Roman Satošek (Avtor), Tomaž Pepelnjak (Avtor), Bojan Starman (Avtor)

Povzetek

This paper presents a new methodology for characterising the out-of-plane plastic anisotropy behaviour of sheet metal, based on indentation testing. Conventionally, advanced yield criteria are used to describe plastic anisotropy, requiring multiple in-plane mechanical tests (such as uniaxial and biaxial tests) to calibrate a model. However, in certain forming applications (e.g. blanking, ironing and incremental forming), the influence of mechanical behaviour through thickness cannot be ignored, necessitating the characterisation of out-of-plane material behaviour. To do this, a 3D plastic anisotropy model must be used and calibrated for the out-of-plane shear parameters, which can be difficult to determine. Researchers often assume an isotropic case or equal shear parameters for in-plane and out-of-plane behaviour. More advanced calibrations involve the crystal plasticity model. In this work, we propose a two-stage calibration procedure. In the first stage, we calibrate the in-plane parameters of the YLD2004-18p yield function conventionally. In the second stage, after fixing the in-plane parameters, we determine the remaining out-of-plane shear parameters based on the results of the ball indentation test. We show for the first time that out-of-plane shear parameters can be determined from a macro-mechanical test for a 2.42 mm thick cold-rolled AA5754-H22 series aluminium sheet.

Ključne besede

plastic anisotropy;out-of-plane shear resistance;indentation test;indentation plastometry;YLD2004-18p;yield function;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 620.1:621.795.8
COBISS: 149875203 Povezava se bo odprla v novem oknu
ISSN: 0020-7403
Št. ogledov: 119
Št. prenosov: 12
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: plastična anizotropija;odpor proti strigu izven ravnine;preskus z vtiskovanjem;plastometrija z vtiskovanjem;YLD2004-18p;funkcija plastičnosti;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-15
Zvezek: ǂVol. ǂ253
Čas izdaje: Sep. 2023
DOI: 10.1016/j.ijmecsci.2023.108403
ID: 18852154