Anja Mauko (Author), Mustafa Sarikaya (Author), Mustafa Güden (Author), Isabel Duarte (Author), Matej Borovinšek (Author), Matej Vesenjak (Author), Zoran Ren (Author)

Abstract

This study investigated the high-strain rate mechanical properties of open-cell aluminium foam M-pore®. While previous research has examined the response of this type of foam under quasi-static and transitional dynamic loading conditions, there is a lack of knowledge about its behaviour under higher strain rates (transitional and shock loading regimes). To address this gap in understanding, cylindrical open-cell foam specimens were tested using a modified Direct Impact Hopkinson Bar (DIHB) apparatus over a wide range of strain rates, up to 93 m/s. The results showed a strong dependency of the foam's behaviour on the loading rate, with increased plateau stress and changes in deformation front formation and propagation at higher strain rates. The internal structure of the specimens was examined using X-ray micro-computed tomography (mCT). The mCT images were used to build simplified 3D numerical models of analysed aluminium foam specimens that were used in computational simulations of their behaviour under all experimentally tested loading regimes using LS-DYNA software. The overall agreement between the experimental and computational results was good enough to validate the built numerical models capable of correctly simulating the mechanical response of analysed aluminium foam at different loading rates.

Keywords

odprte celične strukture;mikro računalniška tomografija;visoka stopnja obremenitve;preizkuševališče Split Hopkinson Pressure Bar;digitalna slikovna korelacija;računalniške simulacije;open-cell aluminium foam;micro-computed tomography;high-strain rate;direct impact hopkinson bar;digital image correlation;computer simulations;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: Elsevier
UDC: 539.2:004.94
COBISS: 160823299 Link will open in a new window
ISSN: 2238-7854
Views: 270
Downloads: 19
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: odprte celične strukture;mikro računalniška tomografija;visoka stopnja obremenitve;preizkuševališče Split Hopkinson Pressure Bar;digitalna slikovna korelacija;računalniške simulacije;
Type (COBISS): Article
Pages: str. 1208-1221
Issue: ǂVol. ǂ25
Chronology: July-August 2023
DOI: 10.1016/j.jmrt.2023.05.280
ID: 21473249