About this Abstract |
Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
Presentation Title |
Ductile Fracture Prediction of Hot Stamped Boron Steel 22MnB5 with Modified Mohr-Coulomb and Hosford-Coulomb Models |
Author(s) |
Fangxing Wang, Bingtao Tang, Ning Guo, Huiping Li, Qiaoling Wang |
On-Site Speaker (Planned) |
Bingtao Tang |
Abstract Scope |
With the increasing demand of the reduction of energy consumption and enhancement of automobile safety, the ultra-high strength steels are widely used in automobile industry. Due to the high achievable strength, hot stamping process can be used to supply promising automobile components. This paper is concerned with plasticity and ductile fracture modelling of hot stamped boron steel 22MnB5, where martensite phase with high yield strength, work hardening and ductility are present. The Mohr-Coulomb criteria, extensively and originally used in rock and soil and other relatively brittle materials, are implemented using VUMAT in ABAQUS. Parameters of the selected fracture criteria are determined using calibration tests with various kinds of specimen. Fracture properties and flow curves up to large strains are determined from single phase tensile experiments using DIC. The final hole expansion test shows that the Mohr-Coulomb ductile fracture criterion is suitable to model ductile fracture in metal forming processes. |
Proceedings Inclusion? |
Definite: At-meeting proceedings |