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Effects of honeycomb geometry on stress concentration due to defects

机译:蜂窝几何形状对缺陷引起的应力集中的影响

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In this study, to investigate the effects of honeycomb geometry on stress concentration due to defects, a symmetric hexagonal honeycomb core was developed and this was followed by performing a series of FEM numerical studies on stress concentration due to defects under uniaxial and biaxial loading. The simulations indicated that the degree of the stress concentration in the front of the defect is influenced by the geometric shape of defects and is also sensitive to anisotropy due to the honeycomb geometry. Furthermore, a new technique is proposed in which honeycomb structures with defects are replaced by orthotropic plates with an elliptical hole to evaluate the stress concentration. The validity of the approximation method is verified by the results of the numerical FEM analysis.
机译:在这项研究中,为了研究蜂窝几何形状对由于缺陷引起的应力集中的影响,开发了对称的六边形蜂窝状芯,然后对单轴和双轴载荷下由于缺陷引起的应力集中进行了一系列FEM数值研究。模拟表明,缺陷前部的应力集中程度受缺陷的几何形状影响,并且由于蜂窝的几何形状对各向异性也敏感。此外,提出了一种新技术,其中用具有椭圆孔的正交各向异性板代替具有缺陷的蜂窝结构来评估应力集中。数值有限元分析的结果验证了该近似方法的有效性。

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