About this Abstract | 
  
   
    | Meeting | 
    2024 TMS Annual Meeting & Exhibition
       | 
  
   
    | Symposium 
       | 
    AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
       | 
  
   
    | 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 |