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arXiv · 1612.05987

Snapping Mechanical Metamaterials under Tension

Ahmad Rafsanjani·Abdolhamid Akbarzadeh·Damiano Pasini
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Abstract

We present a monolithic mechanical metamaterial comprising a periodic arrangement of snapping units with tunable tensile behavior. Under tension, the metamaterial undergoes a large extension caused by sequential snap-through instabilities, and exhibits a pattern switch from an undeformed wavy-shape to a diamond configuration. By means of experiments performed on 3D printed prototypes, numerical simulations and theoretical modeling, we demonstrate how the snapping architecture can be tuned to generate a range of nonlinear mechanical responses including monotonic, S-shaped, plateau and non-monotonic snap-through behavior. This work contributes to the development of design strategies that allow programming nonlinear mechanical responses in solids.

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Ahmad Rafsanjani, Abdolhamid Akbarzadeh, Damiano Pasini. 2016-12-18. Snapping Mechanical Metamaterials under Tension. https://doi.org/10.1002/adma.201502809

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