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首页> 外文期刊>Materials Science and Engineering >Effects of fine-scale features on the elastic properties of zero Poisson's ratio honeycombs
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Effects of fine-scale features on the elastic properties of zero Poisson's ratio honeycombs

机译：细尺度特征对零泊松比蜂窝体弹性特性的影响

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Cellular structures with zero Poisson's ratio (ZPR) have potential application in tissue engineering. Although the Poisson's ratio of a certain network is mainly determined by the internal cell wall arrangement, it is also influenced by the fine-scale geometry parameters. In this paper, the effects of cell wall relative thickness and the corner radius on the elastic properties of two types of ZPR cellular structures, including reversed semi-re-entrant (RSRE) and semi-re-entrant (SRE) honeycombs, were investigated by means of finite element method (FEM). The result shows that the cell wall relative thickness and the corner radius have a significant effect on the Poisson's ratios of RSRE and SRE honeycombs. This phenomenon is attributed to the deformation effect of the vertexes and it can be eliminated by altering the effective length of the inclined strut. This effect is also validated as documented later by our experiments.
机译：泊松比（ZPR）为零的细胞结构在组织工程中具有潜在的应用。尽管某个网络的泊松比主要由内部单元壁的排列确定，但它也受精细几何参数的影响。本文研究了孔壁相对厚度和拐角半径对两种类型的ZPR蜂窝结构的弹性特性的影响，包括反向半凹形（RSRE）和半凹形（SRE）蜂窝。通过有限元方法（FEM）。结果表明，孔壁的相对厚度和拐角半径对RSRE和SRE蜂窝的泊松比有显着影响。此现象归因于顶点的变形效应，可以通过更改倾斜支柱的有效长度来消除。如我们稍后的实验所证明的，这种效果也得到了验证。

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