Twisting a Cylindrical Sheet Makes It a Tunable Locking Material
Twisting a Cylindrical Sheet Makes It a Tunable Locking Material
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扭转圆柱形片材使其成为可调锁定材料
DOI：
10.1103/physrevlett.131.148201
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发表时间：
2023
影响因子：
8.6
通讯作者：
Paulsen, Joseph D.
中科院分区：
文献类型：
--
作者：
Dong, Pan;He, Mengfei;Keim, Nathan C.;Paulsen, Joseph D.
带扣的床单提供了一个材料库，可以在以后展开。对于足够薄但坚硬的材料，这种几何过程具有显着的机械特征：当松弛度耗尽时，材料会锁定以进一步延伸。在这里，我们建立了一个可调谐锁定材料的简单途径：一个具有一定区间的系统，在给定的变形模式下可以自由变形，并且该区间的端点可以在很宽的范围内连续变化。我们在形成圆柱壳并承受轴向扭曲和压缩的薄片中演示了这种类型的机械响应，并通过简单的几何模型合理化了我们的结果。
A buckled sheet offers a reservoir of material that can be unfurled at a later time. For sufficiently thin yet stiff materials, this geometric process has a striking mechanical feature: when the slack runs out, the material locks to further extension. Here, we establish a simple route to a tunable locking material: a system with an interval where it is freely deformable under a given deformation mode, and where the endpoints of this interval can be changed continuously over a wide range. We demonstrate this type of mechanical response in a thin sheet formed into a cylindrical shell and subjected to axial twist and compression, and we rationalize our results with a simple geometric model.