About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
|
Presentation Title |
Modeling the Microstructure Evolution of a 3D Polycrystal Using a Recurrent Neural Network With Physics Informed Loss Functions |
Author(s) |
Ashley Lenau, Reeju Pokharel, Alexander Scheinker, Stephen Niezgoda |
On-Site Speaker (Planned) |
Ashley Lenau |
Abstract Scope |
High energy x-ray diffraction is a state-of-the-art technique to study 3D microstructure evolution of materials and provides valuable information on how a single sample deforms. Crystal plasticity simulations using finite element or spectral methods may be faster than performing the experiment itself but are still computationally expensive to model evolutions of large 3D microstructures. Machine learning algorithms have faster generation times by several orders of magnitude but lack numerical accuracy compared to these numerical methods. In this research, a recurrent neural network is used to predict the microstructure evolution of a copper polycrystal at different strain increments. Given previous states of the microstructure, the network predicts the elastic strain and crystal orientation at the next strain step. The loss function incorporates fundamental equations describing the system, like Hooke’s law, disorientation, and stress equilibrium, to enforce the physical boundary conditions of the system and increase the accuracy of the network predictions. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Computational Materials Science & Engineering, Modeling and Simulation |