Quasi-static, impact and energy absorption of internally nested tubes subjected to lateral loading

A. Baroutaji, M. D. Gilchrist, A. G. Olabi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This paper presents the responses of nested tube systems under quasi-static and dynamic lateral loading. Nested systems in the form of short internally stacked tubes were proposed as energy absorbing structures for applications that have limited crush zones. Three configurations of nested tube systems were experimentally analysed in this paper. The crush behaviour and energy absorbing responses of these systems under various loading conditions were presented and discussed. It was found that the quasi-static and dynamic responses of the nested systems were comparable under an experimental velocity of v=4.5 m/sec. This is due to insignificant strain rate and inertia effects of the nested systems under the applied velocity. The performance indicators, which describe the effectiveness of energy absorbing systems, were calculated to compare the various nested systems and the best system was identified. Furthermore, the effects of geometrical and loading parameters on the responses of the best nested tube system were explored via performing parametric analysis. The parametric study was performed using validated finite element models. The outcome of this parametric study was full detailed design guidelines for such nested tube energy absorbing structures.

Original languageEnglish
Pages (from-to)337-350
Number of pages14
JournalThin-Walled Structures
Early online date20 Oct 2015
Publication statusPublished - Jan 2016

Bibliographical note

Funding Information:
The first author wishes to gratefully acknowledge the financial support from the University of Aleppo.


  • Dynamic loading
  • Energy absorbing systems
  • Lateral collapse
  • Nested tubes
  • Quasi-static loading


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