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

doi:10.19936/j.cnki.2096-8000.20260128.006

Abstract

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

CLC Number:

TB332

XU Xinyi, MA Lianhua, ZHOU Wei. Progressive damage analysis of unidirectional fiber composites under bending via direct multiscale method[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(1): 39-44.

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