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  • Chiral metamaterial predicted by granular micromechanics: verified with 1D example synthesized using additive manufacturing
Title: Chiral metamaterial predicted by granular micromechanics: verified with 1D example synthesized using additive manufacturing
Granular micromechanics approach (GMA) provides a predictive theory for granular material behavior by connecting the grain-scale interactions to continuum models. Here we have used GMA to predict the closed-form expressions for elastic constants of macro-scale chiral granular metamaterial. It is shown that for macro-scale chirality, the grain-pair interactions must include coupling between normal and tangential deformations. We have designed such a grain-pair connection for physical realization and quantified with FE model. The verification of the prediction is then performed using a physical model of 1D bead string obtained by 3D printing. The behavior is also verified using a discrete model of 1D bead string.  more » « less
Award ID(s):
1727433
NSF-PAR ID:
10169575
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Continuum Mechanics and Thermodynamics
ISSN:
0935-1175
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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