A reliable framework for assessing the impact resistance and post-impact damage tolerance of 3D hybrid composites against high-energy fragments and hailstones

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

Composite Structures Pub Date : 2025-08-22 DOI:10.1016/j.compstruct.2025.119589

Ke Wang, Farid Taheri

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引用次数: 0

Abstract

The feasibility of using a recently developed 3D Hybrid Composite for aircraft applications is numerically investigated using the Smoothed Particle Hydrodynamics (SPH) method. The study focuses on assessing the impact resistance and damage tolerance of the composite under conditions specified by aerospace certification standards, including impacts from high-energy fragments and hailstones. The primary objective is to develop a robust, cost-effective, and reliable computational framework for predicting the ballistic limits and minimum Compression After Impact (CAI) load capacity of 3DHC materials during the design phase—thus reducing reliance on costly and time-consuming experiments.

To this end, two practical tools are introduced: (1) a design chart for estimating ballistic limits of the novel 3DHC under various projectile types, and (2) an empirical method for quickly predicting the minimum CAI load capacity based on projectile and panel dimensions. These methods are validated against in-house experimental data. Results demonstrate that the combined approach offers engineers a fast and reasonably accurate means to evaluate the performance of 3DHC panels under critical impact scenarios relevant to aerospace structural design. Notably, simulations reveal that successive impacts from large hailstones can induce buckling-related degradation in CAI load-bearing capacity.

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一个可靠的框架，用于评估3D混合复合材料对高能碎片和冰雹的抗冲击性和后冲击损伤容限

采用光滑粒子流体力学（SPH）方法对最近开发的用于飞机应用的3D混合复合材料的可行性进行了数值研究。该研究的重点是在航空航天认证标准规定的条件下评估复合材料的抗冲击性和损伤容限，包括来自高能碎片和冰雹的冲击。主要目标是开发一个强大、经济、可靠的计算框架，用于在设计阶段预测3DHC材料的弹道极限和最小冲击后压缩（CAI）载荷能力，从而减少对昂贵和耗时的实验的依赖。为此，介绍了两种实用工具：(1)估算新型3DHC在各种弹丸类型下的弹道极限的设计图表；(2)基于弹丸和弹板尺寸快速预测CAI最小载荷能力的经验方法。这些方法通过内部实验数据进行了验证。结果表明，该组合方法为工程师提供了一种快速、合理准确的方法来评估与航空结构设计相关的关键冲击场景下3DHC板的性能。值得注意的是，模拟表明，大冰雹的连续撞击会导致CAI承载能力的屈曲相关退化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.