| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
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| Symposium
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Structure-Property Relationships in Molecular Crystal Deformation
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| Presentation Title |
high-fidelity simulations of shock to detonation transition |
| Author(s) |
Marisol Koslowski |
| On-Site Speaker (Planned) |
Marisol Koslowski |
| Abstract Scope |
Localized regions of high temperature, known as hot-spots, develop when energetic materials are subjected to dynamic loading. The size and temperature of hot-pots are controlled by the microstructure, including voids, micro-cracks, grain boundaries, and interfaces. The length scales associated with these processes at the microstructure level range from nanometers to micrometers. However, typical run-to-detonation distances in energetic materials are in the millimeter scale. Therefore, surrogate hot-spot models need to be developed to understand their effect on detonation.
We present simulations of shock and cyclic loading in polycrystalline energetic materials and polymer bonded explosives. We focus on interface defects such as grain boundaries and polymer/particle interfaces. With these results, we develop surrogate models using ML methods and incorporate them into finite element simulations. We present finite element simulations that combine these surrogate models with mesoscale behavior to predict their relationship to the sensitivity of the material to detonation.
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| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Machine Learning, Computational Materials Science & Engineering |