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arXiv · 1206.4739

Nonlinear geometric effects in mechanical bistable morphing structures

Zi Chen·Qiaohang Guo·Carmel Majidi·Wenzhe Chen·David J. Srolovitz·Mikko P. Haataja
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Abstract

Bistable structures associated with non-linear deformation behavior, exemplified by the Venus flytrap and slap bracelet, can switch between different functional shapes upon actuation. Despite numerous efforts in modeling such large deformation behavior of shells, the roles of mechanical and nonlinear geometric effects on bistability remain elusive. We demonstrate, through both theoretical analysis and table-top experiments, that two dimensionless parameters control bistability. Our work classifies the conditions for bistability, and extends the large deformation theory of plates and shells.

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Zi Chen, Qiaohang Guo, Carmel Majidi, Wenzhe Chen, David J. Srolovitz, Mikko P. Haataja. 2012-09-08. Nonlinear geometric effects in mechanical bistable morphing structures. https://doi.org/10.1103/physrevlett.109.114302

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