| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structure-Property Relationships in Molecular Crystal Deformation
|
| Presentation Title |
Multi-Scale Model For Describing The Thermo-Mechanical Behavior Of Polycrystalline Energetic System Subjected To Dynamic Loadings |
| Author(s) |
Benoit Revil-Baudard |
| On-Site Speaker (Planned) |
Benoit Revil-Baudard |
| Abstract Scope |
A new polycrystalline model describing the thermo-mechanical response of energetic materials is presented. In our multi-scale computational polycrystalline framework, at the grain-level, the plastic behavior is described using a recently developed anisotropic single-crystal model accounting for the intrinsic symmetries of the crystalline lattice. The orientation, strains, and stresses in each crystal are continuously updated, such that the macroscopic scale response considers the evolution of the meso-scale thermo-mechanical state. Illustrations of the model capabilities for dynamic loading show large differences in temperature and stresses between the constituent grains with local rise in temperature much larger than the macroscopic value. FE impact’s simulations of a penetrator containing an energetic system provide insights into the complex interactions between the energetic system and the casing material. If the crystallinity is neglected, the predicted temperature rise and extent of the zone of maximum heating in the energetic system differ noticeably from our polycrystalline model’s predictions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, ICME, |