A 2D microstructure with auxetic out-of-plane behavior and non-auxetic in-plane behavior

  title={A 2D microstructure with auxetic out-of-plane behavior and non-auxetic in-plane behavior},
  author={C. Davini and A. Favata and A. Micheletti and R. Paroni},
  journal={Smart Materials and Structures},
Customarily, in-plane auxeticity and synclastic bending behavior (i.e. out-of-plane auxeticity) are not independent, being the latter a manifestation of the former. Basically, this is a feature of three-dimensional bodies. At variance, two-dimensional bodies have more freedom to deform than three-dimensional ones. Here, we exploit this peculiarity and propose a two-dimensional honeycomb microstructure with out-of-plane auxetic behavior opposite to the in-plane one. With a suitable choice of the… Expand
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Auxetic two-dimensional lattices with Poisson's ratio arbitrarily close to −1
  • L. Cabras, M. Brun
  • Physics, Mathematics
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2014
In this paper, we propose a class of lattice structures with macroscopic Poisson's ratio arbitrarily close to the stability limit −1. We tested experimentally the effective Poisson's ratio of theExpand
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