1. Mechanism elucidation of high-pressure generation in cellular metal at high-velocity impactMasatoshi Nishi, Shigeru Tanaka, Akihisa Mori, Matej Vesenjak, Zoran Ren, Kazuyuki Hokamoto, 2022, izvirni znanstveni članek Opis: Cellular metals exhibit diverse properties, depending on their geometries and base materials. This study investigated the mechanism of high-pressure generation during the high-velocity
impact of unidirectional cellular (UniPore) materials. Cubic UniPore copper samples were mounted
on a projectile and subjected to impact loading using a powder gun to induce direct impact of samples.
The specimens exhibited a unique phenomenon of high-pressure generation near the pores during
compression. We elucidate the mechanism of the high-pressure phenomenon and discuss the pore
geometries that contribute to the generation of high pressures.
Ključne besede: cellular metal, high-pressure, high-velocity impact, computational simulation, metal jet
Objavljeno v DKUM: 24.03.2025; Ogledov: 0; Prenosov: 2
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2. Computational simulations of unidirectional cellular material unipore subjected to dynamic loadingMatej Vesenjak, Kazuyuki Hokamoto, Zoran Ren, 2012, objavljeni znanstveni prispevek na konferenci Opis: Cellular structures have an attractive combination of mechanical properties and are increasingly used in modern engineering applications. Consequently, the research of their behaviour under quasi-static and dynamic loading is valuable for engineering applications such as those related to strain energy absorption. The paper focuses on behaviour of a newly developed cellular structure UniPore with unidirectional pores under dynamic loading. The computational model of the cellular structure was based on realistic (reconstructed) irregular geometry of the manufactured specimens and analysed using the code LS-DYNA. The mechanical properties have been investigated by means of parametric computational simulations considering various material and geometrical parameters. Additionally, the influence of the gaseous pore filler influence has been considered using fully coupled computational models. Furthermore, with computational simulations also the influence of the anisotropy has been evaluated.
Ključne besede: cellular materials, computational model, UniPore
Objavljeno v DKUM: 10.07.2015; Ogledov: 903; Prenosov: 36
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3. Dynamic property of aluminium foamSeiichi Irie, Toshihiko Okano, Shigeru Tanaka, Matej Vesenjak, Zoran Ren, Kazuyuki Hokamoto, Shigeru Itoh, 2010, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: aluminium foam, powder gun, high strain rate
Objavljeno v DKUM: 10.07.2015; Ogledov: 1739; Prenosov: 50
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