Development of FRACAS-CT module with FRAPCON4.0P01 for simulation of mechanical behaviors for accident-tolerant fuel cladding in a reactor
- Authors
- Kim, Dong-Hyun; Kim, Hyochan; Shin, Changhwan; Kim, Hak-Sung
- Issue Date
- Aug-2019
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Fuel performance code; accident tolerant fuel (ATF) cladding; mechanical module; FRACAS-CT; FRAPCON4
- Citation
- JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, v.56, no.8, pp.671 - 683
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
- Volume
- 56
- Number
- 8
- Start Page
- 671
- End Page
- 683
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/13234
- DOI
- 10.1080/00223131.2019.1624653
- ISSN
- 0022-3131
- Abstract
- In order to evaluate the mechanical behaviors of accident-tolerant fuel (ATF) cladding under reactor conditions, a new analytical module, termed FRACAS-CT, was developed. A mechanical model of FRACAS-CT was formulated based on thick-wall theory to consider the multi-layered structure of ATF cladding. Two statuses of a pellet-cladding gap, that is, open and closed, were described by several boundary conditions of pressures, inside radial displacements, and axial strains of the multi-layered ATF cladding. The FRACAS-CT model was verified by comparison with an equivalent finite element (FE) model and was implemented into FRAPCON4.0P1 with consideration of creep and stress relaxation behaviors of the multi-layered ATF cladding. After the implementation, code verification work was performed, and finally, mechanical behaviors and fuel performance of the multi-layered ATF cladding were calculated under normal operating conditions. As a result, the implemented FRACAS-CT can simulate the mechanical response and fuel performance of the multi-layered ATF cladding.
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