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Phys Rev Lett. 2016 Sep 9;117(11):114301. doi: 10.1103/PhysRevLett.117.114301. Epub 2016 Sep 9.

Recoverable and Programmable Collapse from Folding Pressurized Origami Cellular Solids.

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Department of Mechanical Engineering, Clemson University, Clemson, South Carolina 29634, USA.
Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA.


We report a unique collapse mechanism by exploiting the negative stiffness observed in the folding of an origami solid, which consists of pressurized cells made by stacking origami sheets. Such a collapse mechanism is recoverable, since it only involves rigid folding of the origami sheets and it is programmable by pressure control and the custom design of the crease pattern. The collapse mechanism features many attractive characteristics for applications such as energy absorption. The reported results also suggest a new branch of origami study focused on its nonlinear mechanics associated with folding.

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