About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
A Mesoscale-continuum Modeling Method to Predict the Acceleration of Laser-driven Flyers |
Author(s) |
Ching Chen, Roshan Sebastian, Jacob M. Diamond, Kaliat T. Ramesh, Avinash M. Dongare |
On-Site Speaker (Planned) |
Ching Chen |
Abstract Scope |
A laser-driven micro-flyer system enables high-throughput testing of shock compression response and spall failure of a material by accelerating a very thin flyer to velocities of up to a few km/s and impacting on a thin plate of the target material. Understanding the achievable velocities of flyers, however, requires the ability to predict energy absorption and heat generation/dissipation behaviors during the interaction of flyer materials with short-pulse lasers. This talk presents a new hybrid mesoscale-continuum approach to model the laser-driven acceleration of flyers at the length and time scales of experiments. The mesoscale approach uses quasi-coarse-grained-dynamics (QCGD) method coupling with a continuum two-temperature model (TTM) to model laser-material interactions and the acceleration of flyers. The talk will present the role of laser parameters on predicted flyer velocities for various materials (Al, Cu, Ti, Ta, etc.) and discuss the contributions from ablation and melting that result in the acceleration of flyers. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Phase Transformations, Modeling and Simulation |