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Bending and Buckling of Circular Sandwich Plates with a Hardened Core
Hard-core sandwich plates are widely used in the field of aviation, aerospace, transportation, and construction thanks to their superior mechanical properties such as sound absorption, heat insulation, shock absorption, and so on. As an important form, the circular sandwich is very common in the fie...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8401216/ https://www.ncbi.nlm.nih.gov/pubmed/34443263 http://dx.doi.org/10.3390/ma14164741 |
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author | Pi, Zizi Zhou, Zilong Deng, Zongbai Wang, Shaofeng |
author_facet | Pi, Zizi Zhou, Zilong Deng, Zongbai Wang, Shaofeng |
author_sort | Pi, Zizi |
collection | PubMed |
description | Hard-core sandwich plates are widely used in the field of aviation, aerospace, transportation, and construction thanks to their superior mechanical properties such as sound absorption, heat insulation, shock absorption, and so on. As an important form, the circular sandwich is very common in the field of engineering. Thus, theoretical analysis and numerical simulation of bending and buckling for isotropic circular sandwich plates with a hard core (SP-HC) are conducted in this study. Firstly, the revised Reissner’s theory was used to derive the bending equations of isotropic circular SP-HC for the first time. Then, the analytic solutions to bending deformation for circular and annular sandwich SP-HCs under some loads and boundary conditions were obtained through the decoupled simplification. Secondly, an analytic solution to bending deformation for a simply supported annular SP-HC under uniformly distributed bending moment and shear force along the inner edge was given. Finally, the differential equations of buckling for circular SP-HCs in polar coordinates were derived to obtain the critical loads of overall instability of SP-HC under simply supported and fixed-end supported boundary conditions. Meanwhile, the numerical simulations using Nastran software were conducted to compare with the theoretical analyses using Reissner’s theory and the derived models in this study. The theoretical and numerical results showed that the present formula proposed in this study can be suitable to both SP-HC and SP-SC. The efforts can provide valuable information for safe and stable application of multi-functional composite material of SP-HC. |
format | Online Article Text |
id | pubmed-8401216 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84012162021-08-29 Bending and Buckling of Circular Sandwich Plates with a Hardened Core Pi, Zizi Zhou, Zilong Deng, Zongbai Wang, Shaofeng Materials (Basel) Article Hard-core sandwich plates are widely used in the field of aviation, aerospace, transportation, and construction thanks to their superior mechanical properties such as sound absorption, heat insulation, shock absorption, and so on. As an important form, the circular sandwich is very common in the field of engineering. Thus, theoretical analysis and numerical simulation of bending and buckling for isotropic circular sandwich plates with a hard core (SP-HC) are conducted in this study. Firstly, the revised Reissner’s theory was used to derive the bending equations of isotropic circular SP-HC for the first time. Then, the analytic solutions to bending deformation for circular and annular sandwich SP-HCs under some loads and boundary conditions were obtained through the decoupled simplification. Secondly, an analytic solution to bending deformation for a simply supported annular SP-HC under uniformly distributed bending moment and shear force along the inner edge was given. Finally, the differential equations of buckling for circular SP-HCs in polar coordinates were derived to obtain the critical loads of overall instability of SP-HC under simply supported and fixed-end supported boundary conditions. Meanwhile, the numerical simulations using Nastran software were conducted to compare with the theoretical analyses using Reissner’s theory and the derived models in this study. The theoretical and numerical results showed that the present formula proposed in this study can be suitable to both SP-HC and SP-SC. The efforts can provide valuable information for safe and stable application of multi-functional composite material of SP-HC. MDPI 2021-08-22 /pmc/articles/PMC8401216/ /pubmed/34443263 http://dx.doi.org/10.3390/ma14164741 Text en © 2021 by the authors. 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 Pi, Zizi Zhou, Zilong Deng, Zongbai Wang, Shaofeng Bending and Buckling of Circular Sandwich Plates with a Hardened Core |
title | Bending and Buckling of Circular Sandwich Plates with a Hardened Core |
title_full | Bending and Buckling of Circular Sandwich Plates with a Hardened Core |
title_fullStr | Bending and Buckling of Circular Sandwich Plates with a Hardened Core |
title_full_unstemmed | Bending and Buckling of Circular Sandwich Plates with a Hardened Core |
title_short | Bending and Buckling of Circular Sandwich Plates with a Hardened Core |
title_sort | bending and buckling of circular sandwich plates with a hardened core |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8401216/ https://www.ncbi.nlm.nih.gov/pubmed/34443263 http://dx.doi.org/10.3390/ma14164741 |
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