Characterization of Aluminum Foam Impact Response

The paper addresses the investigation of high-strain rate compressive behavior of Al foams subjected to impact at the intermediate striking velocity ranged from 40 to roughly about 80 m/s. Relatively ductile AlSiMg foam and high-strength AlZnMg foam, whose cell walls contain numerous brittle eutecti...

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Bibliographic Details
Published in:Strength of materials 2019-09, Vol.51 (5), p.726-734
Main Authors: Byakova, O. V., Stepanov, G. V., Vlasov, A. O., Danylyuk, V. E., Semenov, N. V., Berezovs’kyi, O. M., Gnyloskurenko, S. V.
Format: Article
Language:English
Subjects:
Aluminum
Brittleness
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Collapse
Compressive properties
Cracking (fracturing)
Domains
Fracture mechanics
Impact response
Materials Science
Metal foams
Solid Mechanics
Strain analysis
Strain rate sensitivity
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Summary:The paper addresses the investigation of high-strain rate compressive behavior of Al foams subjected to impact at the intermediate striking velocity ranged from 40 to roughly about 80 m/s. Relatively ductile AlSiMg foam and high-strength AlZnMg foam, whose cell walls contain numerous brittle eutectic domains, are used in the experiments. Strain-rate sensitivity for different structural kinds of Al foams is determined by comparison of the plateau stress achieved at the dynamical and quasistatic compression. Difference in the dynamical response of these Al foams is revealed and clarified based on the strain rate and inertia effects under conditions of plastic cell collapse or brittle damage of the cell wall material induced by cracking of eutectic domains.
ISSN:0039-2316
1573-9325
DOI:10.1007/s11223-019-00121-5