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arXiv 1407.4273cond-mat.soft
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可编程机械超材料

Programmable Mechanical Metamaterials

Bastiaan Florijn, Corentin Coulais, Martin van Hecke

摘要:

我们创建的机械超材料,其单轴压缩的响应可以编程的横向限制,允许单调,非单调和滞后行为。这些功能产生于破坏的旋转对称性,其导致沿着这些超材料的两个主轴的变形的高度非线性耦合。我们介绍了一个软机制模型,捕捉可编程力学,并概述了一般的设计策略,限制机械超材料。最后,我们展示了如何非均匀约束可以探索创造多稳定性和巨大的滞后。

英文摘要:

We create mechanical metamaterials whose response to uniaxial compression can be programmed by lateral confinement, allowing monotonic, non-monotonic and hysteretic behavior. These functionalities arise from a broken rotational symmetry which causes highly nonlinear coupling of deformations along the two primary axes of these metamaterials. We introduce a soft mechanism model which captures the programmable mechanics, and outline a general design strategy for confined mechanical metamaterials. Finally, we show how inhomogeneous confinement can be explored to create multi stability and giant hysteresis.

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