模块化能量吸收系统的多仿生设计策略，基于集成了布利甘式穿孔的互锁缝合线

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2024-10-11 DOI:10.1016/j.tws.2024.112553

Jiaxuan Li , Chao Sui , Yuna Sang , Yichen Zhou , Zifu Zang , Yushun Zhao , Xiaodong He , Chao Wang

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引用次数: 0

摘要

薄壁管作为一种理想的结构单元被广泛应用于缓冲吸能领域。然而，由于存在冗余连接结构，薄壁管系统的性能受到很大限制。针对这些问题，本研究开发了一种高性能模块化系统的多仿生设计策略，创新性地将互锁缝合线的坚固连接结构与 Bouligand 结构的高效变形模式相结合。在设计过程中，分别研究了缝合线启发的系统，并通过有限元模拟和实验研究了其力学行为。结果表明，该模块化系统具有良好的结构可扩展性和可调变形模式，可根据需要进行调整，以适应不同的载荷和几何特征。此外，为了减轻重量并提高系统的变形程度，受布利甘结构高效变形模式的启发，提出了一种优化策略，即在管子侧壁上穿插一连串螺旋排列的导向孔。结果表明，与未穿孔系统相比，双螺旋穿孔系统的重量减轻了 10%，而比能量吸收率提高了 58%。此外，该系统的比能量吸收率和能量吸收效率分别高达 48.25 J/g 和 56.17%，在保持结构稳定性和可调节性能的同时，与传统的蜂窝夹芯板不相上下。因此，这种多元仿生策略可以整合各种天然结构的优势，为高性能防护系统的设计提供新的启示。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A multi-bionic design strategy for modular energy absorption system based on interlocking suture integrated with Bouligand-like arranged perforations

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A multi-bionic design strategy for modular energy absorption system based on interlocking suture integrated with Bouligand-like arranged perforations

Thin-walled tubes are widely used in the field of cushioning energy absorption as an ideal structural unit. However, the performance of the thin-walled tube system is greatly limited by the presence of redundant connection structures. To address these issues, a multi-bionic design strategy for high-performance modular system was developed in this work, which innovatively combines the robust joint structure of the interlocking suture with the efficient deformation mode of the Bouligand structures. In the design process, the suture-inspired system was studied separately, and its mechanical behaviors were investigated by FEM simulations and experiments. The results showed that the modular system has good structural scalability and tunable deformation mode, and can be adjusted on demand to accommodate different loads and geometric features. Furthermore, in order to reduce the weight and improve the deformation degree of the system, an optimization strategy inspired by the efficient deformation mode of the Bouligand structure was proposed by perforating a sequence of helix-arranged guide holes in the sidewalls of the tubes. The results showed that the double-helix perforated system can reduce the weight by 10% while increasing the specific energy absorption by 58% compared with the unperforated system. In addition, the specific energy absorption and energy absorption efficiency of the system are as high as 48.25 J/g and 56.17%, which is comparable to traditional honeycomb sandwich panels while retaining structural stability and adjustable performance. Therefore, this multi-bionic strategy can integrate the advantages of various natural structures and provide new insights for the design of high-performance protective systems.

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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.