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 |
Assessment of Calibration Strategies and Model Predictions for Damage in Formed Components |
| Author(s) |
Alexander Schowtjak, Oliver Hering, Rickmer Meya, A. Erman Tekkaya, Till Clausmeyer |
| On-Site Speaker (Planned) |
Alexander Schowtjak |
| Abstract Scope |
The existence and evolution of voids affect component properties such as mass density, strength and elastic stiffness. Material models for the prediction of such properties need to be calibrated. In this work, an efficient and robust methodology for the parameter identification that enables an accurate prediction of the void area fraction is presented. A parameter identification scheme based on macroscopic quantities is applied to a Lemaitre damage model. This model is used to predict the void evolution in the process chain of calibre rolling with subsequent forward rod extrusion. Additionally, a parameter identification strategy based on experimental void analysis is performed for a Gurson-Tvergaard-Needleman model and applied to air bending. Both strategies are analysed with regard to their prediction qualities in terms of void evolution based on high-resolution scanning electron microscopy measurements. The predicted mass density and strength are compared to experimental data to assess the quality of prediction. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |