AI 中文总结
研究利用手性齿轮和方形晶格超材料等被动机械部件,以非互易方式耦合拉伸和剪切来实现驱动奇弹性,产生奇剪切模量,能进行非保守功并实现非厄米趋肤效应,证明无源元件可在机械结构中实现奇弹性。
AI 中文摘要
我们提出了一种利用被动机械部件(即手性齿轮和方形晶格超材料)的机械机制,以证明机械超材料中的驱动奇弹性。该机制以非互易方式耦合拉伸和剪切,产生奇剪切模量。这种奇剪切模量的出现使得在标准准静态应变循环中能够进行非保守功,进而在动力学中实现非厄米趋肤效应。我们的结果表明,无需电子元件、反馈或机器人控制系统,仅使用无源元件就能在机械结构中实现奇弹性。
英文摘要
We present a mechanical mechanism leveraging passive mechanical components, i.e. chiral gears and a square lattice metamaterial, to demonstrate driven odd elasticity in a mechanical metamaterial. The mechanism couples tension and shear in a non-reciprocal way, resulting in an odd shear modulus. The emergence of this odd shear modulus enables non-conservative work in a standard quasistatic strain cycle, and further enables the non-Hermitian skin effect in dynamics. Our results demonstrate that odd elasticity can be achieved in mechanical structures using passive elements without electronic components coupled with feedback or robotic control systems.
Comments6 pages, 4 figures