Predicting origami-inspired programmable self-folding of hydrogel trilayers
Predicting origami-inspired programmable self-folding of hydrogel trilayers
复制标题
预测水凝胶三层折纸启发的可编程自折叠
DOI：
10.1088/0964-1726/25/11/11lt02
复制
发表时间：
2016
影响因子：
4.1
通讯作者：
Zhou Jinxiong
中科院分区：
文献类型：
--
作者：
An Ning;Li Meie;Zhou Jinxiong
在活性或可编程材料中模仿折纸原理为折纸启发的自折叠结构的开发打开了大门，不仅用于美学目的，而且用于功能目的。各种可编程材料使能的自折叠结构已经在各种领域和规模上得到了证明。这些折叠结构具有有限的厚度，并且活性材料的机械性能决定了折叠过程。然而，由于零厚度理论和当前模型中排除的机械特性，将折纸规则用于计算机建模的形式化一直具有挑战性。在这里，我们描述了一个基于物理的有限元模拟方案来预测温度敏感的水凝胶三层的可编程自折叠。图案折痕和分配山区或山谷褶皱突出显示复杂的折纸，如折叠的Randlett的扑翼鸟和起重机。我们的工作提高了理解和促进折纸启发的自折叠结构的设计，拓宽了可重构结构的实现和应用。
Imitating origami principles in active or programmable materials opens the door for development of origami-inspired self-folding structures for not only aesthetic but also functional purposes. A variety of programmable materials enabled self-folding structures have been demonstrated across various fields and scales. These folding structures have finite thickness and the mechanical properties of the active materials dictate the folding process. Yet formalizing the use of origami rules for use in computer modeling has been challenging, owing to the zero-thickness theory and the exclusion of mechanical properties in current models. Here, we describe a physics-based finite element simulation scheme to predict programmable self-folding of temperature-sensitive hydrogel trilayers. Patterning crease and assigning mountain or valley folds are highlighted for complex origami such as folding of the Randlett’s flapping bird and the crane. Our efforts enhance the understanding and facilitate the design of origami-inspired self-folding structures, broadening the realization and application of reconfigurable structures.