20.500.12556/DKUM-86511 High strain-rate deformation analysis of open-cell aluminium foam 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. Open-cell aluminium foam Micro-computed tomography High-strain rate Direct impact hopkinson bar Digital image correlation Computer simulation odprte celične strukture mikro računalniška tomografija visoka stopnja obremenitve preizkuševališče Split Hopkinson Pressure Bar digitalna slikovna korelacija računalniške simulacije true true true Elsevier Angleški jezik Slovenski jezik https://www.elsevier.com/ Članek v reviji 2023-12-06 10:30:07 2023-12-06 14:37:02 2024-04-02 12:22:42 0000-00-00 00:00:00 2023 0 0 str. 1208-1221 Vol. 25 2023 0000-00-00 Zaloznikova NiDoloceno apc 0000-00-00 2023-05-31 2023-06-15 2238-7854 539.2:004.94 160823299 10.1016/j.jmrt.2023.05.280 2238-7854 Clanek.pdf Clanek.pdf 1 32C48A4A1E90AC5D59C8DD90224A91F8 b2276889e66d775c121eb0f5f6c934306f98197d46f4d9e6d952900843facbc4 1b59242a-941a-11ee-8142-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=174676 https://www.sciencedirect.com/science/article/pii/S2238785423012462?via%3Dihub 0 e3ca9682-943e-11ee-8142-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=174684 Fakulteta za strojništvo 0 0 0