Nejc Novak (Avtor), Miha Kolar (Avtor), Nima Movahedi (Avtor), Matej Vesenjak (Avtor), Zoran Ren (Avtor), Thomas Fiedler (Avtor)

Povzetek

This paper proposes an innovative multi-material approach for introducing auxetic behaviour to syntactic foams (SFs). By carefully designing the size, shape, and orientation of the SFs, auxetic deformation behaviour was induced. Re-entrant hexagon-shaped SF elements were fabricated using expanded perlite (EP) particles and a plaster of Paris slurry first. Then, an auxetic pattern of these SF elements was arranged within a stainless-steel casting box. The empty spaces between the SF elements were filled with molten aluminium alloy (A356) using the counter-gravity infiltration casting technique. The cast auxetic composite had a bulk density of 1.52 g/cm3. The cast composite was then compressed under quasi-static loading to characterise its deformation behaviour and to determine the mechanical properties, especially the Poisson’s ratio. The cast composite deformation was auxetic with a Poisson’s ratio of −1.04. Finite Element (FE) simulations were conducted to understand the deformation mechanism better and provide means for further optimisation of the geometry.

Ključne besede

avksetične celične strukture;sintaktične pene;eksperimentalni testi;mehanske lastnosti;auxetic cellular structure;syntactic foams;experimental tests;mechanical properties;Poisson’s ratio;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FS - Fakulteta za strojništvo
Založnik: MDPI
UDK: 539.2:620.1
COBISS: 190687491 Povezava se bo odprla v novem oknu
ISSN: 2075-4701
Št. ogledov: 222
Št. prenosov: 30
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: avksetične celične strukture;sintaktične pene;eksperimentalni testi;mehanske lastnosti;
Vrsta dela (COBISS): Članek v reviji
Strani: 12 str.
Letnik: ǂVol. ǂ14
Zvezek: ǂiss. ǂ4, [article no.] 387
Čas izdaje: March 2024
DOI: 10.3390/met14040387
ID: 23281704