Numerical and experimental research on progressive damage of composite stiffened panels during post-buckling analysis

Baocai Pang; Zhao Zhang; Fei Yuan

doi:10.1117/12.3046936

27 September 2024 Numerical and experimental research on progressive damage of composite stiffened panels during post-buckling analysis

Baocai Pang, Zhao Zhang, Fei Yuan

Author Affiliations +

Proceedings Volume 13261, Tenth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024); 132613G (2024) https://doi.org/10.1117/12.3046936
Event: 10th International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024), 2024, Wuhan, China

Abstract

Composite materials are extensively employed in aerospace and other engineering applications, and it is of tremendous practical importance to study the mechanical behaviours, such as damage accumulation and failure law of their material structures. In order to predict the load capacity and damage degradation of composite hat-stiffened panels under compressive load, numerical and experimental methods are employed to study four kinds of degradation models (sudden degradation model based on elastic constants, progressive degradation model based on elastic constants, constant degradation model based on CDM, linear degradation model based on CDM). Numerical simulations are conducted by using ABAQUS software. The estimated buckling and ultimate capacity agreed well with the data in experimental. The comparison shows that all four damage degradation models can predict the load-carrying capacity and damage range. Compared with the other models, the constant degradation model based on CDM has the highest accuracy. The results provide theoretical guidance for studying the mechanical properties of composite hat-stiffened panel under compressive load.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Baocai Pang, Zhao Zhang, and Fei Yuan "Numerical and experimental research on progressive damage of composite stiffened panels during post-buckling analysis", Proc. SPIE 13261, Tenth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024), 132613G (27 September 2024); https://doi.org/10.1117/12.3046936

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KEYWORDS

Composites

Skin

Elasticity

Code division multiplexing

Matrices

Analytical research

3D modeling

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