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.

中文翻译：

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具有立方各向异性的材料之间的膨胀

摘要-

本文简要介绍了具有立方各向异性的泊松比为负的晶体材料（晶体膨胀）的研究。已经证明所有立方晶体的1/4部分具有拉力性质。在具有立方圆柱各向异性的手性纳米/微管中发现了更多的促生长作用。已经确定，与各向同性材料的已知非线性效应相反，由立方晶体制成的手性纳米/微管在扭转下表现出线性Poynting效应。在两层复合材料的纵向张力的情况下，表明在存在一层膨胀材料的情况下违反了弗格特混合规则。