Inflatable Origami: Multimodal Deformation via Multistability
Inflatable Origami: Multimodal Deformation via Multistability
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DOI：
10.1002/adfm.202201891
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发表时间：
2022-06-03
影响因子：
19
通讯作者：
Bertoldi, Katia
中科院分区：
文献类型：
--
作者：
Melancon, David;Forte, Antonio Elia;Bertoldi, Katia
充气结构已经成为软机器人和可展开系统设计中的重要组成部分，因为它们可以从单个压力入口实现巨大的形状变化。然而，这种简单性常常带来严格的限制：膨胀时的单峰变形。在这里，多稳定性被用于设计模块化的充气结构，可以在不同的变形模式之间切换，作为对单个输入信号的响应。该系统包括双稳态折纸模块，其中压力用于触发在以简单展开为特征的变形状态到以弯曲变形为特征的状态之间的弹跳过渡。通过组装不同的模块，并调整其几何形状，使其在不同的压力阈值下发生断裂，可以创建具有复杂变形能力的结构，这些结构可以通过一个压力源进行预编程和激活。该方法将多稳定性作为一种范式，消除了充气式系统中输入信号与变形模式之间的一对一关系。
Inflatable structures have become essential components in the design of soft robots and deployable systems as they enable dramatic shape change from a single pressure inlet. This simplicity, however, often brings a strict limitation: unimodal deformation upon inflation. Here, multistability is embraced to design modular, inflatable structures that can switch between distinct deformation modes as a response to a single input signal. This system comprises bistable origami modules in which pressure is used to trigger a snap-through transition between a state of deformation characterized by simple deployment to a state characterized by bending deformation. By assembling different modules and tuning their geometry to cause snapping at different pressure thresholds, structures capable of complex deformations that can be pre-programmed and activated using only one pressure source are created. This approach puts forward multistability as a paradigm to eliminate a one-to-one relation between input signal and deformation mode in inflatable systems.