Citation

Attia MS, Meguid SA, Tan KT, Yeo SC. Int. J. Crashworthiness 2010; 15(4): 357-367.

Copyright

(Copyright © 2010, Informa - Taylor and Francis Group)

DOI

10.1080/13588260903457748

PMID

unavailable

Abstract

In this paper, we develop and implement high-resolution, computationally efficient multi-cell finite-element (FE) models of metallic foams in order to more accurately investigate the collapse behaviour of these emerging materials. The main objective is to investigate the effect of morphological imperfections at the cellular scale on the global response of the cellular material. Attention was therefore devoted to three related aspects of the work. The first is concerned with the development of FE models of metallic foams accounting for morphological imperfections at the cellular level. The second is concerned with conducting parametric studies of different model parameters and examining their effect on the instantaneous load-deformation history, peak collapse loads and energy absorption levels of the foam. The third is devoted to a thorough comparison of the numerical simulations with experimental results. Results revealed the influence of these imperfections on low-density foams, and to a much lesser extent on high-density ones.