About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
AI/Data Informatics: Applications and Uncertainty Quantification at Atomistics and Mesoscales
|
Presentation Title |
Microstructure-driven Parameter Calibration for Mesoscale Simulation |
Author(s) |
Theron M. Rodgers, Dan Bolintineanu, Daniel Moser, Reeju Pokharel |
On-Site Speaker (Planned) |
Theron M. Rodgers |
Abstract Scope |
Mesoscale microstructure simulation techniques often have parameters that are difficult or impossible to determine experimentally. The growing use of advanced microstructure characterization techniques offers increasing availability of quantitative experimental data. Here, we present an approach to calibrate unknown simulation data through direct comparison of simulated microstructures with experimental data. Two studies utilizing this approach will be presented: calibration of a rules-based model of thermal spray deposition with 3D µCT data and calibration of 3D grain growth simulations with 2D EBSD data. Parameter calibration is performed using optimization methods available in Sandia’s Open Source Dakota software. A range of optimization approaches are explored including Gaussian process and the use of surrogate models.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA000352 |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Surface Modification and Coatings |