Tuning the Performance of Metallic Auxetic Metamaterials by Using Buckling and Plasticity
Metallic auxetic metamaterials are of great potential to be used in many applications because of their superior mechanical performance to elastomer-based auxetic materials. Due to the limited knowledge on this new type of materials under large plastic deformation, the implementation of such material...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456524/ https://www.ncbi.nlm.nih.gov/pubmed/28787854 http://dx.doi.org/10.3390/ma9010054 |
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author | Ghaedizadeh, Arash Shen, Jianhu Ren, Xin Xie, Yi Min |
author_facet | Ghaedizadeh, Arash Shen, Jianhu Ren, Xin Xie, Yi Min |
author_sort | Ghaedizadeh, Arash |
collection | PubMed |
description | Metallic auxetic metamaterials are of great potential to be used in many applications because of their superior mechanical performance to elastomer-based auxetic materials. Due to the limited knowledge on this new type of materials under large plastic deformation, the implementation of such materials in practical applications remains elusive. In contrast to the elastomer-based metamaterials, metallic ones possess new features as a result of the nonlinear deformation of their metallic microstructures under large deformation. The loss of auxetic behavior in metallic metamaterials led us to carry out a numerical and experimental study to investigate the mechanism of the observed phenomenon. A general approach was proposed to tune the performance of auxetic metallic metamaterials undergoing large plastic deformation using buckling behavior and the plasticity of base material. Both experiments and finite element simulations were used to verify the effectiveness of the developed approach. By employing this approach, a 2D auxetic metamaterial was derived from a regular square lattice. Then, by altering the initial geometry of microstructure with the desired buckling pattern, the metallic metamaterials exhibit auxetic behavior with tuneable mechanical properties. A systematic parametric study using the validated finite element models was conducted to reveal the novel features of metallic auxetic metamaterials undergoing large plastic deformation. The results of this study provide a useful guideline for the design of 2D metallic auxetic metamaterials for various applications. |
format | Online Article Text |
id | pubmed-5456524 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54565242017-07-28 Tuning the Performance of Metallic Auxetic Metamaterials by Using Buckling and Plasticity Ghaedizadeh, Arash Shen, Jianhu Ren, Xin Xie, Yi Min Materials (Basel) Article Metallic auxetic metamaterials are of great potential to be used in many applications because of their superior mechanical performance to elastomer-based auxetic materials. Due to the limited knowledge on this new type of materials under large plastic deformation, the implementation of such materials in practical applications remains elusive. In contrast to the elastomer-based metamaterials, metallic ones possess new features as a result of the nonlinear deformation of their metallic microstructures under large deformation. The loss of auxetic behavior in metallic metamaterials led us to carry out a numerical and experimental study to investigate the mechanism of the observed phenomenon. A general approach was proposed to tune the performance of auxetic metallic metamaterials undergoing large plastic deformation using buckling behavior and the plasticity of base material. Both experiments and finite element simulations were used to verify the effectiveness of the developed approach. By employing this approach, a 2D auxetic metamaterial was derived from a regular square lattice. Then, by altering the initial geometry of microstructure with the desired buckling pattern, the metallic metamaterials exhibit auxetic behavior with tuneable mechanical properties. A systematic parametric study using the validated finite element models was conducted to reveal the novel features of metallic auxetic metamaterials undergoing large plastic deformation. The results of this study provide a useful guideline for the design of 2D metallic auxetic metamaterials for various applications. MDPI 2016-01-18 /pmc/articles/PMC5456524/ /pubmed/28787854 http://dx.doi.org/10.3390/ma9010054 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ghaedizadeh, Arash Shen, Jianhu Ren, Xin Xie, Yi Min Tuning the Performance of Metallic Auxetic Metamaterials by Using Buckling and Plasticity |
title | Tuning the Performance of Metallic Auxetic Metamaterials by Using Buckling and Plasticity |
title_full | Tuning the Performance of Metallic Auxetic Metamaterials by Using Buckling and Plasticity |
title_fullStr | Tuning the Performance of Metallic Auxetic Metamaterials by Using Buckling and Plasticity |
title_full_unstemmed | Tuning the Performance of Metallic Auxetic Metamaterials by Using Buckling and Plasticity |
title_short | Tuning the Performance of Metallic Auxetic Metamaterials by Using Buckling and Plasticity |
title_sort | tuning the performance of metallic auxetic metamaterials by using buckling and plasticity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456524/ https://www.ncbi.nlm.nih.gov/pubmed/28787854 http://dx.doi.org/10.3390/ma9010054 |
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