Journal
SOFT MATTER
Volume 14, Issue 48, Pages 9744-9749Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sm02082e
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Funding
- National Aeronautics and Space Administration
- Foster and Coco Stanback Space Innovation Fund
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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.
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