抗冲击梯度螺旋层压板的仿生方法

IF 23.2 2区 材料科学 Q1 MATERIALS SCIENCE, COMPOSITES
Wenting Ouyang, Xiang Gao, Lei Yan, Bowen Gong, Huan Wang, Hua-Xin Peng
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引用次数: 0

摘要

复合材料电池外壳被认为是保护汽车电池单元免受物理冲击的有效解决方案。为增强复合材料层压板的抗冲击性而采用的传统层压设计方案已被证明是不够的,因为它们无法实现防止非对称损坏模式的机制。受在螳螂虾和美洲龙虾等甲壳类动物外骨骼中观察到的 Bouligand 结构梯度排列的启发,这项研究将梯度-斜面(GH)设计策略应用于高性能复合材料层压板的制造。值得注意的是,平面外的机械响应表明,与传统的准各向同性层压板相比,GH 结构具有更高的性能。结构参数区域排列的差异改变了 GH 构型的机械特性和损坏机制。具体来说,模仿螳螂虾双触角的 GH-I 结构在短时冲击载荷下成功地抵御了特定区域的损伤,与受龙虾角质层启发的倒置结构(GH-II)相比,临界冲击损伤阈值力提高了 52%。这进一步证明了螳螂虾所采取的捕食策略,即实施快速的动态打击来粉碎猎物,从而对抗冲击性提出了要求。在长期承受平面外荷载的情况下,GH-II结构的承载能力和能量消耗分别提高了46%和25%,从而发展出龙虾爪的典型破碎机制,充分利用了局部结构的损伤耐受性。这些发现揭示了生物范式的基本力学原理,并表明 GH 设计是一种潜在的可行方法,可在满足汽车电池外壳需求方面实现双赢,无论是减少结构损坏以实现抗冲击要求,还是为沉重的电池组提供承载支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biomimetic approach to gradient-helicoidal laminates for impact-resistant applications

Composite-based battery enclosure is considered to be an effective solution to protect the automotive battery cells from physical impacts. Conventional lay-up design schemes employed for enhancing the impact resistance of composite laminates have been proven inadequate due to their inability to realize the prevention mechanism against asymmetric damage modes. Inspired by the gradient arrangement of Bouligand structure observed in the exoskeletons of crustaceans, such as Mantis Shrimp and American Lobster, this work applies the gradient-helicoidal (GH) design strategies to the fabrication of high-performance composite laminates. Notably, the out-of-plane mechanical responses show that the GH configurations possess enhanced performances compared with the traditional quasi-isotropic laminates. The difference in the regional arrangement of structural parameters alters the mechanical characteristics and damage mechanisms of GH configurations. Specifically, the GH-I configuration mimicking the dactyl of Mantis Shrimp successfully resists the damage initiation in specific regions under the short duration impact loading, which is reflected in a 52% improvement of the threshold force for critical impact damage compared to the inverted counterpart inspired by lobster cuticle (GH-II). It is a further proof of the predation strategy adopted by Mantis Shrimp, which implements a quick dynamic strike to smash the preys, resulting in a requirement for impact resistance. With prolonged exposure to out-of-plane loading, the GH-II configuration exhibits a 46% and 25% increase in load-bearing capacity and energy dissipation, respectively, developing the typical crushing mechanism of lobster claws that fully exploits the damage tolerance of local structures. These findings reveal the underlying mechanics of biological paradigms and convey that the GH design is a potentially feasible approach to achieve win–win progress in matching the demands of automotive battery enclosures, whether it is the requirement to reduce structural damage for impact resistance or to provide load-carrying support for the heavy battery pack.

Graphical abstract

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来源期刊
CiteScore
26.00
自引率
21.40%
发文量
185
期刊介绍: Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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