Ring Origami: Snap‐Folding of Rings with Different Geometries
Ring Origami: Snap‐Folding of Rings with Different Geometries
复制标题
戒指折纸：快速折叠不同几何形状的戒指
DOI：
10.1002/aisy.202100107
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发表时间：
2021
影响因子：
7.4
通讯作者：
Zhao, Ruike
中科院分区：
文献类型：
--
作者：
Wu, Shuai;Yue, Liang;Jin, Yi;Sun, Xiaohao;Zemelka, Cole;Qi, H. Jerry;Zhao, Ruike
折纸折叠和薄结构屈曲被广泛地研究用于各种生物医学、机器人和航空航天应用中具有大填充比的结构变换。圆环的折叠在简单的扭转运动下表现出双稳态的跳跃变形，并表现出较大的面积变化，达到其未变形构型的11%。受大面积变化和通过快速折叠自动引导变形的激励，它旨在设计具有前所未有的填充比率的环形折纸组件。本文通过有限元分析，研究了功能可折叠结构环形折纸组件中不同几何形状(圆形、椭圆形、圆形矩形和圆形三角形)的单环的卡合行为。研究了几何参数对可折叠性、稳定性和填充率的影响，并进行了实验验证。以不同的圆环为基本构件，通过实验验证了环形折纸组件的折叠性能，分别为初始面积的7%和2.5%，初始体积的0.3%。据设想，报道的折纸环折断折叠将提供另一种策略来设计具有可靠的自导变形和大面积变化的可折叠/可展开结构和装置。
Origami folding and thin structure buckling are intensively studied for structural transformations with large packing ratio for various biomedical, robotic, and aerospace applications. The folding of circular rings has shown bistable snap‐through deformation under simple twisting motion and demonstrates a large area change to 11% of its undeformed configuration. Motivated by the large area change and the self‐guided deformation through snap‐folding, it is intended to design ring origami assemblies with unprecedented packing ratios. Herein, through finite‐element analysis, snap‐folding behaviors of single ring with different geometries (circular, elliptical, rounded rectangular, and rounded triangular shapes) are studied for ring origami assemblies for functional foldable structures. Geometric parameters' effects on the foldability, stability, and the packing ratio are investigated and are validated experimentally. With different rings as basic building blocks, the folding of ring origami assemblies including linear‐patterned rounded rectangular rings, radial‐patterned elliptical rings, and 3D crossing circular rings is further experimentally demonstrated, which show significant packing ratios of 7% and 2.5% of the initial areas, and 0.3% of the initial volume, respectively. It is envisioned that the reported snap‐folding of origami rings will provide alternative strategies to design foldable/deployable structures and devices with reliable self‐guided deformation and large area change.