Analytical and numerical evaluation of the effective properties of macro fiber composite (MFC)

IF 3.7 3区材料科学 Q1 INSTRUMENTS & INSTRUMENTATION

Smart Materials and Structures Pub Date : 2024-07-10 DOI:10.1088/1361-665x/ad5bce

Zhiqiang Fu, Yiping Shen, Songlai Wang and Jian Li

引用次数: 0

Abstract

The piezoelectric fibers of Macro Fiber Composite (MFC) have a rectangular cross-section with an aspect ratio of 2. This heterogeneity poses challenges for micromechanical modeling to predict the effective mechanical properties. The High-Fidelity Generalized Method of Cells (HFGMCs) is commonly used to calculate the properties of composite materials. In this paper, a Modified High-Fidelity Generalized Method of Cells (MHFGMC) is proposed to analyze MFC properties, in which the interaction between subcells is considered by defining the quadratic directional coupling term and the shear connection matrix. The accuracy of the proposed MHFGMC model is verified by using the finite element method and experimental tests. The results show that the MHFGMC can accurately predict the effective mechanical properties of MFC, and the relative error of tensile properties compared to experimental results is within 2.29%. The MHFGMC significantly improve the accuracy of the HFGMC, the relative error of its shear modulus is decreased from 105.13% to 0.71%.

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宏观纤维复合材料（MFC）有效特性的分析和数值评估

宏纤维复合材料 (MFC) 的压电纤维具有长宽比为 2 的矩形横截面，这种异质性给预测有效机械性能的微机械建模带来了挑战。高保真通用单元法（HFGMCs）通常用于计算复合材料的性能。本文提出了一种修正的高保真广义单元法（MHFGMC）来分析 MFC 性能，其中通过定义二次方向耦合项和剪切连接矩阵来考虑子单元之间的相互作用。通过使用有限元方法和实验测试验证了所提出的 MHFGMC 模型的准确性。结果表明，MHFGMC 可以准确预测 MFC 的有效力学性能，拉伸性能与实验结果的相对误差在 2.29% 以内。MHFGMC 显著提高了 HFGMC 的精度，其剪切模量的相对误差从 105.13% 降至 0.71%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Smart Materials and Structures 工程技术-材料科学：综合

CiteScore

7.50

自引率

12.20%

发文量

317

审稿时长

3 months

期刊介绍： Smart Materials and Structures (SMS) is a multi-disciplinary engineering journal that explores the creation and utilization of novel forms of transduction. It is a leading journal in the area of smart materials and structures, publishing the most important results from different regions of the world, largely from Asia, Europe and North America. The results may be as disparate as the development of new materials and active composite systems, derived using theoretical predictions to complex structural systems, which generate new capabilities by incorporating enabling new smart material transducers. The theoretical predictions are usually accompanied with experimental verification, characterizing the performance of new structures and devices. These systems are examined from the nanoscale to the macroscopic. SMS has a Board of Associate Editors who are specialists in a multitude of areas, ensuring that reviews are fast, fair and performed by experts in all sub-disciplines of smart materials, systems and structures. A smart material is defined as any material that is capable of being controlled such that its response and properties change under a stimulus. A smart structure or system is capable of reacting to stimuli or the environment in a prescribed manner. SMS is committed to understanding, expanding and dissemination of knowledge in this subject matter.