High rate compressive behavior of aluminum foams by modified SHPB technique

Shanqing Xu, J Shen, John Beynon, Dong Ruan, Guoxing Lu

Research output: Contribution to conferencePaper

4 Citations (Scopus)

Abstract

The two-wave-separation method is employed for the large strain measurements in compressive tests on Alporas aluminum closed cell foams. Specimens 50mm in diameter and 25mm thick, prepared by wire cutting, were tested. Parameters such as the start time for calculating wave pulses and specimen thickness that would greatly influence the experimental results are discussed. Finite element modeling verified that the stressstrain curves obtained using the modified split Hopkinson pressure bar (SHPB) technique are reasonable. The results were compared with those from quasi-static and intermediate strain rate compressive testing. It is shown that the relative density is a major factor that affects the foam properties. Strain rate also has a great influence on the densification strain, normalized plateau stress and energy absorption capacity of foams, indicating that Alporas closed cell aluminum foams are sensitive to strain rate.

Original languageEnglish
Pages727-732
Number of pages6
Publication statusPublished - 1 Dec 2011
EventACMSM21 -
Duration: 7 Dec 2010 → …

Conference

ConferenceACMSM21
Period7/12/10 → …

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  • Cite this

    Xu, S., Shen, J., Beynon, J., Ruan, D., & Lu, G. (2011). High rate compressive behavior of aluminum foams by modified SHPB technique. 727-732. Paper presented at ACMSM21, .