| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2020)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2020)
|
| Presentation Title |
Assessment of Influence of Damage on Component Properties by Model Predictions |
| Author(s) |
Alexander Schowtjak, Oliver Hering, Rickmer Meya, A. Erman Tekkaya, Till Clausmeyer |
| On-Site Speaker (Planned) |
Till Clausmeyer |
| Abstract Scope |
The existence and evolution of voids affect component properties such as the impact energy in Charpy-like tests and the elastic stiffness. Different material model classes (Gurson-Tvergaard-Needleman model, a Lemaitre-type model and various failure criteria) are evaluated based on their ability to predict the observed experimental behavior of components manufactured by air bending and cold forward extrusion qualitatively. While it is obvious that the GTN model and the failure criteria cannot describe the change in the elastic behavior, changes are expected for the Lemaitre model. Different material parameter sets are identified based on parameter identification strategies relying solely on force-displacement data, the experimentally determined spatial distribution of voids and combinations of these. It is observed that the available models cannot simultaneously account for the measured void volume fraction and the decrease in strength and stiffness. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |