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A Novel Mechanical Metamaterial Exhibiting Auxetic Behavior and Negative Compressibility
Auxetics (negative Poisson’s ratio) and materials with negative linear compressibility (NLC) exhibit the anomalous mechanical properties of getting wider rather than thinner when stretched and expanding in at least one direction under hydrostatic pressure, respectively. A novel mechanism—termed the...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6982174/ https://www.ncbi.nlm.nih.gov/pubmed/31877886 http://dx.doi.org/10.3390/ma13010079 |
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author | Grima-Cornish, James N. Grima, Joseph N. Attard, Daphne |
author_facet | Grima-Cornish, James N. Grima, Joseph N. Attard, Daphne |
author_sort | Grima-Cornish, James N. |
collection | PubMed |
description | Auxetics (negative Poisson’s ratio) and materials with negative linear compressibility (NLC) exhibit the anomalous mechanical properties of getting wider rather than thinner when stretched and expanding in at least one direction under hydrostatic pressure, respectively. A novel mechanism—termed the ‘triangular elongation mechanism’—leading to such anomalous behavior is presented and discussed through an analytical model. Amongst other things, it is shown that this novel mechanism, when combined with the well-known ‘rotating squares’ model, can generate giant negative Poisson’s ratios when the system is stretched. |
format | Online Article Text |
id | pubmed-6982174 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-69821742020-02-07 A Novel Mechanical Metamaterial Exhibiting Auxetic Behavior and Negative Compressibility Grima-Cornish, James N. Grima, Joseph N. Attard, Daphne Materials (Basel) Article Auxetics (negative Poisson’s ratio) and materials with negative linear compressibility (NLC) exhibit the anomalous mechanical properties of getting wider rather than thinner when stretched and expanding in at least one direction under hydrostatic pressure, respectively. A novel mechanism—termed the ‘triangular elongation mechanism’—leading to such anomalous behavior is presented and discussed through an analytical model. Amongst other things, it is shown that this novel mechanism, when combined with the well-known ‘rotating squares’ model, can generate giant negative Poisson’s ratios when the system is stretched. MDPI 2019-12-22 /pmc/articles/PMC6982174/ /pubmed/31877886 http://dx.doi.org/10.3390/ma13010079 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Grima-Cornish, James N. Grima, Joseph N. Attard, Daphne A Novel Mechanical Metamaterial Exhibiting Auxetic Behavior and Negative Compressibility |
title | A Novel Mechanical Metamaterial Exhibiting Auxetic Behavior and Negative Compressibility |
title_full | A Novel Mechanical Metamaterial Exhibiting Auxetic Behavior and Negative Compressibility |
title_fullStr | A Novel Mechanical Metamaterial Exhibiting Auxetic Behavior and Negative Compressibility |
title_full_unstemmed | A Novel Mechanical Metamaterial Exhibiting Auxetic Behavior and Negative Compressibility |
title_short | A Novel Mechanical Metamaterial Exhibiting Auxetic Behavior and Negative Compressibility |
title_sort | novel mechanical metamaterial exhibiting auxetic behavior and negative compressibility |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6982174/ https://www.ncbi.nlm.nih.gov/pubmed/31877886 http://dx.doi.org/10.3390/ma13010079 |
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