Poisson's Ratio and Modulus of Gyroid Lattices
Poisson's Ratio and Modulus of Gyroid Lattices
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DOI：
10.1002/pssb.202100081
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发表时间：
2021-07-27
影响因子：
1.6
通讯作者：
Lakes, Roderic
中科院分区：
文献类型：
--
作者：
DeValk, Tyler;Lakes, Roderic
不同密度的陀螺表面晶格表现出与拉伸主导的极值行为接近Hashin-Shtrikman上限的杨氏模量一致。螺旋晶格表现出的泊松比为0.34 +/- 0.06独立的方向，独立的试样直径，和独立的手征。这种行为与先前的手性晶格形成对比，该手性晶格在泊松比中表现出明显的尺寸效应，这对于手性弹性固体是允许的。
Gyroid surface lattices of different densities exhibit Young's modulus consistent with stretch-dominated extremal behavior approaching the Hashin-Shtrikman upper bound. The gyroid lattices exhibit a Poisson's ratio of 0.34 +/- 0.06 independent of direction, independent of specimen diameter, and independent of chirality. This behavior is in contrast with prior chiral lattices that exhibited pronounced size effects in Poisson's ratio, allowable for chiral elastic solids.