Programmable mechanical metamaterials based on hierarchical rotating structures

被引：36

作者：

Li, Xiang ^{[1
]}

Fan, Rong ^{[2
,3
]}

Fan, Zhengjie ^{[2
,5
]}

Lu, Yang ^{[1
,2
,4
]}

机构：

[1] City Univ Hong Kong, Shenzhen Res Inst, Nanomfg Lab NML, Shenzhen 518057, Peoples R China

[2] City Univ Hong Kong, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

[3] Dalian Univ Technol, Sch Automot Engn, Dalian 116024, Peoples R China

[4] CityU Xidian Joint Lab Micronanomfg, Shenzhen 518057, Peoples R China

[5] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2021年 / 216卷

关键词：

Mechanical metamaterials; Hierarchical structure; Programmable pathway; Auxetics; 3D printing; Flexible;

D O I：

10.1016/j.ijsolstr.2021.01.028

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A novel two-dimensional (2D) mechanical metamaterial with highly programmable mechanical response under compressive load is presented in this paper by introducing hierarchical rotating structures, in which flexible structures are used to replace the rigid part in conventional rotating rigid structures. Multi-step deformation pathways and negative Poisson's ratio were observed in in situ compression experiments and finite element simulations, suggesting that the mechanical behavior of the hierarchical metastructure is highly ordered and can be programmed by constraining angles of the proposed metamaterial. This work offers new insights to create mechanical metamaterial using hierarchical rotating structures for flexible devices and crashworthiness applications. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页码：145 / 155

页数：11

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