Nuclear Engineering and Technology

  • 제55권11호
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  • Pages.4146-4158
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  • 2023
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Failure simulation of nuclear pressure vessel under severe accident conditions: Part I - Material constitutive modeling

  • Eui-Kyun Park (Mechanical Engineering, Korea University) ;
  • Ji-Su Kim (Materials Safety Technology Research Division, Korea Atomic Energy Research Institute) ;
  • Jun-Won Park (Mechanical Engineering, Korea University) ;
  • Yun-Jae Kim (Mechanical Engineering, Korea University) ;
  • Yukio Takahashi (Central Research Institute of Electric Power Industry) ;
  • Kukhee Lim (Korea Institute of Nuclear Safety)
  • 투고 : 2023.05.28
  • 심사 : 2023.07.26
  • 발행 : 2023.11.25
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초록

This paper proposes a combined plastic and creep constitutive model of A533B1 pressure vessel steel to simulate progressive deformation of nuclear pressure vessels under severe accident conditions. To develop the model, recent tensile test data covering a wide range of temperatures (from RT to 1,100 ℃) and strain rates (from 0.001%/s to 1.0%/s) was used. Comparison with experimental data confirms that the proposed combined plastic and creep model can well reflect effects of temperature and strain rate on tensile behaviour up to failure. In the companion paper (Part II), the proposed model will be used to simulate OECD lower head failure (OLHF) test data.

키워드

과제정보

This work was supported by the Nuclear Safety Research Program through the Korea Foundation Of Nuclear Safety (KoFONS) using the financial resource granted by the Nuclear Safety and Security Commission (NSSC) of the Republic of Korea. (No. 2103079).

참고문헌

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