Mechanical property tuning and prediction methods of Waterbomb cellular metamaterials

IF 4.3 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2025-03-25 DOI:10.1016/j.istruc.2025.108658

Yongtao Bai , Zhaoyu Wang , Yao Chen

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引用次数: 0

Abstract

Origami cellular metamaterials have enormous potential for applications in engineering fields such as energy absorption. However, the current studies lack relevant methods for tuning and predicting mechanical properties. In this paper, we propose a novel mechanical property tuning method by connecting other materials between adjacent origami units. Based on the ori-kirigami cell of a Waterbomb cellular metamaterial, we investigate the effects of the design parameters of the connecting materials on the initial peak force, specific energy absorption (SEA), and negative stiffness properties through quasi-static compression tests and numerical simulations. Moreover, we propose structural scaling laws to predict the mechanical properties of this ori-kirigami cell based on dimensional analysis. The results show that the connecting materials can influence the SEA and the initial peak force. This tuning method can also influence the negative stiffness characteristics of the ori-kirigami cell. On the other hand, the initial peak force and energy absorption predicted by the scaling laws agree well with the simulation results, verifying the correctness of the similarity laws. This work makes origami cellular metamaterials with stronger mechanical adaptability, making them suitable for various engineering fields such as energy absorption and protection.

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水弹细胞超材料力学性能调整及预测方法

折纸细胞超材料在能量吸收等工程领域具有巨大的应用潜力。然而，目前的研究缺乏相关的方法来调整和预测力学性能。在本文中，我们提出了一种新的机械性能调整方法，通过连接相邻折纸单元之间的其他材料。基于水弹细胞超材料的orii -kirigami细胞，通过准静态压缩试验和数值模拟，研究了连接材料设计参数对初始峰值力、比能吸收（SEA）和负刚度性能的影响。此外，我们提出了基于量纲分析的结构标度规律来预测这种orii -kirigami细胞的力学性能。结果表明，连接材料会对SEA和初始峰值力产生影响。这种调谐方法也会影响到orii -kirigami单元的负刚度特性。另一方面，标度律预测的初始峰值力和能量吸收与仿真结果吻合较好，验证了相似律的正确性。这项工作使折纸细胞超材料具有更强的机械适应性，适用于能量吸收、防护等各种工程领域。

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来源期刊

Structures Engineering-Architecture

CiteScore

5.70

自引率

17.10%

发文量

1187

期刊介绍： Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.