About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
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Presentation Title |
Physics-informed Machine Learning Model for Plasticity-mediated Void Growth in FCC Single Crystals |
Author(s) |
Karl Garbrecht, Andrea Rovinelli, Jacob Hochhalter, Paul Christodoulou, Ricardo Lebensohn, Laurent Capolungo |
On-Site Speaker (Planned) |
Karl Garbrecht |
Abstract Scope |
A new homogenization law able to quantify the coupling between void growth and plasticity in porous single crystals has been developed via a combined physics-informed genetic programming-based symbolic regression (P-GPSR) algorithm and established constitutive model development procedures. Using data generated from dilatational viscoplastic FFT-based simulations, a set of data-driven expressions was learned that encapsulates the behavior of a plastically deforming FCC crystal with randomly distributed voids that interact with each other. By strongly enforcing known model components in the overall solution, the data-driven expressions were constrained such that their physical significance was known before conducting P-GPSR. We exploited this knowledge to determine physics-informed regularization criteria and implemented a P-GPSR algorithm that can simultaneously learn multiple expressions with unique regularization criteria. These expressions were propagated through the analytical procedures to produce a model that is theoretically consistent and captures the behavior of microstructurally complex materials. |
Proceedings Inclusion? |
Planned: |
Keywords |
Machine Learning, Computational Materials Science & Engineering, Iron and Steel |