Optimization algorithms-assisted unified path generation and decomposition for 3D needled preforms with excellent interlaminar properties

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-09-16 DOI:10.1016/j.compstruct.2025.119662

Yibo Gao , Feng Liu , Kuanmin Mao , Wudi Du , Haoran Li , Kexu Zhang

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引用次数: 0

Abstract

With the gradual development of stiff-flexible coupled and deformable composite materials, the needle-punching process, due to its flexible forming advantages, shows broad application prospects in the local reinforcement of preforms. However, the inter-layer performance of 3D needle-punched preforms remains weak, and the influence of needle-punching process parameters on inter-layer performance is yet to be quantified. Therefore, this study explores the effect of needle-punching paths on the inter-layer performance of preforms and proposes a unified path generation and decomposition (UPD-PPO-MOGA) method, which combines proximal policy optimization (PPO) and multi-objective genetic algorithm (MOGA), to generate uniform, discrete, and low-redundancy needle-punching paths to improve the inter-layer performance of needle-punched preforms. Experimental comparisons demonstrate that prioritizing inter-layer overlap, followed by uniformity, and finally in-plane overlap, is crucial for achieving superior inter-layer performance. The resulting preforms showed a 55 % and 70.15 % increase in peeling energy and a 32.36 % and 41.22 %.

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具有优异层间性能的三维针状预制体的优化算法辅助统一路径生成与分解

随着刚柔耦合和可变形复合材料的逐步发展，针刺工艺由于其灵活成形的优点，在预制件局部加固方面显示出广阔的应用前景。然而，三维针刺预制件的层间性能仍然较弱，针刺工艺参数对层间性能的影响还有待量化。为此，本研究探讨了针冲路径对预成形层间性能的影响，提出了一种统一路径生成与分解（UPD-PPO-MOGA）方法，该方法将近端策略优化（PPO）和多目标遗传算法（MOGA）相结合，生成均匀、离散、低冗余的针冲路径，以提高针冲预成形层间性能。实验对比表明，优先考虑层间重叠，其次是均匀性，最后是面内重叠，是获得优异层间性能的关键。结果表明，该预制体的脱皮能分别提高了55%和70.15%，脱皮能分别提高了32.36%和41.22%。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.