Inverse calibration of out-of-plane shear anisotropy parameters of sheet metal

Starman, Bojan (author), Pepelnjak, Tomaž (author), Maček, Andraž (author), Halilovič, Miroslav (author), Coppieters, Sam (author)

The accurate description of sheet metal forming processes such as blanking, riveting, incremental forming, and ironing strongly depends on understanding the material’s through-thickness shear resistance and plastic behavior. A three-dimensional model of plastic anisotropy is required to capture this behavior, but calibrating the out-of-plane shear parameters is often challenging. Researchers frequently assume isotropy or set the in-plane and out-of-plane shear parameters equal. More advanced approaches use a crystal plasticity model, which also requires calibration based on available material texture data. In this work, we introduce an out-of-plane shear test procedure that combines a macromechanical test with digital image correlation to inversely calibrate the shear anisotropy parameters of the YLD2004-18p yield function. This method efficiently characterizes both in- plane and out-of-plane shear anisotropy in medium-thick sheet metals.

• Language: English
• Keywords: plastic anisotropy, shear testing, YLD2004–18p yield function, material identification, digital image correlation
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Author Accepted Manuscript
• Publication date: 27.02.2025
• Year: 2025
• Number of pages: 20 str.
• Numbering: Vol. 313, art. 113313
• PID: 20.500.12556/RUL-167651
• UDC: 621
• ISSN on article: 1879-2146
• DOI: 10.1016/j.ijsolstr.2025.113313
• COBISS.SI-ID: 227822851
• Publication date in RUL: 05.03.2025

Record is a part of a journal

• Title: International Journal of Solids and Structures
• Publisher: Pergamon
• ISSN: 1879-2146
• COBISS.SI-ID: 23269637

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: plastična anizotropija, strižno testiranje, YLD2004–18p funkcija tečenja, materialna identifikacija, metoda korelacije digitalnih slik