Lateral collapse of short-length sandwich tubes compressed by different indenters and exposed to external constraints

A. Baroutaji, A. G. Olabi

Research output: Contribution to journalArticle

Abstract

In this paper, sandwich tube components which consist of thin-walled circular tubes with aluminium foam core are proposed as energy absorption systems. The sandwich tubes were laterally crushed under quasi-static loading conditions. The sandwich tubes were crushed under two types of indenters and exposed to three different types of external constraints. The collapsing behaviour and the energy absorption responses of these systems were investigated by nonlinear finite element analysis through ANSYS-LS-DYNA. Various indicators which describe the effectiveness of energy absorbing systems were used as a marker to compare the various systems. It was found that the sandwich tube systems compressed by cylindrical indenters particularly the unconstrained system and the system with inclined constraints offered a very desirable force-deflection in which the force is almost constant in the post collapse stage. The employing of external constraints was noticed as a feasible method of increasing the SEA particularly when cylindrical indenter is used.
Original languageEnglish
Pages (from-to)371-384
JournalMaterialwissenschaft und Werkstofftechnik
Volume45
Issue number5
DOIs
Publication statusPublished - 2014

Fingerprint

Energy absorption
tubes
energy absorption
Aluminum
Foams
Finite element method
circular tubes
foams
markers
deflection
aluminum
energy

Keywords

  • aluminium foam
  • ANSYS-LSDYNA
  • lateral collapse
  • energy absorbing systems
  • Sandwich tube

Cite this

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abstract = "In this paper, sandwich tube components which consist of thin-walled circular tubes with aluminium foam core are proposed as energy absorption systems. The sandwich tubes were laterally crushed under quasi-static loading conditions. The sandwich tubes were crushed under two types of indenters and exposed to three different types of external constraints. The collapsing behaviour and the energy absorption responses of these systems were investigated by nonlinear finite element analysis through ANSYS-LS-DYNA. Various indicators which describe the effectiveness of energy absorbing systems were used as a marker to compare the various systems. It was found that the sandwich tube systems compressed by cylindrical indenters particularly the unconstrained system and the system with inclined constraints offered a very desirable force-deflection in which the force is almost constant in the post collapse stage. The employing of external constraints was noticed as a feasible method of increasing the SEA particularly when cylindrical indenter is used.",
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Lateral collapse of short-length sandwich tubes compressed by different indenters and exposed to external constraints. / Baroutaji, A.; Olabi, A. G.

In: Materialwissenschaft und Werkstofftechnik, Vol. 45, No. 5, 2014, p. 371-384.

Research output: Contribution to journalArticle

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AU - Baroutaji, A.

AU - Olabi, A. G.

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KW - aluminium foam

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