Double-Negative Mechanical Metamaterials Displaying Simultaneous Negative Stiffness and Negative Poisson's Ratio Properties.
biomechanical · Level V
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- Record sourced from PubMed, PMID 27781310.
- Also identified by DOI 10.1002/adma.201603959.
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Abstract
A scalable mechanical metamaterial simultaneously displaying negative stiffness and negative Poisson's ratio responses is presented. Interlocking hexagonal subunit assemblies containing 3 alternative embedded negative stiffness (NS) element types display Poisson's ratio values of -1 and NS values over two orders of magnitude (-1.4 N mm<sup>-1</sup> to -160 N mm<sup>-1</sup> ), in good agreement with model predictions.