Abstract
For metallic materials, high-cycle fatigue life is sensitive to underlying microstructure features including secondary phases, textures, grains morphology, etc. The traditional, data-based safe-life approaches for modeling fatigue don't explicitly consider the microstructure and can't guide study in microstructure modification for improved fatigue property. Crystal plasticity-based simulation provides increased model fidelity at the expense of immense computation time, making it inapplicable for high cycle fatigue. In this work, an acceleration method based on cycle-jump approach (Lesne and Savalle, 1989) was developed for microstructure-based high-cycle FE simulation using crystal plasticity constitutive-model. This method demonstrated high efficiency in benchmark tests of various conditions.
| Original language | English |
|---|---|
| Article number | 107185 |
| Journal | International Journal of Fatigue |
| Volume | 165 |
| DOIs | |
| State | Published - Dec 2022 |
Funding
This research was sponsored by the Oak Ridge National Laboratory (ORNL), Manufacturing Science Division. ORNL is managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract DE-AC05 00OR22725 . This research was funded by the US Department of Energy, Advanced Manufacturing Office. We would like to thank Dr. Sumit Bahl and Dr. Amit Shyam for providing the ACMZ EBSD data. We also like to thank Dr. Patxi Fernandez-Zelaia for the discussion in this research.
Keywords
- Crystal plasticity
- Finite element
- High cycle simulation
- Microstructure