This article presents different micromechanical modelling techniques based on analytical and numerical approaches to determine the effective elastic and piezoelectric (piezoelastic) properties of graphene-based composite materials. Different types, orientations and shapes as well as different geometrical parameters of fiber reinforcement are considered for estimating the effective properties. The effective properties of composite are predicted with and without considering the strong covalent bond which provides interaction and in-plane stability of $2\text{D}$crystalline graphene or strong van der Wall forces formed between graphene layers and the matrix. It is revealed that the axial, transverse and shear effective piezoelastic properties of graphene reinforced piezoelectric composite (GRPC) are significantly enriched due to the incorporation of graphene into the epoxy matrix. The importance of incorporating graphene as nanofillers/interphase into the conventional epoxy matrix to form an advanced composite and its effective properties are illustrated while these results show excellent agreement with previously reported experimental estimates. These results reveal that due to incorporation of graphene nanofillers, there is a significant enhancement in effective properties of composite. The results would also help to recognize the most important material properties with respect to different shapes and orientation of reinforcements which influences the performance of system significantly. To confirm safety, robustness and sustainability of the structure, it is the most prior requirement to determine the effective properties of composites considering different parameters for the different static and structural analyses.

本文介绍了基于分析和数值方法的不同微机械建模技术，以确定石墨烯基复合材料的有效弹性和压电（压电弹性）性能。为了估计有效性能，考虑了纤维增强的不同类型，取向和形状以及不同的几何参数。预测复合材料的有效性能，不考虑是否存在强共价键，该共价键可提供相互作用和面内稳定性。$2\text{d}$结晶石墨烯或强范德华力在石墨烯层和基体之间形成。结果表明，石墨烯增强的压电复合材料（GRPC）的轴向，横向和剪切有效压电弹性特性由于石墨烯掺入环氧基体中而显着丰富。说明了将石墨烯作为纳米填料/中间相掺入常规环氧树脂基体中以形成高级复合材料及其有效性能的重要性，而这些结果表明与先前报道的实验估计非常吻合。这些结果表明，由于引入了石墨烯纳米填料，复合材料的有效性能有了显着提高。该结果还将有助于认识到与增强件的不同形状和方向有关的最重要的材料特性，这将显着影响系统的性能。为了确认结构的安全性，坚固性和可持续性，最重要的要求是确定复合材料的有效性能，并考虑针对不同静态和结构分析的不同参数。