J-Integral Estimate for Circumferential Cracked Pipes Under Primary and Secondary Stress in R6, RCC-MR A16

원주방향 균열 배관에 대한 R6, RCC-MR A16 코드에 의한 1,2 차 복합 하중하에서 J-적분 비교

  • Received : 2012.12.03
  • Accepted : 2013.02.13
  • Published : 2013.05.01


This paper provides a comparison of the J-integral estimation method under combined primary and secondary stress in the R6, RCC-MR A16 code. The comparisons of each code are based on finite element analysis using ABAQUS with regard to the crack shape, crack depth, and magnitude of secondary load. The estimate of the R6 code is conservative near $L_r=1$, and that of the RCC-MR A16 code is conservative near $L_r=0$. As a result, this paper proposes a modified method of J-integral estimation in the R6, RCC_MR A16 code. The J-integral using the modified method corresponds to the finite element analysis result.


Primary Stress;Secondary Stress;J-Integral;V-Factor;Reference Stress


Supported by : 한국연구재단


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