Quantized energy absorption of sandwiched origami ring

IF 4.3 3区 工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Extreme Mechanics Letters Pub Date : 2024-06-14 DOI:10.1016/j.eml.2024.102183
Bowen Tan, Ke Liu
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Abstract

Origami cores are increasingly recognized as effective structures for energy absorption in sandwich plates. However, as most origami sandwich cores are made of tessellations of orthotropic unit cells, their free edges may hinder the formation of plastic hinges and reduce energy absorption capacity. To eliminate such free edges, in this work, by trimming the popular Miura-ori unit cells to form ring-shaped loops, we create a new origami sandwich plate with improved energy absorption efficiency. We study the energy absorption characteristics of these origami ring cores through a combination of theory, numerical simulations, and experiments. Both simulations and experiments verify that the origami ring cores possess quantized energy absorption capacity, related to the number of additional plastic hinges derived from strong local buckling of origami creases. We develop a theoretical model that effectively captures the formation of plastic hinges and predicts their absorbed energy. In summary, the origami ring cores present a novel and promising sandwich plate design approach, characterized by quantized energy absorption performance. This innovation holds significant potential for diverse engineering applications across sectors such as the aeronautic and marine industries and infrastructure development.

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夹层折纸环的量化能量吸收
折纸夹芯被越来越多的人认为是夹层板中有效的能量吸收结构。然而,由于大多数折纸夹芯都是由正交各向同性单元格的网格组成,其自由边缘可能会阻碍塑性铰链的形成并降低能量吸收能力。为了消除这种自由边缘,在这项工作中,我们通过修剪流行的 Miura-ori 单元,使其形成环形圈,从而创造出一种具有更高能量吸收效率的新型折纸夹芯板。我们通过理论、数值模拟和实验相结合的方法研究了这些折纸环形核心的能量吸收特性。模拟和实验都验证了折纸环形核心具有量化的能量吸收能力,这与折纸折痕的强局部屈曲所产生的附加塑性铰链数量有关。我们建立的理论模型能有效捕捉塑性铰链的形成并预测其吸收的能量。总之,折纸环形核心是一种新颖而有前途的夹层板设计方法,其特点是具有量化的能量吸收性能。这一创新在航空和海洋工业以及基础设施开发等领域的各种工程应用中具有巨大潜力。
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来源期刊
Extreme Mechanics Letters
Extreme Mechanics Letters Engineering-Mechanics of Materials
CiteScore
9.20
自引率
4.30%
发文量
179
审稿时长
45 days
期刊介绍: Extreme Mechanics Letters (EML) enables rapid communication of research that highlights the role of mechanics in multi-disciplinary areas across materials science, physics, chemistry, biology, medicine and engineering. Emphasis is on the impact, depth and originality of new concepts, methods and observations at the forefront of applied sciences.
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