APPARATUS AND METHOD OF ANALYZING STRESS OF ACCIDENT TOLERANT FUEL AND COMPUTER READABLE MEDIUM

According to an embodiment of the present invention, a stress analysis device of accident tolerant fuel is configured of a multi-layer structure of a cylindrical cladding pipe layer provided with a fuel pellet inside and a cylindrical coating layer which is coated onto an outer circumferential surfa...

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Bibliographic Details
Main Authors SHIN CHANG HWAN, YANG YONG SIK, YANG JAE HO, KIM HYO CHAN, KIM HYUN GIL, KIM DONG HYUN
Format Patent
LanguageEnglish
Korean
Published 24.12.2019
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Summary:According to an embodiment of the present invention, a stress analysis device of accident tolerant fuel is configured of a multi-layer structure of a cylindrical cladding pipe layer provided with a fuel pellet inside and a cylindrical coating layer which is coated onto an outer circumferential surface of the cylindrical cladding pipe layer and is formed of different materials from the cylindrical cladding pipe layer. The stress analysis device of accident tolerant fuel comprises: a modeling unit modeling a stress equation of a radial (r) direction, a circumferential (θ) direction, and an axial (z) direction with regard to the cylindrical cladding pipe layer and the cylindrical coating layer; a first calculation unit obtaining an unknown value of the stress equation by applying boundary conditions between the cylindrical cladding pipe layer and the cylindrical coating layer to the modeled stress equation; and a second calculation unit obtaining stress of the radial (r) direction, the circumferential (θ) direction, and the axial (z) direction for each of the cylindrical cladding pipe layer and the cylindrical coating layer by substituting the unknown value into the stress equation. 본 발명의 일 실시 형태에 따른 사고 저항성 핵연료의 응력 해석 장치는, 내부에 핵연료 펠릿이 구비된 원통형 피복관층과, 원통형 피복관층의 외주면에 코팅되며 원통형 피복관층과는 다른 재질로 구성된 원통형 코팅층의 다층 구조로 구성된 사고 저항성 핵연료의 응력 해석 장치에 있어서, 원통형 피복관층 및 원통형 코팅층 각 층에 대하여, 반경(r) 방향, 원주(θ) 방향 및 축(z) 방향의 응력 방정식을 모델링하는 모델링부와, 모델링된 응력 방정식에 원통형 피복관층과 원통형 코팅층 간의 경계 조건을 적용하여 응력 방정식의 미지수를 구하는 제1 연산부와, 구한 미지수를 응력 방정식에 대입하여 원통형 피복관층 및 원통형 코팅층 각 층에 대한 반경(r) 방향, 원주(θ) 방향 및 축(z) 방향의 응력을 구하는 제2 연산부를 포함할 수 있다.
Bibliography:Application Number: KR20180068309