Inverse design of spinodoid structures through Bayesian optimization
Activity: Talk or presentation at external institutions/events › Talk/Presentation › Contributed
Persons and affiliations
- Alexander Raßloff - , Chair of Computational and Experimental Solid Mechanics (Speaker)
- Paul Seibert - , Chair of Computational and Experimental Solid Mechanics (Involved person)
- Karl Alexander Kalina - , Chair of Computational and Experimental Solid Mechanics (Involved person)
- Markus Kästner - , Chair of Computational and Experimental Solid Mechanics, Dresden Center for Computational Materials Science (DCMS) (Involved person)
Date
22 Jul 2024
Description
In this contribution, we propose a general framework to inversely designing mesostructures using structure-property linkages. Typically, large datasets are necessary. Experiments alone are prohibitively expensive. Therefore, computationalaugmentation is employed to allow for data-driven approaches even in this data scarce regime. In an iterative procedure (1) mesostructures are characterized by descriptors, (2) effective properties are derived from numerical simulations, (3) structureproperty linkages are set up using a Gaussian process, (4) descriptors of new candidate mesostructures are proposed by Bayesian optimization and (5) mesostructures are reconstructed. Steps 2 through 5 are repeated until a desired convergence criterion is reached, e.g., the uncertainty of the structure-property linkage is decreased or a mesostructured with preferable properties is found. This framework is applied and presented at the example of spinodoid structures. Augmenting a small initial data set by in silico reconstructed spinodoid structures and their simulated effective properties allows for deriving improved structure-property linkages and, thus, finding potentially optimal structures or predicting properties.
Conference
| Title | 16th World Congress on Computational Mechanics & 4th Pan American Congress on Computational Mechanics |
|---|---|
| Abbreviated title | WCCM 2024 / PANACM 2024 |
| Duration | 21 - 26 July 2024 |
| Location | Vancouver Convention Centre |
| City | Vancouver |
| Country | Canada |
Keywords
Keywords
- Inverse design, Materials design, Architected materials, Bayesian optimization