Temperature Dependency of Modified Mohr–Coulomb Criterion Parameters for Advanced High Strength Dual-Phase Steel DP780

Yukuan Li; Di Li; Hui Song; Yiqun Wang; Dongze Wu

doi:10.3390/met14060721

Metals (Jun 2024)

Temperature Dependency of Modified Mohr–Coulomb Criterion Parameters for Advanced High Strength Dual-Phase Steel DP780

Yukuan Li,
Di Li,
Hui Song,
Yiqun Wang,
Dongze Wu

Affiliations

Yukuan Li: School of Traffic and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Di Li: School of Traffic and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Hui Song: School of Traffic and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Yiqun Wang: School of Traffic and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
Dongze Wu: School of Traffic and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China

DOI: https://doi.org/10.3390/met14060721
Journal volume & issue: Vol. 14, no. 6
p. 721

Abstract

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The Modified Mohr–Coulomb criterion has been demonstrated to exhibit high accuracy in the prediction of fracture in high-strength steels. Taking DP780 as the research object, the undetermined parameters of the Modified Mohr–Coulomb criterion at different temperatures were calibrated by tensile and shear tests combined with simulation. The relationships between the parameters and temperature were investigated. Finally, the relationship between criterion parameters and temperature was verified using the stretch-bending tests of U-shape parts. The fracture of automotive parts can be accurately predicted by simulation during warm stamping, thereby guiding actual production.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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