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

被引：0
|
作者：
Li, Yukuan [1 ]
Li, Di [1 ]
Song, Hui [1 ]
Wang, Yiqun [1 ]
Wu, Dongze [1 ]
机构：
[1] Shandong Univ Technol, Sch Traff & Vehicle Engn, Zibo 255000, Peoples R China
来源：
METALS | 2024年 / 14卷 / 06期
关键词：
advanced high strength dual-phase steel; modified Mohr-Coulomb criterion; DP780; stress triaxiality; temperature dependency; DUCTILE FRACTURE; PREDICTION; PLASTICITY;
D O I：
10.3390/met14060721
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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页数：15
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