About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
|
Presentation Title |
Two-step Upscaling for the Response of Ceramic Based Composites in Nuclear Reactors |
Author(s) |
Kevin Spilker, Laurent Capolungo, Ricardo Lebensohn, George Jacobsen |
On-Site Speaker (Planned) |
Kevin Spilker |
Abstract Scope |
Silicon carbide (SiC) based weave structures are candidate materials for the building of clads for fuel rods in modern nuclear reactors, as SiC has the capability to maintain its material properties in extreme environments, including irradiation, high thermal loads or corrosive conditions, and the woven structure allows the resistance of the cladding against multiaxial loading conditions during temperature and irradiation swelling.
In this work, a two-step upscaling approach is introduced for the efficient determination of the effective response of the cladding material. For the micro to mesoscale bridging, a mean field homogenization (MFH) based model for the fibrous microstructure is developed, enriched by the integration of localized mechanisms like microcracking, debonding and interfacial effects. The MFH based model allows to perform mesoscale simulations of weaves by respecting the microstructure. These mesoscale simulations allow the generation of mechanical databases for the fast determination of the clads responses. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Composites, Ceramics |