Ballistic behavior of bionic UHMWPE laminates with double-helicoidal lay-ups

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-10-04 DOI:10.1016/j.tws.2025.114059

Pengcheng Hu , Xiaobin Li , Wei Chen , Xinxin Ge , Zixiao Hu , Yuelin Zhang , Yuansheng Cheng , Pan Zhang

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Abstract

Inspired by the double-helical structure of coelacanth scales, the bio-inspired double-helicoidal UHMWPE laminates with helicoidal fiber architectures were designed and fabricated. A combined experimental and numerical simulation approach was employed to investigate the ballistic response of these biomimetic laminates under high-impact velocities. The damage patterns and failure mechanisms of laminates with different pitch angles were systematically identified and analyzed. The increased pitch angle was found to constrain the indirect tensile mechanisms and bulging deformation of the laminate, leading to severe ply splitting on the rear surface. The effects of interfacial strength in the bio-inspired laminates and projectile nose shape on ballistic performance were comprehensively elucidated. The results revealed that the cross-ply configuration exhibited superior ballistic performance against flat-nosed projectiles. However, under conditions of reduced interlayer strength or hemispherical-nosed projectile impacts, laminates with smaller pitch angles demonstrated significantly enhanced ballistic resistance.

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双螺旋层合仿生超高分子量聚乙烯层合板的弹道性能

以腔棘鱼鳞片的双螺旋结构为灵感，设计制作了具有螺旋纤维结构的仿生双螺旋超高分子量聚乙烯层压板。采用实验与数值模拟相结合的方法研究了这些仿生层合板在高冲击速度下的弹道响应。系统地识别和分析了不同俯仰角层合板的损伤形态和破坏机理。增大的俯仰角限制了层合板的间接拉伸机制和胀形变形，导致层合板后表面出现严重的层裂。全面阐述了仿生层合材料界面强度和弹鼻形状对弹道性能的影响。结果表明，交叉层构型对平鼻弹具有优异的弹道性能。然而，在层间强度降低或半球形弹丸冲击的条件下，较小俯仰角的层合板表现出显著增强的弹道阻力。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.