Communication

Negative Poisson's Ratio Behavior Induced by an Elastic Instability

  1. Katia Bertoldi1,*,
  2. Pedro M. Reis2,
  3. Stephen Willshaw3,
  4. Tom Mullin3

Article first published online: 3 SEP 2009

DOI: 10.1002/adma.200901956

Issue

Advanced Materials

Advanced Materials

Volume 22, Issue 3, pages 361–366, January 19, 2010

Additional Information

How to Cite

Bertoldi, K., Reis, P. M., Willshaw, S. and Mullin, T. (2010), Negative Poisson's Ratio Behavior Induced by an Elastic Instability. Advanced Materials, 22: 361–366. doi: 10.1002/adma.200901956

Author Information

  1. 1

    Multiscale Mechanics, University of Twente PO Box 217, 7500 AE Enschede (The Netherlands)

  2. 2

    Department of Mathematics, #2-335 Massachusetts Institute of Technology 77 Massachusetts Avenue, Cambridge, MA 02139-4307 (USA)

  3. 3

    Department of Physics & Astronomy, University of Manchester Manchester, M13 9PL (UK)

*Multiscale Mechanics, University of Twente PO Box 217, 7500 AE Enschede (The Netherlands).

Publication History

  1. Issue published online: 13 JAN 2010
  2. Article first published online: 3 SEP 2009
  3. Manuscript Received: 10 JUN 2009

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Keywords:

  • arrays;
  • auxetic materials;
  • elastic instability;
  • matrices;
  • poisson's ratio

Graphical Abstract

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Negative Poisson's ratio behavior has been uncovered in cellular solids that comprise a solid matrix with a square array of circular voids. The simplicity of the fabrication implies robust behavior, which is relevant over a range of scales. The behavior results from an elastic instability, which induces a pattern transformation and excellent quantitative agreement is found between calculation and experiment.

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