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Finite Element Analysis of Aluminum Honeycombs Subjected to Dynamic Indentation and Compression Loads
The mechanical behavior of aluminum hexagonal honeycombs subjected to out-of-plane dynamic indentation and compression loads has been investigated numerically using ANSYS/LS-DYNA in this paper. The finite element (FE) models have been verified by previous experimental results in terms of deformation...
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/PMC5456648/ https://www.ncbi.nlm.nih.gov/pubmed/28773288 http://dx.doi.org/10.3390/ma9030162 |
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author | Ashab, A.S.M. Ayman Ruan, Dong Lu, Guoxing Bhuiyan, Arafat A. |
author_facet | Ashab, A.S.M. Ayman Ruan, Dong Lu, Guoxing Bhuiyan, Arafat A. |
author_sort | Ashab, A.S.M. Ayman |
collection | PubMed |
description | The mechanical behavior of aluminum hexagonal honeycombs subjected to out-of-plane dynamic indentation and compression loads has been investigated numerically using ANSYS/LS-DYNA in this paper. The finite element (FE) models have been verified by previous experimental results in terms of deformation pattern, stress-strain curve, and energy dissipation. The verified FE models have then been used in comprehensive numerical analysis of different aluminum honeycombs. Plateau stress, σ(pl), and dissipated energy (E(I) for indentation and E(C) for compression) have been calculated at different strain rates ranging from 10(2) to 10(4) s(−1). The effects of strain rate and t/l ratio on the plateau stress, dissipated energy, and tearing energy have been discussed. An empirical formula is proposed to describe the relationship between the tearing energy per unit fracture area, relative density, and strain rate for honeycombs. Moreover, it has been found that a generic formula can be used to describe the relationship between tearing energy per unit fracture area and relative density for both aluminum honeycombs and foams. |
format | Online Article Text |
id | pubmed-5456648 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54566482017-07-28 Finite Element Analysis of Aluminum Honeycombs Subjected to Dynamic Indentation and Compression Loads Ashab, A.S.M. Ayman Ruan, Dong Lu, Guoxing Bhuiyan, Arafat A. Materials (Basel) Article The mechanical behavior of aluminum hexagonal honeycombs subjected to out-of-plane dynamic indentation and compression loads has been investigated numerically using ANSYS/LS-DYNA in this paper. The finite element (FE) models have been verified by previous experimental results in terms of deformation pattern, stress-strain curve, and energy dissipation. The verified FE models have then been used in comprehensive numerical analysis of different aluminum honeycombs. Plateau stress, σ(pl), and dissipated energy (E(I) for indentation and E(C) for compression) have been calculated at different strain rates ranging from 10(2) to 10(4) s(−1). The effects of strain rate and t/l ratio on the plateau stress, dissipated energy, and tearing energy have been discussed. An empirical formula is proposed to describe the relationship between the tearing energy per unit fracture area, relative density, and strain rate for honeycombs. Moreover, it has been found that a generic formula can be used to describe the relationship between tearing energy per unit fracture area and relative density for both aluminum honeycombs and foams. MDPI 2016-03-04 /pmc/articles/PMC5456648/ /pubmed/28773288 http://dx.doi.org/10.3390/ma9030162 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 Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ashab, A.S.M. Ayman Ruan, Dong Lu, Guoxing Bhuiyan, Arafat A. Finite Element Analysis of Aluminum Honeycombs Subjected to Dynamic Indentation and Compression Loads |
title | Finite Element Analysis of Aluminum Honeycombs Subjected to Dynamic Indentation and Compression Loads |
title_full | Finite Element Analysis of Aluminum Honeycombs Subjected to Dynamic Indentation and Compression Loads |
title_fullStr | Finite Element Analysis of Aluminum Honeycombs Subjected to Dynamic Indentation and Compression Loads |
title_full_unstemmed | Finite Element Analysis of Aluminum Honeycombs Subjected to Dynamic Indentation and Compression Loads |
title_short | Finite Element Analysis of Aluminum Honeycombs Subjected to Dynamic Indentation and Compression Loads |
title_sort | finite element analysis of aluminum honeycombs subjected to dynamic indentation and compression loads |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456648/ https://www.ncbi.nlm.nih.gov/pubmed/28773288 http://dx.doi.org/10.3390/ma9030162 |
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