Characterisation of aluminium matrix syntactic foams dynamic loading

M. Altenaiji, Zhong Wei Guan, W. Cantwell, Y. Y. Zhao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

It is a challenging task to develop a lightweight but also strong material with energy absorption capability to be used in vehicles to withstand impact and blast. This paper reports the research results on Aluminium syntactic foams as possible core materials for protection of military vehicles. In order to optimize their mechanical performance the characterisation of the foam behaviour at high strain rates and identification of the underlying mechanisms have been conducted. Mechanical tests were carried out on syntactic foams under high strain rate compression loading. The drop weight and split Hopkinson pressure bar (SHPB) techniques have been used to obtain data on the material behaviour under dynamic loading conditions. It was found that some samples show 30% higher plateau stress in the drop weight test than that of the quasi-static compression. In addition, it was found that the energy absorption of the aluminium matrix syntactic foam is higher than that of the ordinary aluminium foam. Experimental results from the above investigation are compared with the finite element predictions under the same loading conditions. Reasonably good correlation is obtained. The discussion on developing numerical modelling and the related validation are also given.

Original languageBritish English
Title of host publicationAdvances in Mechanical and Manufacturing Engineering
Pages449-454
Number of pages6
DOIs
StatePublished - 2014

Publication series

NameApplied Mechanics and Materials
Volume564
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Keywords

  • Drop weight impact
  • Energy absorption
  • Finite element
  • Metal matrix syntactic foam
  • Split hopkinson pressure bar

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