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Auxetic properties of polycrystals
Author(s) -
Jasiukiewicz Cz.,
Paszkiewicz T.,
Wolski S.
Publication year - 2010
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.200945443
Subject(s) - auxetics , materials science , moduli , crystallite , monocrystalline silicon , shear (geology) , poisson distribution , quadratic equation , poisson's ratio , shear modulus , composite material , condensed matter physics , geometry , mathematics , metallurgy , physics , silicon , statistics , quantum mechanics
Young's and shear moduli and Poisson's ratio of polycrystalline solids consisting of two‐dimensional quadratic and three‐dimensional cubic randomly oriented grains of the same size and shape is studied. Considered polycrystals are initially unstrained. It is shown that for such polycrystals the division of the mechanical stability regions into areas of various auxeticity properties is different than for monocrystalline solids. In particular the regions of complete auxeticity enlarge.