Characterisation of out-of-plane shear behaviour of anisotropic sheet materials based on indentation plastometry

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

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.

• Jezik: Angleški jezik
• Ključne besede: plastic anisotropy, out-of-plane shear resistance, indentation test, indentation plastometry, YLD2004–18p, yield function
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: 15 str.
• Številčenje: Vol. 253, art. 108403
• PID: 20.500.12556/RUL-145687
• UDK: 620.1:621.795.8
• ISSN pri članku: 0020-7403
• DOI: 10.1016/j.ijmecsci.2023.108403
• COBISS.SI-ID: 149875203
• Datum objave v RUL: 09.05.2023

Gradivo je del revije

• Naslov: International journal of mechanical sciences
• Skrajšan naslov: Int. j. mech. sci.
• Založnik: Elsevier
• ISSN: 0020-7403
• COBISS.SI-ID: 25648384

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: plastična anizotropija, odpor proti strigu izven ravnine, preskus z vtiskovanjem, plastometrija z vtiskovanjem, YLD2004-18p, funkcija plastičnosti