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Peridynamic unit cell homogenization for thermoelastic properties of heterogenous microstructures with defects

机译:周向单位单元均质化具有缺陷的异质微观结构的热弹性

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This study concerns the development of a peridynamic unit cell to predict the effective thermoelastic properties of micro-structures in the presence of many defects and voids, and complex heterogeneity. It permits arbitrary number of constituent materials as well as voids and cracks. The constituent materials can be orthotropic Voids and cracks can be modeled by simply breaking the peridynamic bonds between the material points. The periodic boundary conditions are applied in a natural way without any constraint conditions. Also, it leads to the determination of a damage matrix necessary for progressive failure analysis. The numerical results concern the verification of this approach by comparison with those reported in the literature, and its capability in the presence of many matrix cracks and debonds along the fiber-matrix interface.
机译:这项研究涉及在许多缺陷和空隙以及复杂的异质性存在下预测微结构的有效热弹性性质的围动态单元的发展。它允许任意数量的组成材料以及空隙和裂缝。组成材料可以是正交各向异性的空隙,并且可以通过简单地破坏材料点之间的周向动力键来模拟裂纹。周期性边界条件以自然方式应用,没有任何约束条件。此外,它还可以确定进行渐进式故障分析所需的损坏矩阵。数值结果与通过文献报道的方法进行比较验证了这种方法的有效性,以及在沿纤维-基体界面存在许多基体开裂和脱胶的情况下的能力。

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