Shape-morphing architected sheets with non-periodic cut patterns

We investigate the out-of-plane shape morphing capability of single-material elastic sheets with architected cut patterns that result in arrays of tiles connected by flexible hinges. We demonstrate that a non-periodic cut pattern can cause a sheet to buckle into three-dimensional shapes, such as dom...

Full description

Saved in:
Bibliographic Details
Published in:Soft matter 2018-12, Vol.14 (48), p.9744-9749
Main Authors: Celli, Paolo, McMahan, Connor, Ramirez, Brian, Bauhofer, Anton, Naify, Christina, Hofmann, Douglas, Audoly, Basile, Daraio, Chiara
Format: Article
Language:English
Subjects:
Bedding
Curvature
Elastic sheets
Engineering Sciences
Fabrication
Mathematical Physics
Mechanics
Morphing
Periodicity
Physics
Solid mechanics
Structural mechanics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We investigate the out-of-plane shape morphing capability of single-material elastic sheets with architected cut patterns that result in arrays of tiles connected by flexible hinges. We demonstrate that a non-periodic cut pattern can cause a sheet to buckle into three-dimensional shapes, such as domes or patterns of wrinkles, when pulled at specific boundary points. These global buckling modes are observed in experiments and rationalized by an in-plane kinematic analysis that highlights the role of the geometric frustration arising from non-periodicity. The study focuses on elastic sheets, and is later extended to elastic-plastic materials to achieve shape retention. Our work illustrates a scalable route towards the fabrication of three-dimensional objects with nonzero Gaussian curvature from initially-flat sheets.
ISSN:1744-683X
1744-6848
DOI:10.1039/c8sm02082e