About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Microstructure-Sensitive Modeling Across Length Scales: An MPMD/SMD Symposium in Honor of David L. McDowell
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| Presentation Title |
A Two-Surface Modeling to Improve Creep-Fatigue Predictions |
| Author(s) |
Jean-Briac le Graverend |
| On-Site Speaker (Planned) |
Jean-Briac le Graverend |
| Abstract Scope |
Two-surface modeling was historically developed for fatigue loading to memorize the prior maximum plastic strain range. Chaboche, Ohno, and McDowell are amongst those who pioneered the two-surface modeling under the umbrella of bounding-surface theory. In parallel, a vast amount of work has been
developed to improve the predictions of creep-fatigue performance and complex modeling approaches have been proposed. Since fatigue and creep do not have the same deformation mechanisms, what is hereby proposed is to formulate a two-surface model with each surface responsible for a loading type, i.e., either creep or fatigue. The two surfaces are coupled via their hardening variables and a criterion to ascertain when a surface is activated. The approach is implemented in a crystal-plasticity framework and tested on stress-controlled and strain-controlled loadings. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, High-Temperature Materials, Mechanical Properties |