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Buckling-induced encapsulation of structured elastic shells under pressure

Open access
Shim, Jongmin, Perdigou, Claude, Chen, Elizabeth R., Bertoldi, Katia, Reis, Pedro M.·2012·Proceedings of the National Academy of Sciences

Abstract

We introduce a class of continuum shell structures, the Buckliball, which undergoes a structural transformation induced by buckling under pressure loading. The geometry of the Buckliball comprises a spherical shell patterned with a regular array of circular voids. In order for the pattern transformation to be induced by buckling, the possible number and arrangement of these voids are found to be restricted to five specific configurations. Below a critical internal pressure, the narrow ligaments between the voids buckle, leading to a cooperative buckling cascade of the skeleton of the ball. This ligament buckling leads to closure of the voids and a reduction of the total volume of the shell by up to 54%, while remaining spherical, thereby opening the possibility of encapsulation. We use a combination of precision desktop-scale experiments, finite element simulations, and scaling analyses to explore the underlying mechanics of these foldable structures, finding excellent qualitative and quantitative agreement. Given that this folding mechanism is induced by a mechanical instability, our Buckliball opens the possibility for reversible encapsulation, over a wide range of length scales.

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Metadata

Authors
Shim, J., Perdigou, C., Chen, E. R., Bertoldi, K., & Reis, P. M.
Venue
Proceedings of the National Academy of Sciences
Published
2012-03-26
Volume
109
Issue
16
Pages
5978-5983
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2027456736
Cited by
263
References
1
FWCI
24.01
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Buckling-induced encapsulation of structured elastic shells under pressure. https://app.cochat.ai/papers/10.1073/pnas.1115674109
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Shim, J., Perdigou, C., Chen, E. R., Bertoldi, K., & Reis, P. M. (2012). Buckling-induced encapsulation of structured elastic shells under pressure. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1115674109

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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