Abstract We have developed and validated a conceptually simple model capable of predicting the macroscale elastic properties of a platelet nanocomposite. The model allows for studying the individual and combined effect of the parameters with influence on those properties, namely nanofiller weight fraction, misalignment, dispersion quality, size distribution and nanofiller-matrix interfacial characteristics. The model shows a very good correlation with experimental results. The interfacial characteristics under different strain states are evaluated at the nanoscale by means of a cohesive model which considers out-of-plane strains and angular distortions, so that the full, strain-dependent elastic tensor can be calculated, allowing for homogenization and subsequent study of the effect of filler orientation, dispersion quality and size distribution on the elastic properties at the macroscale. The use of a low complexity nanoscale model allows us to conceptually and quantitatively explain the causes underlying the divergences between the expected and experimental macroscale material stiffness experimentally found by different researchers.

中文翻译：

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分析制造缺陷对片状纳米复合材料弹性性能的影响

摘要 我们开发并验证了一个概念上简单的模型，该模型能够预测片状纳米复合材料的宏观弹性特性。该模型允许研究影响这些特性的参数的单独和组合效应，即纳米填料重量分数、错位、分散质量、尺寸分布和纳米填料-基质界面特性。该模型显示出与实验结果非常好的相关性。通过考虑面外应变和角变形的内聚模型，在纳米级评估不同应变状态下的界面特性，从而可以计算出完整的应变相关弹性张量，从而进行均匀化和后续研究填料取向的影响，宏观尺度弹性特性的分散质量和尺寸分布。使用低复杂性纳米级模型使我们能够从概念上和定量地解释不同研究人员通过实验发现的预期和实验宏观材料刚度之间差异的根本原因。