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Stress analysis of laminated composite plates with a circular hole according to a single-layer higher-order model

机译：单层高阶模型的圆孔叠层复合板应力分析

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摘要

This paper presents a single-layer higher-order model for predicting the stresses at curved free boundaries of laminated composite plates subjected to inplane loading. The proposed model can automatically satisfy the continuity of transverse shear stresses at interfaces. Based on both the proposed model and the methodology of the discrete Kirchhoff plate bending element, a triangular finite element is also presented. Numerical examples of curved free-edge problems have been taken into account to illustrate the performance of the present approach. Numerical results showed that the proposed model is capable of predict inplane and interlaminar stresses around the circular hole. In addition, distribution of free-edge stress through-the-thickness of a laminate is also presented, which are usually unavailable in literature.
机译：本文提出了一种单层高阶模型，用于预测承受面内载荷的层合复合板弯曲自由边界处的应力。该模型可以自动满足界面处横向剪应力的连续性。基于所提出的离散基尔霍夫板弯曲单元的模型和方法，还提出了三角形有限元。已经考虑了弯曲的自由边缘问题的数值示例，以说明本方法的性能。数值结果表明，该模型能够预测圆孔周围的面内应力和层间应力。另外，还提出了层压板厚度范围内自由边缘应力的分布，这在文献中通常是不可用的。

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