Negative stiffness of a layer with topologically interlocked elements

Y. Estrin, A. V. Dyskin, E. Pasternak, S. Schaare, S. Stanchits, A. J. Kanel-Belov

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70 Scopus citations


Unusual mechanical response of a structure with topologically interlocked elements is discussed. Under point loading, it behaves pseudo-plastically, with a negative stiffness in part of the unloading curve. This effect is inherent in the structure and is attributed to changing contact conditions due to rotation of the elements.

Original languageEnglish
Pages (from-to)291-294
Number of pages4
JournalScripta Materialia
Issue number2
StatePublished - Jan 2004
Externally publishedYes

Bibliographical note

Funding Information:
The authors wish to thank Mr. M. Bosse, Dr. T. Lebedkina and Mr. D. Trenke for help with tests involving PVC elements. Useful discussions with Prof. G. Ziegmann and Prof. N. Müller are appreciated. Support from the Australian Research Council through Discovery Grant DP0210574 (2002–2004) and Linkage International Grant LX0347195 (2002–2004) as well as from DFG through Grant ES-74/10-1 is acknowledged. One of the authors (E.P.) acknowledges support through an Alexander von Humboldt Research Fellowship 2002–2003.


  • Mechanical properties
  • Structural behavior
  • Topological interlocking


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