About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
|
| Presentation Title |
Modeling Laser-Induced Microparticle Acceleration Using a Mesoscale-Continuum Approach |
| Author(s) |
Ching Chen, Avinash M. Dongare |
| On-Site Speaker (Planned) |
Ching Chen |
| Abstract Scope |
The laser-driven particle acceleration allows exploring the response of materials to local high-strain-rate deformation by accelerating individual microparticles that impact a target with velocities of up to a few km/s. The design of these experiments, however, relies on the capability to predict particle velocities, which requires the ability to model laser energy absorption/dissipation and the microstructural evolution in particles. A novel mesoscale-continuum approach integrates the quasi-coarse-grained-dynamics (QCGD) method with the two-temperature model (TTM) to predict laser interaction with metal particles at experimental scales. QCGD-TTM simulations are carried out to investigate the role of laser parameters and target configurations on the achievable velocity of 100-µm Al particles using a high-energy laser with a pulse duration of 10 ns to 40 ns. The talk will discuss the QCGD-TTM framework, the microstructure evolution during the interaction with the lasers, and the diagnostics (pressure, temperature, and velocity profiles) in virtual laser-driven particle acceleration experiments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Mechanical Properties |