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Computer modeling and analysis of foam-filled conical tube under axial loading

Ahmad, Zaini, Thambiratnam, David P., & Tan, Andy C. C. (2007) Computer modeling and analysis of foam-filled conical tube under axial loading. In Third International Conference on Structural Engineering, Mechanics and Computation, 10-12 September 2007, Cape Town, South Africa.

Abstract

Foam-filled thin-walled tubes have been considered to be desirable energy absorbers under axial loading due to their relatively high energy absorption and crush force efficiency compared with an empty tube. In particular, the combination of a tapered tube and foam filler is preferable to a straight tube for energy absorption purposes as a tapered tube can withstand impact load in a stable manner. This paper investigates and compares the energy absorption response of empty and foam-filled conical tubes under quasi static axial loading, in terms of variation in their wall thickness, semi-apical angle and foam density. A parametric study has been performed using a finite element model validated using existing theoretical and numerical models. The numerical model was developed using explicit finite element code LS-DYNA. Overall, the results show that energy absorption capacity is significantly enhanced and a more stable crush response can be obtained by filling the conical tube with metallic foam filler. In addition, the advantages of using a foam-filled conical tube as an energy absorber are highlighted. As a practical outcome of this study, an empirical formula and design information will be developed for the use of foam-filled conical tubes as energy absorbers.

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ID Code: 14159
Item Type: Conference Paper
Additional Information: For more information, please refer to the conference's website (see hypertext link) or contact the author.
Additional URLs:
ISBN: 9789059660540
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2007 (please consult author)
Deposited On: 25 Jul 2008
Last Modified: 29 Feb 2012 23:32

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