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 |
A Data-driven Approach for Predicting the Stress-strain Curves of FCC Polycrystalline Metals |
Author(s) |
Jing Luo, Yejun Gu, Jaafar El-Awady |
On-Site Speaker (Planned) |
Jing Luo |
Abstract Scope |
Accurately and efficiently predicting stress-strain curves of metals based on variations in microstructure is challenging. This is addressed here by developing a multiscale theoretical model based on dislocation plasticity for FCC polycrystals. The evolution of dislocation density per grain was predicted by training a data-driven model with input from experiments. Features in the data driven model include the average grain size, applied strain, size of samples, Young’s modulus and lattice constants. Inconsistency of experimental measurements can be attributed to variations in microstructural features, which are rarely quantified experimentally. To address this, the uncertainty in the predicted stress-strain curves is quantified by predicting the upper and lower bounds. This model will provide an insightful guide for further materials design. |
Proceedings Inclusion? |
Planned: |
Keywords |
Machine Learning, Modeling and Simulation, Computational Materials Science & Engineering |