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Prediction of auxetic phenomena in nanoporomaterials
Author(s) -
Shilko S. V.,
Petrokovets E. M.,
Pleskachevsky Yu. M.
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200880272
Subject(s) - auxetics , materials science , porosity , isotropy , compression (physics) , porous medium , deformation (meteorology) , composite material , stiffness , optics , physics
Porous materials are efficient structures in respect to optimizing strength and stiffness for a given weight. A new means of improving the characteristics of the samples may be realized using abnormal deformation properties of auxetic porous materials having a negative Poisson's ratio ν . Auxetic porous materials are suitable for creating adaptive contact joints and for replacing damaged biotissue. It is known that the inverted or re‐entrant cell structure of porous auxetics may be obtained by isotropic permanent volumetric compression of conventional foam, resulting in microbuckling of the cell walls. There is interest in compression‐driven self‐assembly as a means to create auxetic porous structures on a nanoscale. To predict the deformation behaviour of porous materials under various types of loading, corresponding mathematical models should be developed. The possibility of compression‐driven self‐assembly of the auxetic nanostructures has been predicted. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)