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Edge effects connected with thin interphases in composite materials

机译:与复合材料中的薄相有关的边缘效应

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摘要

Different imperfect transmission conditions modelling a thin intermediate layer between two bonded materials in a dissimilar elastic strip are analysed from the point of view of possible free-edge effects. The type of imperfect model depends essentially on the mechanical properties of the interphase and can be classified as soft, comparable and stiff interfaces. Corresponding transmission conditions have been derived by asymptotic analysis. However, they are not valid, generally speaking, at a region near the free edge, where an additional boundary layer should be constructed. By using FEM the size of this region is estimated and all possible edge-effects phenomena are classified.
机译:从可能的自由边缘效应的角度,分析了不同的不完美的传输条件,这些条件在不同的弹性带中模拟了两种粘合材料之间的薄中间层。不完美模型的类型主要取决于相间的机械性能,可以分为软界面,可比较界面和硬界面。通过渐近分析得出了相应的传输条件。但是,通常来说,它们在自由边缘附近的区域是无效的,在该区域应构造附加的边界层。通过使用有限元法,可以估计该区域的大小,并对所有可能的边缘效应现象进行分类。

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