High strain rate compressive behaviour of aluminium alloy foams

By V. Deshpande, Norman A. Fleck. International Journal of Impact Engineering, 2000

605 citations recorded by the source corpus.

The high strain rate compressive behaviour of two cellular aluminium alloys (Alulight and Duocel) has been investigated using the split Hopkinson pressure bar and direct impact tests. It is found that the dynamic behaviour of these foams is very similar to their quasi-static behaviour. The plateau stress is almost insensitive to strain rate, for strain rates e5 up to 5000 s~1. Deformation is localised in weak bands in the Alulight foam but is spatially uniform for the Duocel foam, over the full range of strain rates 10~3 s~1)e5 ) 5000 s~1. ( 2000 Elsevier Science Ltd. All rights reserved.

Subfields: Civil and Structural Engineering, Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/914d3225ad88c52c57d10119974a212c6ae95ff3

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Citations in the corpus

Dynamic compressive behaviour of cellular materials: A review of phenomenon, mechanism and modelling (2018, positive): “Indeed, the analytical estimate using Gibson-Ashby equations [1] leads to conclusions that the gas effect in metal foams is negligible even at densification initiation strain [59, 64, 65], whereas the above equations can predict much higher stress enhancement at large strains depending on Poisson’s ”
The compressive response of porcine adipose tissue from low to high strain rate (2012, background): “However, Deshpande and Fleck [18] have demonstrated that an elastic analysis suffices for PC bars in their Hopkinson bar tests on metallic foams.”
FE modelling of deformation localization in metallic foams (2002, background): “Deshpande and Fleck [21] found that the dynamic behaviour of cellular aluminium foams is very similar to their quasistatic behaviour up to a strain rate of 5000 s−1.”
The high strain rate response of PVC foams and end-grain balsa wood (2008, background): “For example Deshpande and Fleck [3] have shown that K _ e 10 for a bending-governed cellular material with a cubic microstructure.”
Energy absorption in lattice structures in dynamics: Experiments (2016, methodology): “Deshpande and Fleck (2000) verified rate insensitive73 behaviour of two particular types of aluminium foam under high strain rates74 by split Hopkinson pressure bar (HPB) and direct impact tests.”
A numerical study on the rate sensitivity of cellular metals (2009, background): “However, as pointed out by Deshpande and Fleck (2000), metallic foams behave as Type I structures and deform predominantly by the bending of cell edges.”