Abstract
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.
- Received 8 April 2021
- Revised 1 July 2021
- Accepted 31 August 2021
DOI:https://doi.org/10.1103/PhysRevLett.127.168002
© 2021 American Physical Society
Physics Subject Headings (PhySH)
synopsis
Inducing a Curl with a Stretch
Published 14 October 2021
Patterning grooves into the surface of an elastic ribbon can cause the ribbon to curl into a tube shape when it is stretched.
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