About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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AI/Data Informatics: Computational Model Development, Validation, and Uncertainty Quantification
|
Presentation Title |
Graph Neural Network Framework to Emulate Multiple Crack Propagation and Coalescence |
Author(s) |
Roberto Perera Aguiar, Vinamra Agrawal, Davide Guzzetti |
On-Site Speaker (Planned) |
Roberto Perera Aguiar |
Abstract Scope |
Emulating complex problems of fracture mechanics requires the use of existing, or newly developed high-fidelity models. These models typically work by solving intricate systems where computational costs and time requirements scale up with problem complexity. A possible solution to circumvent these challenges involves reduced-order modeling techniques, such as Machine Learning (ML). A recently developed ML method for emulating large-scale complex physics while reducing computational costs is Graph Neural Networks (GNNs). GNNs work by integrating supervised ML along with graph theory. This work develops a GNN based framework for emulating fracture in brittle materials due to multiple crack interaction, and coalescence. The framework consists of four GNNs: the first three for predicting Mode-I and Mode-II stress intensity factors, and identifying propagating microcracks, respectively; and the final GNN for predicting subsequent crack-tip positions. The trained GNN framework emulates crack propagation and coalescence for systems involving 5 to 19 microcracks with good accuracy. |
Proceedings Inclusion? |
Planned: |
Keywords |
Machine Learning, Modeling and Simulation, Computational Materials Science & Engineering |