Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process

Stiff and strong yet lightweight cellular structures have become widely designed and used as cores for the construction of sandwich panels to reach high stiffness and strength to weight ratios. A low-density pyramidal cellular core has been proposed for investigation in this work. The novel core is...

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Autores principales: Iftimiciuc, Mihaela, Lache, Simona, Wennhage, Per, Velea, Marian Nicolae
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7579035/
https://www.ncbi.nlm.nih.gov/pubmed/32987893
http://dx.doi.org/10.3390/ma13194264
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author Iftimiciuc, Mihaela
Lache, Simona
Wennhage, Per
Velea, Marian Nicolae
author_facet Iftimiciuc, Mihaela
Lache, Simona
Wennhage, Per
Velea, Marian Nicolae
author_sort Iftimiciuc, Mihaela
collection PubMed
description Stiff and strong yet lightweight cellular structures have become widely designed and used as cores for the construction of sandwich panels to reach high stiffness and strength to weight ratios. A low-density pyramidal cellular core has been proposed for investigation in this work. The novel core is manufactured from stainless steel sheet type 304 through a mechanical expansion procedure which is described in detail. The out-of-plane stiffness and strength performance is estimated by an analytical model which is successfully validated through experimental tests. A comparative study with other existing cellular core configurations made from other materials indicates an average performance behavior for the investigated structure. However, potential for a further structural performance increase is observed and discussed
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spelling pubmed-75790352020-10-29 Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process Iftimiciuc, Mihaela Lache, Simona Wennhage, Per Velea, Marian Nicolae Materials (Basel) Article Stiff and strong yet lightweight cellular structures have become widely designed and used as cores for the construction of sandwich panels to reach high stiffness and strength to weight ratios. A low-density pyramidal cellular core has been proposed for investigation in this work. The novel core is manufactured from stainless steel sheet type 304 through a mechanical expansion procedure which is described in detail. The out-of-plane stiffness and strength performance is estimated by an analytical model which is successfully validated through experimental tests. A comparative study with other existing cellular core configurations made from other materials indicates an average performance behavior for the investigated structure. However, potential for a further structural performance increase is observed and discussed MDPI 2020-09-24 /pmc/articles/PMC7579035/ /pubmed/32987893 http://dx.doi.org/10.3390/ma13194264 Text en © 2020 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
Iftimiciuc, Mihaela
Lache, Simona
Wennhage, Per
Velea, Marian Nicolae
Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process
title Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process
title_full Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process
title_fullStr Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process
title_full_unstemmed Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process
title_short Structural Performance Analysis of a Novel Pyramidal Cellular Core Obtained through a Mechanical Expansion Process
title_sort structural performance analysis of a novel pyramidal cellular core obtained through a mechanical expansion process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7579035/
https://www.ncbi.nlm.nih.gov/pubmed/32987893
http://dx.doi.org/10.3390/ma13194264
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