About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Modeling of Laser Interactions with Metals Using a Hybrid Atomistic-continuum Approach |
Author(s) |
Ching Chen, Sergey Galitskiy, Avanish Mishra, Avinash M. Dongare |
On-Site Speaker (Planned) |
Ching Chen |
Abstract Scope |
The modeling of interaction of metallic materials with lasers requires an accurate description of laser energy absorption, heat generation/transfer, and energy dissipation that can result in ablation, spallation, melting and shock compression. Such a capability is available through a hybrid atomistic-continuum method that combines classical molecular dynamics (MD) with the two-temperature model (TTM) to model the ultra-fast heating, melting, and shock generation in metals. The MD-TTM framework is extended to FCC Al and BCC Ta systems, wherein the electronic-temperature-dependent electron heat capacity, electron thermal conductivity, and electron-phonon coupling factor are parameterized via first principles simulations. The capability is demonstrated by investigating the spall failure behaviors of Al and Ta single-crystal systems under femtosecond laser shock loading. The talk will discuss the details of MD-TTM simulations, including the implementation of the framework, the parameterization of the TTM, and the interaction of lasers with microstructure of Al and Ta systems. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Modeling and Simulation, Computational Materials Science & Engineering |