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Article

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Title

Quasi-static and impact behaviour of foam-filled graded auxetic panel

Authors

[ 1 ] Instytut Analizy Konstrukcji, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ 2 ] Instytut Silników Spalinowych i Napędów, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.7] Civil engineering, geodesy and transport

Year of publication

2023

Published in

International Journal of Impact Engineering

Journal year: 2023 | Journal volume: vol. 178

Article type

scientific article

Publication language

english

Keywords
EN
  • cellular materials
  • auxetic panel
  • foam-filled
  • polyurethane foam
  • crash absorber
  • drop test
  • experimental testing
  • computational modelling
Abstract

EN Cellular structures (in general) and auxetic topologies (in particular) have excellent energy-dissipation characteristics and can be used as lightweight impact-energy absorbers. This paper aims to experimentally and computationally examine the behaviour of novel re-entrant auxetic graded aluminium panels filled with polyurethane foam in an auxetic pattern. The performance is compared with 3 non-graded, 1 graded and 2 foam-filled graded panels. The 6 compared auxetic panels share the same basic geometry but vary in the sheet thickness and the addition of polyurethane foam. The auxetic panels were built by corrugating and gluing 12 aluminium sheets. The material properties of the used aluminium sheets and foam were determined with standard mechanical testing. Detailed quasi-static and dynamic drop tests were conducted and compared with a non-linear computational model. The stress-strain relationships, deformation patterns, specific energy absorption, crash force efficiency and Poisson's ratio were comprehensively evaluated. Foam-filled panels revealed higher specific energy absorption and more stable deformation than non-filled panels. The developed computational models successfully describe mechanical and deformation behaviour and can be used for future virtual testing of other configurations.

Pages (from - to)

104606-1 - 104606-11

DOI

10.1016/j.ijimpeng.2023.104606

URL

https://www.sciencedirect.com/science/article/pii/S0734743X23001173?via%3Dihub

Comments

article number: 104606

License type

CC BY-NC-ND (attribution - noncommercial - no derivatives)

Open Access Mode

czasopismo hybrydowe

Open Access Text Version

final published version

Date of Open Access to the publication

in press

Full text of article

Download file

Access level to full text

public

Ministry points / journal

140

Impact Factor

5,1

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