| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
Modeling Shear Fracture at High Strain Rates: Numerical Simulation of Shock-driven Extrusion Test |
| Author(s) |
Gabriel Testa, Gianluca Iannitti, Andrew Ruggiero, Sara Ricci, Nicola Bonora |
| On-Site Speaker (Planned) |
Gabriel Testa |
| Abstract Scope |
The shock-driven extrusion test, developed at LLNL, is a unique test configuration that allows to investigate fracture by shear localization at very high strain rates (10^6/s). This test consists of shock loading a thin sample of the material of interest backed by a centrally perforated plate. This setup causes the extrusion through the perforated plate, shearing the material as in a hole punch. In this work, the plasticity-damage self-consistent (PDSC) model, recently extended to account for strain rate and temperature effects, was used to simulate shock-driven extrusion in Ti-6Al-4V, which is known to exhibit a shear effect on fracture strain. Model validation was performed by comparing the calculated velocity histories, fragment size and fracture surface features. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Titanium |