Programmable Elastic Metamaterials

被引：50

作者：

Haghpanah, Babak ^{[1
,2
]}

Ebrahimi, Hamid ^{[1
]}

Mousanezhad, Davood ^{[1
]}

Hopkins, Jonathan ^{[2
]}

Vaziri, Ashkan ^{[1
]}

机构：

[1] Northeastern Univ, Dept Mech & Ind Engn, Boston, MA 02115 USA

[2] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA

来源：

ADVANCED ENGINEERING MATERIALS | 2016年 / 18卷 / 04期

基金：

美国国家科学基金会;

关键词：

MAGNETIC-FIELD; STIFFNESS; BEHAVIOR;

D O I：

10.1002/adem.201500295

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We introduce a novel concept for the design of programmable-elasticity metamaterials; materials whose elastic properties can be modified instantaneously and reversibly on demand. Real-time tunable linear and nonlinear elastic moduli are obtained in lattice materials by adjustment of strut connectivity via actuation of embedded electromagnetic locks. The Young's modulus and Poisson's ratio of prototype 2D materials are varied instantaneously by more than 2 orders of magnitude and between 0.15 and 0.9, respectively. The buckling strength of the structure is altered by an order of magnitude between two bifurcation states associated with a centrosymmetric and an anti-chiral buckling pattern.

引用

页码：643 / 649

页数：7

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