Origami‐Based Cellular Structures with In‐Situ Transition between Collapsible and Load‐Bearing Configurations,Advanced Engineering Materials

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Origami‐Based Cellular Structures with In‐Situ Transition between Collapsible and Load‐Bearing Configurations
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2019-09-25 , DOI: 10.1002/adem.201900562
Hiromi Yasuda _{1,

2} , Balakumaran Gopalarethinam ₁ , Takahiro Kunimine ₃ , Tomohiro Tachi ₄ , Jinkyu Yang ₁

Affiliation

Periodic cellular structures are widely used in engineering applications due to their lightweight, space-filling, and load-supporting nature. However, the configuration of cellular structures is generally fixed after they are initially built, and it is extremely difficult to change their structural properties—particularly their load-bearing capabilities—in a controllable fashion. Herein, it is shown that volumetric origami cells made of Tachi–Miura polyhedron (TMP) can exhibit in situ transition between flat-foldable and load-bearing states without modifying their predefined crease patterns or hitting the kinematically singular configuration. Theoretical analysis is conducted to study this mechanical bifurcation to establish the design principle, which is verified experimentally by fabricating self-folding TMP prototypes made of paper sheets and heat-shrinking films. The improvement of load-carrying capabilities by 10 is demonstrated by switching the TMP from foldable to load-bearing configurations. These programmable structures can provide practical solutions in various engineering applications, such as deployable space structures, portable architectures for disaster relief, reconfigurable packing materials, and medical devices such as stents.

中文翻译：

基于折纸的蜂窝结构在可折叠和承重配置之间具有原位转换

周期性蜂窝结构因其重量轻、空间填充和负载支撑特性而广泛用于工程应用。然而，蜂窝结构的构型在最初建造后通常是固定的，并且很难以可控的方式改变其结构特性，尤其是其承载能力。在这里，表明由 Tachi-Miura 多面体（TMP）制成的体积折纸单元可以在平面可折叠和承重状态之间表现出原位过渡，而无需修改其预定义的折痕图案或达到运动学奇异配置。进行理论分析来研究这种机械分叉，以确定设计原则，通过制造由纸片和热收缩膜制成的自折叠 TMP 原型进行实验验证。通过将 TMP 从可折叠配置转换为承重配置，证明了承载能力提高了 10。这些可编程结构可以在各种工程应用中提供实用的解决方案，例如可展开的空间结构、用于救灾的便携式架构、可重构包装材料以及医疗设备（例如支架）。

更新日期：2019-09-25

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