| Autor: |
Kong Xiangzhe, Tian Xu, Yan Feng, Ding Shurong, Hu Shenyang, Burkes Douglas E. |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Open Engineering, Vol 8, Iss 1, Pp 243-260 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2391-5439 |
| DOI: |
10.1515/eng-2018-0029 |
| Popis: |
Monolithic UMo fuels have a higher uranium density than previously developed fuels. They have become the most promising fuels to be used in high-flux research and test reactors after the US Office of Material Management and Minimization Reactor Conversion Program (formerly Reduced Enrichment Research and Test Reactor (RERTR) program). In this study, a computational method is established to couple the macro-scale irradiation-induced thermo-mechanical behavior simulation with the hydrostatic-pressure-dependent fission gas swelling calculation in the UMo grain. The stress update algorithms and consistent stiffness moduli are respectively presented for UMo fuel, in which both the hydrostatic-pressure-dependent irradiation swelling and deviatoric-stress-directed irradiation creep are taken into account. Accordingly, the user subroutines to define the thermo-mechanical non-homogeneous constitutive relations for the UMo fuel meat and Al cladding are developed and validated. The in-pile behavior in a monolithic UMo fuel plate under a location-dependent irradiation condition is calculated and discussed. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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