复杂的配置中，各种结构的薄壁板和面板被广泛用作主要结构元素。在航空航天结构中，经常使用具有各种形状的切口的面板。了解切口对这种板的承载能力和应力集中的影响在设计复杂结构时非常重要。分析研究用于研究具有不同中心切口的板的应力分析。特别要强调的是承受单轴拉力的方形平板。将基于解析解的结果与使用有限元方法获得的结果进行比较。这项研究的主要目的是证明用于中心切口的复合板应力分析的分析解决方案的准确性和简便性。考虑了切口几何形状（圆形，正方形或特殊切口），材料属性（各向同性和正交各向异性），纤维角度和切口曲率的影响。本文给出的结果表明，提出的方法可用于精确确定具有特殊形状切口的复合板的应力和应力集中。

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