Cargando…
Static Stability of Composite Annular Plates with Auxetic Properties
This paper presents an evaluation of the static stability of complex, composite annular plates with layers having auxetic properties. The main objective of the numerical investigations is the development of a plate model, which uses an approximate solution based on orthogonalization and finite diffe...
Autor principal: | |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9146793/ https://www.ncbi.nlm.nih.gov/pubmed/35629604 http://dx.doi.org/10.3390/ma15103579 |
_version_ | 1784716650035019776 |
---|---|
author | Pawlus, Dorota |
author_facet | Pawlus, Dorota |
author_sort | Pawlus, Dorota |
collection | PubMed |
description | This paper presents an evaluation of the static stability of complex, composite annular plates with layers having auxetic properties. The main objective of the numerical investigations is the development of a plate model, which uses an approximate solution based on orthogonalization and finite difference methods. The three-layered plate is composed of auxetic facings and a soft, foam core. The material properties of the facings are characterized by Poisson’s ratio, the values of which are variously positive and negative. The results obtained for an auxetic plate were compared on the basis of the results for a plate with traditional facings and a plate model built of finite elements. Additionally, in order to verify the calculation results, an analysis of the homogeneous plate was performed. Two plate models built of finite differences and finite elements were compared. The wide image of buckling responses of the examined plates was created on the basis of the calculation results of both compressed and radially stretched plates. An increase in the values of the critical static loads with increasing absolute value of Poisson’s ratio of auxetic facings is one of the observations. |
format | Online Article Text |
id | pubmed-9146793 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-91467932022-05-29 Static Stability of Composite Annular Plates with Auxetic Properties Pawlus, Dorota Materials (Basel) Article This paper presents an evaluation of the static stability of complex, composite annular plates with layers having auxetic properties. The main objective of the numerical investigations is the development of a plate model, which uses an approximate solution based on orthogonalization and finite difference methods. The three-layered plate is composed of auxetic facings and a soft, foam core. The material properties of the facings are characterized by Poisson’s ratio, the values of which are variously positive and negative. The results obtained for an auxetic plate were compared on the basis of the results for a plate with traditional facings and a plate model built of finite elements. Additionally, in order to verify the calculation results, an analysis of the homogeneous plate was performed. Two plate models built of finite differences and finite elements were compared. The wide image of buckling responses of the examined plates was created on the basis of the calculation results of both compressed and radially stretched plates. An increase in the values of the critical static loads with increasing absolute value of Poisson’s ratio of auxetic facings is one of the observations. MDPI 2022-05-17 /pmc/articles/PMC9146793/ /pubmed/35629604 http://dx.doi.org/10.3390/ma15103579 Text en © 2022 by the author. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pawlus, Dorota Static Stability of Composite Annular Plates with Auxetic Properties |
title | Static Stability of Composite Annular Plates with Auxetic Properties |
title_full | Static Stability of Composite Annular Plates with Auxetic Properties |
title_fullStr | Static Stability of Composite Annular Plates with Auxetic Properties |
title_full_unstemmed | Static Stability of Composite Annular Plates with Auxetic Properties |
title_short | Static Stability of Composite Annular Plates with Auxetic Properties |
title_sort | static stability of composite annular plates with auxetic properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9146793/ https://www.ncbi.nlm.nih.gov/pubmed/35629604 http://dx.doi.org/10.3390/ma15103579 |
work_keys_str_mv | AT pawlusdorota staticstabilityofcompositeannularplateswithauxeticproperties |