Simulation and analysis of delamination damage propagation in CFRP structures

For aerospace vehicles, composite materials are used in large-scale integral panels due to their excellent material properties. In the structure of vehicles, this kind of composite material panel is connected to the internal structure through fasteners. During the composite material molding process...

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Veröffentlicht in:Journal of physics. Conference series 2023-11, Vol.2633 (1), p.12015
Hauptverfasser: Li, Peiyuan, Cai, Qiaoyan, Wang, Fei, Zhang, Tao, Tan, Riming
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Sprache:eng
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Zusammenfassung:For aerospace vehicles, composite materials are used in large-scale integral panels due to their excellent material properties. In the structure of vehicles, this kind of composite material panel is connected to the internal structure through fasteners. During the composite material molding process and the process of drilling connection holes, some local delamination sometimes occurs, this delamination is hardly detected in time, it can cause great damage to the compressive strength of the structure. In this paper, the ABAQUS/Explicit solver is introduced to analyze the progressive damage of interlaminar separation with cohesive elements, the accuracy difference between different damage modes with typical solvers is verified. Then based on the self-compiled three-dimensional Hashin failure criterion subroutine, the numerical simulation is carried out on the compressive strength of the composite laminate under different pre-delamination damage ranges, and the compressive strength of the single-fastener connection structure with pre-delamination, indicates the fiber damage, matrix damage and delamination damage, in order to explore its failure mode and residual strength law.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2633/1/012015