Development of deformation model for simulation of mechanical behaviors of coated-cladding
- Authors
- Kim, Dong-Hyun; Kim, Hyo Chan; Shin, Chang Hwan; Kim, Hak-Sung
- Issue Date
- Oct-2018
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Accident tolerant fuel (ATF); coated-cladding; mechanical behaviors; analytical model; equivalent finite element model; FRACAS-CT; FRAPCON4.0P01
- Citation
- JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, v.55, no.10, pp.1225 - 1234
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
- Volume
- 55
- Number
- 10
- Start Page
- 1225
- End Page
- 1234
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/16061
- DOI
- 10.1080/00223131.2018.1486243
- ISSN
- 0022-3131
- Abstract
- A coated fuel cladding is one of the promising accident tolerant fuel (ATF) cladding concepts to enhance the fuel safety for accident conditions. In this study, a new analytical model called Fuel Rod and Cladding Analysis Subcode-Coated Cladding (FRACAS-CT), used to evaluate the mechanical behaviors of the ATF cladding, has been developed employing both thick-walled theory and some methodologies of the FRACAS. Based on the methodology of FRACAS, two different regimes of pellet-cladding mechanical interactions according to the gap status were considered as follows: one is an open-gap regime, and the other is a closed-gap regime. FRACAS-CT was developed within a limited scope of an elastic solution under the assumption of the prescribed creep, irradiation growth, and thermal deformation. To verify the FRACAS-CT model, an equivalent finite element (FE) model was proposed, and the mechanical behaviors of FRACAS-CT were compared with those of the equivalent FE model. As a result, it was determined that the stress results of FRACAS-CT are highly consistent with those of the equivalent FE model. Furthermore, FRACAS-CT was implemented into the FRAPCON4.0P1 code system to evaluate the mechanical behaviors of the ATF cladding using in-reactor conditions.
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