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Open AccessArticle

Smart Metamaterial Based on the Simplex Tensegrity Pattern

Faculty of Civil Engineering, Warsaw University of Technology, 00-661 Warsaw, Poland
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Materials 2018, 11(5), 673; https://doi.org/10.3390/ma11050673
Received: 20 February 2018 / Revised: 8 April 2018 / Accepted: 23 April 2018 / Published: 26 April 2018
(This article belongs to the Special Issue Recent Advances in Smart Materials for the Built Environment)
In the present paper, a novel cellular metamaterial that was based on a tensegrity pattern is presented. The material is constructed from supercells, each of which consists of eight 4-strut simplex modules. The proposed metamaterial exhibits some unusual properties, which are typical for smart structures. It is possible to control its mechanical characteristics by adjusting the level of self-stress or by changing the properties of structural members. A continuum model is used to identify the qualitative properties of the considered metamaterial, and to estimate how the applied self-stress and the characteristics of cables and struts affect the whole structure. The performed analyses proved that the proposed structure can be regarded as a smart metamaterial with orthotropic properties. One of its most important features are unique values of Poisson’s ratio, which can be either positive or negative, depending on the applied control parameters. Moreover, all of the mechanical characteristics of the proposed metamaterial are prone to structural control. View Full-Text
Keywords: metamaterial; smart material; smart structure; tensegrity metamaterial; smart material; smart structure; tensegrity
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MDPI and ACS Style

Al Sabouni-Zawadzka, A.; Gilewski, W. Smart Metamaterial Based on the Simplex Tensegrity Pattern. Materials 2018, 11, 673.

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