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arXiv 1306.0421math-phcond-mat.softmath.MP
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非均匀Cauchy弹性材料的各向异性有效高阶响应

Anisotropic effective higher-order response of heterogeneous Cauchy elastic materials

Mattia Bacca, Francesco Dal Corso, Daniele Veber, Davide Bigoni

摘要:

由Bacca等人获得的均匀化结果(非均匀柯西弹性材料的均匀化导致Mindlin第二梯度弹性。第一部分:有效高阶本构张量的封闭形式。arXiv:1305.2365 Submitted,2013),以从非均质柯西弹性固体定义有效的第二梯度弹性材料,在此扩展到具有非各向同性惯性张量的相的情况。结果表明,均匀化材料的非局部本构张量既取决于RVE的惯性性质,也取决于有效局部弹性张量与矩阵局部弹性张量之间的差异。结果表明:(i.)复合材料可以被设计成产生局部各向同性但非局部正交各向异性;(ii.)正交各向异性非局部效应时,引入了一个稀疏分布的对齐的椭圆孔,并在极限情况下,裂纹均匀化。

英文摘要:

The homogenization results obtained by Bacca et al. (Homogenization of heterogeneous Cauchy-elastic materials leads to Mindlin second-gradient elasticity. Part I: Closed form expression for the effective higher-order constitutive tensor. arXiv:1305.2365 Submitted, 2013), to define effective second-gradient elastic materials from heterogeneous Cauchy elastic solids, are extended here to the case of phases having non-isotropic tensors of inertia. It is shown that the nonlocal constitutive tensor for the homogenized material depends on both the inertia properties of the RVE and the difference between the effective and the matrix local elastic tensors. Results show that: (i.) a composite material can be designed to result locally isotropic but nonlocally orthotropic; (ii.) orthotropic nonlocal effects are introduced when a dilute distribution of aligned elliptical holes and, in the limit case, of cracks is homogenized.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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