Reversible patterning of spherical shells through constrained buckling
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PhysRevMaterials.1.025601.pdf
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850.75 KB
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Author(s)
Marthelot, Joel
Brun, P.-T.
Lopez Jimenez, Francisco
Reis, Pedro Miguel
Date Issued
July 2017
Journal
Physical Review Materials
Publisher
American Physical Society (APS)
Citation
Marthelot, J. et al. “Reversible Patterning of Spherical Shells through Constrained Buckling.” Physical Review Materials 1, 2 (July 2017): 025601 © 2017 American Physical Society
Version
Final published version
Abstract
Recent advances in active soft structures envision the large deformations resulting from mechanical instabilities as routes for functional shape morphing. Numerous such examples exist for filamentary and plate systems. However, examples with double-curved shells are rarer, with progress hampered by challenges in fabrication and the complexities involved in analyzing their underlying geometrical nonlinearities. We show that on-demand patterning of hemispherical shells can be achieved through constrained buckling. Their postbuckling response is stabilized by an inner rigid mandrel. Through a combination of experiments, simulations, and scaling analyses, our investigation focuses on the nucleation and evolution of the buckling patterns into a reticulated network of sharp ridges. The geometry of the system, namely, the shell radius and the gap between the shell and the mandrel, is found to be the primary ingredient to set the surface morphology. This prominence of geometry suggests a robust, scalable, and tunable mechanism for reversible shape morphing of elastic shells.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Massachusetts Institute of Technology. Department of Mathematics
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PHYSREVMATERIALS.1.025601
