The addition of nanofillers to composites has attracted great attention since it adds multifunctional potential. However, the presence of nanofillers inside a composite may cause a more complex response in many situations, e.g. damage accumulation processes, and this response poses extra challenges in the development of reliable numerical approaches. In this work, a three-step multiscale modelling strategy was used to investigate the mechanical properties and damage accumulation of plain-weave aramid-epoxy composites with hybrid nanofillers (carbon nanotubes and graphene nanoplatelets). First, the mean-field method was employed in a microscale model to provide the elastic modulus of the matrix with nanofillers inside. The mechanical properties of such a matrix were then used to predict the global mechanical properties of aramid-epoxy composite using mesoscale models. Finally, those predictions were added as input to a homogeneous material model used to replicate a more complex loading condition (low-velocity tests), for which the direct use of the mesoscale approach is not feasible. In the latter, the mechanical properties of aramid-epoxy composite with nanofillers have been modelled using MAT_162 in LS-DYNA. The agreement between the experiments and simulations with regards to the loading curves and damage phenomena can thus validate the presented approach. In addition, the effect of nanofillers on the mechanical properties and damage evolution of the woven composites in low-velocity impact has been discussed. Finally, the present work can be helpful to improve the awareness in the design of innovative materials by means of predictive modelling approaches.

将纳米填料添加到复合材料中已经引起了极大的关注，因为它增加了多功能潜力。然而，复合材料中纳米填料的存在可能会在许多情况下引起更复杂的响应，例如损伤累积过程，并且这种响应对开发可靠的数值方法提出了额外的挑战。在这项工作中，三步多尺度建模策略用于研究具有混合纳米填料（碳纳米管和石墨烯纳米片）的平纹芳纶环氧树脂复合材料的机械性能和损伤累积。首先，在微尺度模型中采用平均场法来提供弹性模量内部含有纳米填料的基质。然后使用这种基体的机械性能，使用中尺度模型预测芳纶-环氧树脂复合材料的整体机械性能。最后，将这些预测作为输入添加到用于复制更复杂的加载条件（低速测试）的均质材料模型中，直接使用中尺度方法是不可行的。在后者中，使用 LS-DYNA 中的 MAT_162 模拟了具有纳米填料的芳纶-环氧树脂复合材料的机械性能。因此，在加载曲线和损坏现象方面，实验和模拟之间的一致性可以验证所提出的方法。此外，还讨论了纳米填料对低速冲击下编织复合材料的机械性能和损伤演变的影响。最后，