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Open AccessArticle

Planar Mechanical Metamaterials with Embedded Permanent Magnets

1
Freiburg Institute for Advanced Studies, 79104 Freiburg im Breisgau, Germany
2
Cluster of Excellence livMatS @ FIT—Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, 79110 Freiburg im Breisgau, Germany
Materials 2020, 13(6), 1313; https://doi.org/10.3390/ma13061313
Received: 28 January 2020 / Revised: 5 March 2020 / Accepted: 11 March 2020 / Published: 13 March 2020
(This article belongs to the Special Issue Advances in Mechanical Metamaterials)
The design space of mechanical metamaterials can be drastically enriched by the employment of non-mechanical interactions between unit cells. Here, the mechanical behavior of planar metamaterials consisting of rotating squares is controlled through the periodic embedment of modified elementary cells with attractive and repulsive configurations of the magnets. The proposed design of mechanical metamaterials produced by three-dimensional printing enables the efficient and quick reprogramming of their mechanical properties through the insertion of the magnets into various locations within the metamaterial. Experimental and numerical studies reveal that under equibiaxial compression various mechanical characteristics, such as buckling strain and post-buckling stiffness, can be finely tuned through the rational placement of the magnets. Moreover, this strategy is shown to be efficient in introducing bistability into the metamaterial with an initially single equilibrium state. View Full-Text
Keywords: metamaterials; mechanical metamaterials; permanent magnets; 3D printing; multistability; bistability; magneto-mechanical metamaterials; architected materials metamaterials; mechanical metamaterials; permanent magnets; 3D printing; multistability; bistability; magneto-mechanical metamaterials; architected materials
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MDPI and ACS Style

Slesarenko, V. Planar Mechanical Metamaterials with Embedded Permanent Magnets. Materials 2020, 13, 1313.

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