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- W2622122779 abstract "The aim of this study is to define a macroscopic fragmentation model based on a micro mechanical approach to have a better understanding of the fuel mechanical behaviour at lower scale: size and volume fraction of fragments. This talk introduces a stepwise micromechanical method: firstly, we detail how to model the HBS microstructure including pressurized porosities, based on experimental or numerical data and define a Representative Volume Element (RVE). Then we use 3D full field computations in order to determine crack snapshot. Elastic computations are performed to find the bubbles pressure level which is required to reach the cracks initiation threshold. Then nonlinear computations, using a failure local behavior law, are conducted to identify the failure snpashot. The latters will be used as an input data of the homogenization (“macroscopic”) model. This model is exposed in the last section." @default.
- W2622122779 created "2017-06-15" @default.
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- W2622122779 date "2016-11-07" @default.
- W2622122779 modified "2023-09-27" @default.
- W2622122779 title "Modelling the fuel failure behavior with a micromechanical approach in the HBS area" @default.
- W2622122779 hasPublicationYear "2016" @default.
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