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High strain rate hardening of metallic cellular metamaterials [Elektronski vir]Novak, Nejc, strojnik, 1991- ; Vesenjak, Matej ; Ren, ZoranStrain rate hardening caused by the changed deformation mode is a fascinating phenomenon in cellular metamaterials where the material’s stiffness and energy absorption capabilities increase as the ... strain rate increases. This unique behaviour is attributed to a combination of micro-inertia effects, base material’s strain rate hardening and inertia effects. At high strain rates, the metamaterial’s inertia influences its deformation response, which changes to shock mode. This work briefly presents the geometry and fabrication of different metallic metamaterials. Then, it evaluates their mechanical response at different strain rates, ranging from quasi-static to intermediate dynamic and shock, determined by experimental and computational investigation. The three deformation modes can be separated into two critical loading velocities, unique for each metamaterial, which are also presented and compared in this work for various metamaterials. The investigations show that the deformation mode change in metallic metamaterials depends on their porosity. The critical velocities separating the deformation modes decrease with increasing porosity, i.e., decreased density of the metamaterial results in reduced critical loading velocities. The shock deformation mode in cellular metamaterials is thus attainable at much lower loading velocities than in homogeneous (nonporous) materials.Vir: Journal of dynamic behavior of materials [Elektronski vir]. - ISSN 2199-7454 (Vol. 10, iss. 2, 20 May 2024, 15 str.)Vrsta gradiva - e-članek ; neleposlovje za odrasleLeto - 2024Jezik - angleškiCOBISS.SI-ID - 196314371
Avtor
Novak, Nejc, strojnik, 1991- |
Vesenjak, Matej |
Ren, Zoran
Teme
metamateriali |
celične strukture |
visoka stopnja deformacije |
eksperimentalno testiranje |
računalniško modeliranje |
tlačno obremenjevanje |
mehanske lastnosti |
metamaterials |
cellular structures |
high strain rate |
experimental testing |
computational modelling |
compression loading |
mechanical properties
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Avtor | Novak, Nejc, strojnik, 1991- ; Vesenjak, Matej ; Ren, Zoran |
Naslov | High strain rate hardening of metallic cellular metamaterials [Elektronski vir] |
Datum objave | 2024-05-20 |
COBISS.SI-ID | 196314371 |
Verzija objave v repozitoriju | Založnikova različica |
Licenca objave v repozitoriju | Creative Commons Priznanje avtorstva 4.0 Mednarodna |
Embargo | Takojšnja javna objava |
Projekti, iz katerih je bila financirana objava
Naziv | Akronim | Številka projekta | Financer |
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Konstruiranje celičnih struktur | P2-0063-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Novak, Nejc, strojnik, 1991- | 38219 |
Vesenjak, Matej | 23463 |
Ren, Zoran | 08779 |
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