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Licensed Unlicensed Requires Authentication Published by De Gruyter June 12, 2007

Dynamic behaviour of cork and cork-filled aluminium tubes: Numerical simulation and innovative applications

  • Celina Pires Gameiro , José Cirne , Victor Miranda , Joaquim Pinho-da-Cruz and Filipe Teixeira-Dias
From the journal Holzforschung

Abstract

Cork is a unique and complex natural cellular material with many industrial applications. The purpose of this paper is to explore a new application field for the use of micro-agglomerate cork as an energy-absorbing medium. A numerical study on the energy absorption capabilities of square and circular cork-filled aluminium tubes with a width or diameter of 80 mm, length of 300 mm and variable thickness was performed with the finite element method code LS-DYNA™. The tubes were impacted uniaxially at 10 and 15 m s-1. The same analysis was carried out on aluminium foam-filled tubes. The results demonstrate that cork filling leads to a considerable increase in the energy absorbed for both section geometries, and that tube thickness plays an important role in the deformation modes and energy absorption. The investigation revealed better results for aluminium foam-filled structures, but demonstrated that micro-agglomerate cork has high potential as an energy-absorbing medium in crash protection applications.


Corresponding author. CEMUC, Departamento de Engenharia Mecânica, Faculdade de Ciências e Tecnologia da Universidade de Coimbra, 3030-788 Coimbra, Portugal Phone: +351-23-9790762

Received: 2006-7-14
Accepted: 2007-2-7
Published Online: 2007-06-12
Published in Print: 2007-6-1

©2007 by Walter de Gruyter Berlin New York

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