A unit cell structure with tunable Poisson's ratio from positive to negative
A unit cell structure with tunable Poisson's ratio from positive to negative
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泊松比从正到负可调的晶胞结构
DOI：
10.1016/j.matlet.2015.11.037
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发表时间：
2016-02-01
影响因子：
3
通讯作者：
Lakes, Roderic S.
中科院分区：
文献类型：
--
作者：
Li, Dong;Dong, Liang;Lakes, Roderic S.
设计了一种具有可入式中空骨架的新型单胞结构，采用有限元法研究了其泊松比作为几何变量和母材泊松比的函数。仿真结果表明：通过改变几何变量和母材泊松比，可以在泊松比（-1至+0.5）的整个范围内调节单体胞结构的泊松比。采用三种不同的材料，通过3D打印制备了具有相同几何变量的三种样品，测量了它们的泊松比，并与有限元模拟结果进行了比较，实验结果与有限元模拟结果吻合较好。(C) 2015 Elsevier B.V.版权所有
A novel unit cell structure with re-entrant hollow skeleton was designed and its Poisson's ratio was studied using the finite element method (FEM) as a function of the geometric variables and the parent material Poisson's ratio. The simulation results showed. that the Poisson's ratio of the unit cell structure is tunable over the full range of Poisson's ratio (-1 to +0.5) by varying the geometric variables and parent material Poisson's ratio. Three types of samples with identical geometric variables were fabricated via 3D printing using three different materials, and their Poisson's ratios were measured and compared with the ones from FE simulation, and excellent agreement was found between the experimental results and FE simulation. (C) 2015 Elsevier B.V. All rights reserved.