| 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 |
Predicting Fracture of Severe Pre-strained EN-AW 5182 during Hot-stamping Operations: A Thermal Extension of GISSMO and the Hosford-Coulomb Fracture Model |
| Author(s) |
Alan A. Camberg, Tobias Erhart, Thomas Tröster |
| On-Site Speaker (Planned) |
Alan A. Camberg |
| Abstract Scope |
A temperature-dependent extension of the well-established GISSMO fracture framework and the Hosford-Coulomb fracture model was developed by the authors to predict forming failures in hot-stamping processes. In this contribution, the applicability of both models is examined by the example of the Flash Forming Process, a hot-stamping process of severe work-hardened 5000-series aluminum alloy sheets. First, a parameter identification for a temperature range between 25 and 300 °C is carried out at different stress states and strain rates. The identified parameters are implemented into the developed model and coupled with a temperature-dependent Yld89 anisotropic yield function and a temperature- and rate-dependent isotropic strain hardening model. The models are used to simulate a hot-stamping process of an automotive part using a coupled thermo-mechanical FEA. Finally, simulations are compared with experimental data at different forming temperatures to evaluate the model’s ability to predict forming and failure behavior. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |