Auxetics among Materials with Cubic Anisotropy
В. А. Городцов, Д. С. Лисовенко
Abstract
The article provides a brief overview of studies on crystalline materials with negative Poisson’s ratio (crystalline auxetics) with cubic anisotropy. It has been demonstrated that 1/4 part of all cubic crystals has auxetic properties. Even more auxetics are found among chiral nano/microtubes with cubic cylindrical anisotropy. It has been established that chiral nano/microtubes made of cubic crystals exhibit linear Poynting’s effect under torsion, in contrast to the known nonlinear effect for isotropic materials. In the case of longitudinal tension of two-layered composites, it is shown that Voigt’s rule of mixtures is violated in the presence of a layer of auxetic materials.
Topics & Concepts
AuxeticsAnisotropyIsotropyMaterials scienceTorsion (gastropod)Condensed matter physicsCubic crystal systemPoisson's ratioComposite materialMathematicsPhysicsPoisson distributionOpticsMedicineStatisticsSurgeryCellular and Composite StructuresAdvanced Theoretical and Applied Studies in Material Sciences and GeometryBone Tissue Engineering Materials