Poisson's Ratio of Convex and Re-Entrant Cubic Lattices Based on Tetrakaidecahedron Cells

被引：0
|
作者：
Wang, Yikai [1 ,2 ]
Stone, Donald S. [1 ,2 ]
Lakes, Roderic S. [1 ,2 ]
机构：
[1] Univ Wisconsin, Dept Mat Sci, Madison, WI 53706 USA
[2] Univ Wisconsin, Dept Mech Engn, Madison, WI 53706 USA
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2024年 / 261卷 / 12期
基金：
美国国家科学基金会;
关键词：
auxetics; lattices; Poisson's ratio; tetrakaidecahedron;
D O I：
10.1002/pssb.202300410
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Cubic lattices based on tetrakaidecahedron cells with re-entrant ribs are designed and fabricated via additive manufacturing. Poisson's ratio decreased to a negative value as the re-entrant angle was made smaller. Poisson's ratio decreased as ribs were made more slender. Lattices with convex tetrakaidecahedron (truncated octahedron) cells had a Poisson's ratio near 0.5 in agreement with theory. Rib slenderness had minimal effect on Poisson's ratio in contrast to the re-entrant lattices.
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页数：6
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