Design of Pseudo-Mechanisms and Multistable Units for Mechanical Metamaterials,Physical Review Letters

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Design of Pseudo-Mechanisms and Multistable Units for Mechanical Metamaterials
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-06-17 , DOI: 10.1103/physrevlett.126.248002
Nitin Singh ₁ , Martin van Hecke _{1,

2}

Affiliation

Mechanisms—collections of rigid elements coupled by perfect hinges which exhibit a zero-energy motion—motivate the design of a variety of mechanical metamaterials. We enlarge this design space by considering pseudo-mechanisms, collections of elastically coupled elements that exhibit motions with very low energy costs. We show that their geometric design generally is distinct from those of true mechanisms, thus opening up a large and virtually unexplored design space. We further extend this space by designing building blocks with bistable and tristable energy landscapes, realize these by 3D printing, and show how these form unit cells for multistable metamaterials.

中文翻译：

机械超材料的伪机制和多稳态单元的设计

机构——由完美铰链耦合的刚性元件集合，呈现零能量运动——推动了各种机械超材料的设计。我们通过考虑伪机制来扩大这个设计空间，即以非常低的能量成本表现出运动的弹性耦合元件的集合。我们展示了它们的几何设计通常与真正的机械装置不同，从而开辟了一个大而几乎未开发的设计空间。我们通过设计具有双稳态和三稳态能量景观的积木来进一步扩展这个空间，通过 3D 打印实现这些，并展示这些如何形成多稳态超材料的单元格。

更新日期：2021-06-17

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