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Numerical studies on the quasi-static axial crushing and energy absorption of foam-filled conical tubes

Ahmad, Zaini & Thambiratnam, David P. (2008) Numerical studies on the quasi-static axial crushing and energy absorption of foam-filled conical tubes. .

Abstract

Foam-filled thin-walled tubes are considered to be desirable energy absorbers under axial loading due to their higher energy absorption and crush force efficiency compared with empty tubes. This paper treats the energy absorption response of foam-filled conical tubes under quasi static axial loading, using finite element techniques. Finite element model of the foam filled conical tube was developed using explicit non-linear finite element code LS-DYNA and validated using experimental and existing numerical results. Influence of important parameters such as wall thickness, semi-apical angle and density of foam filler was investigated and the results highlight the advantages of using foam-filled conical tubes as energy absorber. Results also indicate that the crush and energy absorption performances of conical tubes are significantly enhanced by foam filling. The practical outcomes of this project are the development of (i) design information for the use of foam-filled conical tubes as energy absorbers in impact loading applications and (ii) empirical formulae for crush force efficiency of these devices

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ID Code: 14165
Item Type: Journal Article
Additional Information: For more information, please refer contact the author.
Keywords: conical tube, foam, filled, axial crushing, energy absorption, finite element
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2008 David P. Thambiratnam and Zaini Ahmad
Deposited On: 25 Jul 2008
Last Modified: 15 Jan 2009 18:24

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