고준위폐기물 처분장치 및 완충장치에 대한 탄소성해석 : 비대칭 암반력An Elastoplatic Analysis for Spent Nuclear Fuel Disposal Container and Its Bentonite Buffer : Asymmetric Rock Movement
- Other Titles
- An Elastoplatic Analysis for Spent Nuclear Fuel Disposal Container and Its Bentonite Buffer : Asymmetric Rock Movement
- Authors
- 권영주; 최석호
- Issue Date
- 2003
- Publisher
- 한국소성가공학회
- Keywords
- Spent Nuclear Fuel; Disposal Container; Bentonite Buffer; Rock Movement; Elastoplastic Structural Analysis; Yield Criterion. Finite Element Analysis; Spent Nuclear Fuel; Disposal Container; Bentonite Buffer; Rock Movement; Elastoplastic Structural Analysis; Yield Criterion. Finite Element Analysis
- Citation
- 소성가공, v.12, no.5, pp.479 - 486
- Journal Title
- 소성가공
- Volume
- 12
- Number
- 5
- Start Page
- 479
- End Page
- 486
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/26521
- ISSN
- 1225-696X
- Abstract
- This paper presents an elastoplastic analysis for spent nuclear fuel disposal container and its 50 cm thick bentonite buffer to predict the collapse of the container while the horizontal asymmetric sudden rock movement of 10 cm is applied on the composite structure. This sudden rock movement is anticipated by the earthquake etc. at a deep underground. Elastoplastic material model is adopted. Drucker-Prager yield criterion is used for the material yield prediction of the bentonite buffer and von-Mises yield criterion is used for the material yield prediction of the container. Analysis results show that even though very large deformations occur beyond the yield point in the bentonite buffer, the container structure still endures elastic small strains and stresses below the yield strength. Hence, the asymmetric 50 cm thick bentonite buffer can protect the container safely against the 10 cm sudden rock movement by earthquake etc.. Analysis results also show that bending deformations occur in the container structure due to the shear deformation of the bentonite buffer. The finite element analysis code, NISA, is used for the analysis.
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