Micromechanical modeling for fiber-reinforced composites based on element-based peridynamics

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-04-04 DOI:10.1016/j.compositesa.2025.108919

Lu Che , Shuo Liu , Binbin Zhang , Guodong Fang , Jun Liang

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Abstract

The microstructure of fiber-reinforced polymer (FRP) composites exhibits complex multiphase heterogeneity and inherent defects, posing challenges for the study of composite microstructures. This study proposes a micromechanical analysis framework for composite materials based on the element-based peridynamics (EBPD), which is used to predict the macroscopic mechanical properties and damage evolution process of composite structures. A microscale model with randomly distributed fibers and periodic boundary conditions is established within the framework of EBPD. The effective elastic constants and stress distribution status of representative volume element (RVE) are predicted by using the micromechanical model based on the EBPD. The accuracy and applicability of the proposed model are verified by comparing with the experimental results. Furthermore, the advantages of the EBPD model over the finite element method (FEM) pixel grid model in predicting stress and the initiation location of cracks within the microstructure of FRP composites have been evaluated through two numerical examples.

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基于单元动力学的纤维增强复合材料微力学建模

纤维增强聚合物（FRP）复合材料的微观结构表现出复杂的多相非均质性和固有缺陷，给复合材料微观结构的研究带来了挑战。本文提出了一种基于元素周动力学（EBPD）的复合材料细观力学分析框架，用于预测复合材料结构的宏观力学性能和损伤演化过程。在EBPD框架下，建立了具有随机分布纤维和周期边界条件的微尺度模型。利用基于EBPD的微力学模型，预测了典型体积元的有效弹性常数和应力分布状态。通过与实验结果的比较，验证了所提模型的准确性和适用性。此外，通过两个数值算例，评价了EBPD模型在预测FRP复合材料微观结构中的应力和裂纹起始位置方面优于有限元法（FEM）像素网格模型的优势。

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

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.