Soft and Stiff Simplex Tensegrity Lattices as Extreme Smart Metamaterials

Anna Al Sabouni-Zawadzka , Wojciech Jerzy Gilewski

Abstract

The present paper is dedicated to an evaluation of novel cellular metamaterials based on a tensegrity pattern. The materials are constructed from supercells, each of which consists of a number of simplex modules with different geometrical proportions. Mechanical properties of the metamaterial can be controlled by adjusting the level of self-equilibrated forces or by changing the properties of structural members. A continuum model based on the equivalence of strain energy of the 3D theory of elasticity with a discrete formulation is used to identify the qualitative properties of the considered metamaterials. The model allows the inclusion of nonlinearities related to the equations of equilibrium in actual configuration of the structure with self-equilibrated set of normal forces typical for tensegrities. The lattices are recognised as extreme metamaterials according to the eigensolution of the equivalent elasticity matrices of the continuum model. The six representative deformation modes are defined and discussed: stiff, soft and medium extensional modes and high (double) as well as low shear modes. The lattices are identified as unimode or nearly bimode according to the classification of extreme materials
Author Anna Al Sabouni-Zawadzka (FCE / ICE)
Anna Al Sabouni-Zawadzka,,
- The Institute of Civil Engineering
, Wojciech Jerzy Gilewski (FCE / ICE)
Wojciech Jerzy Gilewski,,
- The Institute of Civil Engineering
Journal seriesMaterials, ISSN 1996-1944, (A 35 pkt)
Issue year2019
Vol12
No1
Pages1-15
Publication size in sheets0.7
Keywords in Englishmetamaterial; tensegrity lattice; extreme material
ASJC Classification2500 General Materials Science
DOIDOI:10.3390/ma12010187
Languageen angielski
File
materials-12-00187.pdf 5.25 MB
Score (nominal)35
ScoreMinisterial score = 35.0, 21-06-2019, ArticleFromJournal
Publication indicators WoS Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.285; WoS Impact Factor: 2017 = 2.467 (2) - 2017=3.325 (5)
Citation count*2 (2019-08-15)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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