About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Algorithms Development in Materials Science and Engineering
|
| Presentation Title |
Modeling and Simulation of the Thermo-Mechanical Behavior of Polycrystalline Energetic Systems Under 3-D 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 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 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. The multi-scale model is then coupled with an ignition criterion accounting for the chemical reactions kinetic leading to ignition. Impact simulation reveals that the influence of the presence of voids on the increase of temperature due to the conversion into heat of the local plastic dissipation, and on subsequent ignition of the energetic material. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Other |