Detail publikačního výsledku
Deformation of Gels with Spherical Auxetic Inclusions
ŽÍDEK, J.; POLÁČEK, P.; JANČÁŘ, J.
Originální název
Deformation of Gels with Spherical Auxetic Inclusions
Anglický název
Deformation of Gels with Spherical Auxetic Inclusions
Druh
Článek WoS
Originální abstrakt
Auxetic metamaterials possess unnatural properties, such as a negative Poisson's ratio, which offers interesting features when combined with traditional materials. This paper describes the deformation behavior of a gel consisting of spherical auxetic inclusions when embedded in a conventional matrix. The auxetic inclusions and conventional matrix were modeled as spherical objects with a controlled pore shape. The auxetic particle had a reentrant honeycomb, and the conventional phase contained honeycomb-shaped pores. The deformation behavior was simulated using various existing models based on continuum mechanics. For the continuum mechanics models-the simplest of which are the Mori-Tanaka theory and self-consistent field mechanics models-the auxetic particle was homogenized as a solid element with Young's modulus and Poisson's ratio and compared with the common composite gel filled with rigid spheres. The finite element analysis simulations using these models were performed for two cases: (1) a detailed model of one particle and its surroundings in which the structure included the design of both the reentrant and conventional honeycombs; and (2) a multiparticle face-centered cubic lattice where both the classic matrix and auxetic particle were homogenized. Our results suggest that auxetic inclusion-filled gels provide an unsurpassed balance of low density and enhanced stiffness.
Anglický abstrakt
Auxetic metamaterials possess unnatural properties, such as a negative Poisson's ratio, which offers interesting features when combined with traditional materials. This paper describes the deformation behavior of a gel consisting of spherical auxetic inclusions when embedded in a conventional matrix. The auxetic inclusions and conventional matrix were modeled as spherical objects with a controlled pore shape. The auxetic particle had a reentrant honeycomb, and the conventional phase contained honeycomb-shaped pores. The deformation behavior was simulated using various existing models based on continuum mechanics. For the continuum mechanics models-the simplest of which are the Mori-Tanaka theory and self-consistent field mechanics models-the auxetic particle was homogenized as a solid element with Young's modulus and Poisson's ratio and compared with the common composite gel filled with rigid spheres. The finite element analysis simulations using these models were performed for two cases: (1) a detailed model of one particle and its surroundings in which the structure included the design of both the reentrant and conventional honeycombs; and (2) a multiparticle face-centered cubic lattice where both the classic matrix and auxetic particle were homogenized. Our results suggest that auxetic inclusion-filled gels provide an unsurpassed balance of low density and enhanced stiffness.
Klíčová slova
auxetic; deformation; model; simulation; continuum mechanics
Klíčová slova v angličtině
auxetic; deformation; model; simulation; continuum mechanics
Autoři
ŽÍDEK, J.; POLÁČEK, P.; JANČÁŘ, J.
Rok RIV
2023
Vydáno
01.11.2022
Nakladatel
MDPI
Místo
BASEL
ISSN
2310-2861
Periodikum
Gels
Svazek
8
Číslo
11
Stát
Švýcarská konfederace
Strany počet
16
URL
BibTex
@article{BUT182363,
author="Jan {Žídek} and Petr {Poláček} and Josef {Jančář}",
title="Deformation of Gels with Spherical Auxetic Inclusions",
journal="Gels",
year="2022",
volume="8",
number="11",
pages="16",
doi="10.3390/gels8110698",
url="https://www.mdpi.com/2310-2861/8/11/698"
}