| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
|
| Presentation Title |
A Mesoscale Modeling Approach to Predict Microstructural Evolution during Hypervelocity Impact of Aluminum |
| Author(s) |
Roshan Sebastian, Ching Chen, Avinash M Dongare |
| On-Site Speaker (Planned) |
Roshan Sebastian |
| Abstract Scope |
Hypervelocity impacts (HVI) explore material deformation under extreme loading conditions by accelerating a projectile onto a substrate at very high velocities (up to ten km/s). The impact leads to localized high-strain rate deformation, resulting in cratering or penetration in the substrate. While several continuum simulations predict these phenomena, the capability to explicitly capture microstructural evolution (melting, recrystallization) is largely limited. This talk demonstrates the capability of the Quasi-Coarse-Grained Dynamics (QCGD) to predict the dynamic evolution of localized temperatures, pressures, related shock wave propagation, and microstructure during the impact of Al particles (20 ‒ 100 µm) onto Al substrates at velocities ranging from 2 to 10 km/s. The QCGD method is based on the coarse-graining of atomic scale microstructures and uses scaling relationships to retain the energetics of materials and the deformation behavior. In addition to the QCGD framework, factors that affect deformation and disintegration of the substrate will be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, Other |