Abstract The mechanical properties of rGO/Al composites, considering the damage and failure behaviours, are studied by finite element analysis in this paper. A numerical 3D structural model of the bulk reduced graphene oxide (rGO) nanosheets with two different lateral sizes (0.23 μm and 1.1 μm) is created based on AFM images. A representative volume element with 3D realistic microstructure was used to represent the selected composite microstructure. The 3D program developed can predict the elasto-plastic response and fracture behaviour of the actual rGO/Al composites. Based on the 3D structural models, the simulated stress–strain curve and the fracture morphology were verified by the experimental results. The numerical results can be used to provide insight into the deformation and fracture mechanisms of rGO/Al composites.

中文翻译：

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石墨烯增强铝基纳米层压复合材料的变形和断裂模拟

摘要 本文通过有限元分析研究了rGO/Al 复合材料的力学性能，同时考虑了损伤和失效行为。基于 AFM 图像创建了具有两种不同横向尺寸（0.23 μm 和 1.1 μm）的体还原氧化石墨烯 (rGO) 纳米片的数值 3D 结构模型。具有 3D 逼真微观结构的代表性体积元素用于表示选定的复合微观结构。开发的 3D 程序可以预测实际 rGO/Al 复合材料的弹塑性响应和断裂行为。基于3D结构模型，模拟的应力-应变曲线和断裂形态通过实验结果进行验证。数值结果可用于深入了解 rGO/Al 复合材料的变形和断裂机制。