各向异性
材料科学
超材料
单斜晶系
辅助
周期边界条件
刚度
各向同性
有限元法
泊松比
边值问题
复合材料
机械
泊松分布
数学分析
物理
数学
热力学
光学
量子力学
统计
光电子学
分子
出处
期刊:Journal of Applied Mechanics
[ASME International]
日期:2022-09-09
卷期号:89 (10)
被引量:3
摘要
Abstract The anisotropic elastic mechanical properties of a family of single material chiral mechanical metamaterials are explored systematically. An integrated monoclinic-micropolar constitutive model is developed to quantify the anisotropic mechanical properties of the chiral designs with different geometries. The model predictions are thoroughly verified by mechanical experiments on three-dimensional (3D) printed specimens and finite element simulations with periodic boundary conditions. The new integrated monoclinic-micropolar model can predict the anisotropic elastic properties in all directions. Normalized model parameters for this family of chiral designs are provided. Finally, the anisotropic effective stiffness and effective Poisson’s ratio of all geometric designs in this family are quantified. The anisotropy and the completeness of auxeticity are evaluated systematically.
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