Studying the Properties of Metamaterials with a Negative Poisson's Ratio when Punched by a Rigid Impactor

被引：6
|
作者：
Ivanova, S. Yu. [1 ]
Osipenko, K. Yu. [1 ]
Demin, A. I. [1 ]
Banichuk, N. V. [1 ]
Lisovenko, D. S. [1 ]
机构：
[1] Ishlinsky Inst Problems Mech RAS, Moscow 119526, Russia
来源：
MECHANICS OF SOLIDS | 2023年 / 58卷 / 05期
关键词：
metamaterials; auxetics; experimental studies; punching; rigid impactor; finite element calculation; HIGH-SPEED PENETRATION; SHAPE OPTIMIZATION;
D O I：
10.3103/S0025654423600897
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Some properties of metamaterials with a negative Poisson's ratio (auxetics) have been studied experimentally when punched along the normal by a rigid spherical impactor. Samples of a metamaterial with a chiral structure (hexachirals honeycomb) are made of e-PLA plastic using a 3D printer. In experiments, a deviation of the direction of movement of the impactor after leaving the punched sample from the approach direction (normal to the side surface) is observed. The dependence of the impactor projection direction on the orientation of the elements of chiral symmetry of the samples is established. A FE model for calculating the penetration of a chiral structure has been developed. Numerical results are presented and their agreement with experimental data is noted.
引用
收藏
页码：1536 / 1544
页数：9
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