Stretch-Induced Bending of Soft Ribbed Strips,Physical Review Letters

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Stretch-Induced Bending of Soft Ribbed Strips
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-10-14 , DOI: 10.1103/physrevlett.127.168002
Emmanuel Siéfert ₁ , Nicolas Cattaud ₂ , Etienne Reyssat ₂ , Benoît Roman ₂ , José Bico ₂

Affiliation

We show that ribbed elastic strips under tension present large spontaneous curvature and may close into tubes. In this single material architectured system, transverse bending results from a bilayer effect induced by Poisson contraction as the textured ribbon is stretched. Surprisingly, the induced curvature may reverse if ribs of different orientations are considered. Slender ribbed structures may also undergo a nontrivial buckling transition. We use analytical calculations to describe the evolution of the morphology of the ribbon and the transitions between the different experimental regimes as a function of material properties, geometrical parameters, and stretching strain. This scale-independent phenomenon may help the manufacturing of tubular textured structures or easily controllable grippers at small scale.

中文翻译：

软肋条带的拉伸弯曲

我们表明，在张力下的带肋弹性条呈现出较大的自发曲率，并且可能会闭合成管。在这种单一材料结构的系统中，横向弯曲是由于纹理带被拉伸时泊松收缩引起的双层效应引起的。令人惊讶的是，如果考虑不同方向的肋条，诱导曲率可能会反转。细长的肋状结构也可能经历一个非平凡的屈曲过渡。我们使用解析计算来描述带形貌的演变以及不同实验方案之间的转变，作为材料特性、几何参数和拉伸应变的函数。这种与尺度无关的现象可能有助于小规模制造管状纹理结构或易于控制的夹具。

更新日期：2021-10-14

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