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Issue 48, 2018
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Shape-morphing architected sheets with non-periodic cut patterns

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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.

Graphical abstract: Shape-morphing architected sheets with non-periodic cut patterns

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Publication details

The article was received on 11 Oct 2018, accepted on 19 Nov 2018 and first published on 04 Dec 2018

Article type: Communication
DOI: 10.1039/C8SM02082E
Soft Matter, 2018,14, 9744-9749

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    Shape-morphing architected sheets with non-periodic cut patterns

    P. Celli, C. McMahan, B. Ramirez, A. Bauhofer, C. Naify, D. Hofmann, B. Audoly and C. Daraio, Soft Matter, 2018, 14, 9744
    DOI: 10.1039/C8SM02082E

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