复合材料科学与工程 ›› 2026, Vol. 0 ›› Issue (1): 39-44.DOI: 10.19936/j.cnki.2096-8000.20260128.006

• 基础与力学性能研究 • 上一篇    下一篇

基于直接多尺度法的单向纤维复合材料弯曲渐进损伤分析

许欣怡1, 马连华2*, 周伟1   

  1. 1.河北大学 质量技术监督学院 无损检测实验室,保定 071000;
    2.东莞理工学院 材料科学与工程学院 交叉科学研究中心,东莞 523000
  • 收稿日期:2024-11-26 出版日期:2026-01-28 发布日期:2026-03-12
  • 通讯作者: 马连华(1979—),男,博士,教授,硕士生导师,研究方向为复合材料多尺度力学及无损检测技术,malianhua@dgut.edu.cn。
  • 作者简介:许欣怡(1999—),女,硕士,研究方向为复合材料多尺度计算及声发射损伤监测。

Progressive damage analysis of unidirectional fiber composites under bending via direct multiscale method

XU Xinyi1, MA Lianhua2*, ZHOU Wei1   

  1. 1. Non-destructive Testing Laboratory, College of Quality and Technical Supervision, Hebei University, Baoding 071000, China;
    2. Research Institute of Interdisciplinary Science, School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523000, China
  • Received:2024-11-26 Online:2026-01-28 Published:2026-03-12

摘要: 基于ABAQUS仿真平台,本文采用一种高效的并行多尺度计算方法,即直接多尺度有限元(Direct FE2,DFE2)法,对碳纤维增强复合材料(Carbon Fiber Reinforced Polymer,CFRP)在弯曲载荷下的渐进损伤行为开展了数值研究。该方法实现了宏观尺度模型和微观尺度代表性体积元(Representative Volume Element,RVE)的同时计算。在考虑纤维在基体内随机分布的基础上,利用Python脚本实现了微观尺度RVE模型的参数化建模。基于ABAQUS内置的热-力耦合分析模块,通过编制UMATHT和UMAT子程序,比拟求解了基于局域化梯度增强模型的聚合物基体损伤问题。最后,DFE2和全尺寸直接数值模拟(Direct Numerical Simulation,DNS)的对比计算研究表明,DFE2方法在保证准确性的同时,显著提高了计算效率,从而大幅降低了计算成本。

关键词: 碳纤维复合材料, 损伤演化, 局域化梯度损伤模型, 直接多尺度方法, 有限元分析

Abstract: Based on the ABAQUS simulation platform, an efficient parallel multiscale method, direct FE2(DFE2), was used to investigate the progressive damage behavior of carbon fiber reinforced polymer (CFRP) under bending loads. The DFE2 method adopted in this study enables simultaneous computation of the macroscale model and the microscale representative volume element (RVE). Considering the random distribution of fibers within the matrix, a parameterized microscale RVE model was generated using using Python scripts. Using custom UMATHT and UMAT subroutines within ABAQUS's built-in thermo-mechanical coupling module, a simulation approach was developed to model damage in polymer matrix based on a localized gradient-enhanced model. Comparative analysis between DFE2 and direct numerical simulations (DNS) demonstrates that the DFE2 method significantly improves computational efficiency while maintaining accuracy, leading to a substantial reduction in computational costs.

Key words: carbon fiber reinforced composite, damage evolution, localizing gradient damage model, direct FE2, finite element analysis

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