Auxetic properties of polycrystals

Details Auxetic properties of polycrystals Auxetic properties of polycrystals

2009-09-23

arxiv.org/abs/0909.4174v1

Physics

Condensed Matter

Materials Science

6 pages, 7 figures, sent to physica status solidi b

Scientific paper

Young's and shear moduli and Poisson's ratio of polycrystalline solids consisting of 2D quadratic and 3D 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.

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