Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Development of a Three Dimensional Elastic Plastic Analysis System for the Integrity Evaluation of Nuclear Power Plant Components

원자력발전소 주요기기의 건전성 평가를 위한 3차원 탄소성 해석 시스템의 개발

  • Published : 2000.08.01
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Abstract

In order to evaluate the integrity of nuclear power plant components, the analysis based on fracture mechanics is crucial. For this purpose, finite element method is popularly used to obtain J-integral. However, it is time consuming to design the finite element model of a cracked structure. Also, the J-integral should be verified by alternative methods since it may differ depending on the calculation method. The objective of this paper is to develop a three-dimensional elastic-plastic J-integral analysis system which is named as EPAS program. The EPAS program consists of an automatic mesh generator for a through-wall crack and a surface crack, a solver based on ABAQUS program, and a J-integral calculation program which provides DI (Domain Integral) and EDI (Equivalent Domain Integral) based J-integral calculation. Using the EPAS program, an optimized finite element model for a cracked structure can be generated and corresponding J-integral can be obtained subsequently.

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References

  1. 허남수, 김영진 등, 1999, '차세대 원전배관의 LBB 적용을 위한 수정배관평가선도의 개발,' 대한기계학회논문집 A권, 제23권, 제5호, pp. 763-771
  2. 1995, 'Evaluation of Reactor Pressure Vessels with Charpy Upper-Shelf Energy Less Than 50 ft-lb,' Reg. Guide 1.161, USNRC.
  3. Parks, D.M., 1977, 'The Virtual Crack Extension Method for Nonlinear Material Behavior,' Computer Methods in Applied Mechanics and Engineering, Vol. 12, pp. 353-364 https://doi.org/10.1016/0045-7825(77)90023-8
  4. Hellen, T.K., 1975, 'On the Method of Virtual Crack Extensions,' Int. Journal of Numerical Methods in Engineering, Vol. 9, pp. 187-207 https://doi.org/10.1002/nme.1620090114
  5. deLorenzi, H.G., 1982, 'On the Energy Release Rate and the J-integral for 3-D Crack Configurations,' Int. Journal of Fracture, Vol. 19, pp. 183-193 https://doi.org/10.1007/BF00017129
  6. deLorenzi, H.G., 1985, 'Energy Release Rate Calculations by the Finite Element Method,' Engineering Fracture Mechanics, Vol. 21, pp. 129-143 https://doi.org/10.1016/0013-7944(85)90060-8
  7. Bass, B.R. and Bryson, J.W., 1983, 'Energy Release Rate Techniques for Combined Thermo-Mechanical Loading,' Int. Journal of Fracture, Vol. 22, R3-R7 https://doi.org/10.1007/BF00960100
  8. 1998, 'ABAQUS User's manual,' Hibbitt, Karlson & Sorensen, Inc.
  9. Nikishkov, G.P. and Atluri, S.N., 1987, 'An Equivalent Domain Integral Method for Computing Crack-Tip Integral Parameters in Non-Elastic, Thermo-Mechanical Fracture,' Engineering Fracture Mechanics, Vol. 26, pp. 851-867 https://doi.org/10.1016/0013-7944(87)90034-8
  10. Nikishkov, G.P. and Atluri, S.N., 1987, 'Three-Dimensional Elastic-Plastic J-integral Calculations for Semi-Elliptical Surface Cracks in a Tensile Plate,' Engineering Fracture Mechanics, pp. 81-87 https://doi.org/10.1016/0013-7944(88)90008-2
  11. Shih, C.F., Moran, B. and Nakamura, T., 1986, 'Energy Release Rate along a Three-Dimensional Crack Front in a Thermally Stressed Body,' Int. Journal of Fracture, Vol. 30, pp. 79-102 https://doi.org/10.1007/BF00034019
  12. Norris, D.M. and Chexal, B., 1987, 'PICEP : Pipe Crack Evaluation Program,' EPRI Report NP 3596-SR
  13. 1987, 'Approximate Methods for Fracture Analysis of Through-Wall Cracked Pipe,' NUREG/CR-4853, USNRC
  14. Zahoor, A., 1989, 'Ductile Fracture Handbook, Vol. I,' Electric Power Research Institute