| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Crystal Plasticity-based Finite Element Simulations of Hat-shaped Draw-bending to Predict Springback Behavior of Dual-phase Steels |
| Author(s) |
Marko Knezevic |
| On-Site Speaker (Planned) |
Marko Knezevic |
| Abstract Scope |
Evolution of dislocation structures and underlying backstress fields influencing the phenomena such as unloading nonlinearity, Bauschinger effect, and changes in hardening rates during reverse loading remain an area of active research and debate. This paper is concerned with predicting geometrical shape changes in sheet metal forming using a multi-level simulation framework that considers such microstructural evolution and the directionality of deformation mechanisms acting at single-crystal level. The model is an elasto-plastic self-consistent (EPSC) homogenization of single-crystal behavior providing a constitutive response at each finite element integration point, within the boundary value problem solved using continuum finite elements at the macro-level. The model parameters associated with the slip strengths and backstress of ferrite and martensite are established by reproducing a comprehensive set of monotonic and cyclic data for dual-phase steels 590, 780, and 1180. The potential of the EPSC modeling framework is illustrated by simulating hat-shaped draw-bending of the steel sheets. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Shaping and Forming, Iron and Steel |