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

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Engineering J-Integral Estimation for Internal Axial Surface Cracks in Cylinders (II) -Optimised Reference Stress Based Estimation-

실린더에 존재하는 축방향 표면균열에 대한 공학적 J-적분식 (II) - 최적참조응력에 기초한 방법-

  • 김진수 (성균관대학교 기계공학부) ;
  • 김윤재 (성균관대학교 기계공학부) ;
  • 김영진 (성균관대학교 기계공학부)
  • Published : 2002.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper provides an reference stress based J estimation equation fur cylinders with finite internal axial surface cracks under internal pressure. In part 1, the J estimation equation based on deformation plasticity using Ramberg-Osgood (R-0) materials is proposed. In this paper, the developed CE/EPRI -type solutions ale then re-formulated based on the reference stress concept. Such a re-formulation provides a simpler equation for J. estimation are then further extended to combined internal pressure and bending. The proposed reference stress based J estimation equation is compared with elastic-plastic 3-D FE results using actual stress-strain data for a Type 304 stainless steel. Good agreement between the FE results and the proposed reference stress based J estimations provides confidence in the use of the proposed method to elastic -plastic fracture mechanics of pressurised piping.

Keywords

References

  1. Kim, J.S., Kim, Y.J., Park, Y.J. and Kim, Y.J., 2002. 'Engineering J-Integral Estimation for Internal Axial Surface Cracks in Cylinder (I)-Deformation Plasticity Based Estimation-,' Transactions of the KSME, A, Vol. 26, No.8, pp. 1672-1679 https://doi.org/10.3795/KSME-A.2002.26.8.1672
  2. Kumar, V. and German, M.D., 1988, Elastic-Plastic Fracture Analysis of Through- Wall and Surface Flaws in Cylinders, EPRI Report, NP-5596
  3. Zahoor, A., 1991, Ductile Fracture Handbook, Vol. 2 Chapter 6 Axial Through-Wall Crack, Novetech Corp.
  4. Rahman, S., Brust, F., Ghadiali, N., Choi, Y.H., Krishnaswamy, P., Moberg, F., Brickstad, B. and Wilkowski, G., 1995, 'Refinement and Evaluation of Crack Opening Area Analyses for Circumferential Through-Wall Cracks in Pipes,' NUREG report NUREG/CR-6300, Battelle, OH
  5. Kim, Y.J., Huh, N.S. and Kim, Y.J., 2001, 'Enhanced Reference Stress Based J and COD Estimation Method for LBB Analysis and Comparison with GE/EPRI Method,' Fatigue and Fracture of Engineering Materials and Structures, Vol. 24, pp. 243-254 https://doi.org/10.1046/j.1460-2695.2001.00388.x
  6. Ainsworth, R.A, 1984, 'The Assessment of Defects in Structures of Strain Hardening Materials,' Engineering Fracture Mechanics, Vol. 19, pp. 633-642 https://doi.org/10.1016/0013-7944(84)90096-1
  7. Kim, Y.J., Huh, N.S. and Kim, Y.J., 2002, 'Pressure Induced Hoop Stress Effect on Fracture Analysis of Circumferential Through-Wall Cracked Pipes,' Engineering Fracture Mechanics (to appear)
  8. R6, 2000, R6: Assessment of the Integrity of Structures Containing Defects, Revision 3, British Energy Generation Ltd.
  9. Kim, J.S, Kim, Y.J. and Kim Y.J., 2002, 'Fracture Behavior Estimation for Circumferential Surface Cracked Pipes (I) -J-Integral Estimation Solution -,' Transactions of the KSME, A, Vol. 26, No. 1, pp. 131-138 https://doi.org/10.3795/KSME-A.2002.26.1.131
  10. Kim, Y.J., Seok, C.S., Jun, H.K., Choi, Y.H. and Lee, J.B., 1996, 'Development of Nuclear Piping Integrity Expert System (I) -Evaluation Method Recommendation and Material Properties Inference-,' Transactions of the KSME, A, Vol. 20, No.8, pp. 575-584
  11. ABAQUS, 1999, ABAQUS Standard/User's Manual, Hibbitt, Karlsson & Sorensen, Inc, R1
  12. Kim, Y.J., Shim, D.J., Huh, N.S. and Kim, Y.J., 2001, 'Plastic Limit Pressure for Cracked Cylinders Using Finite Element Limit Analyses,' International Journal of Pressure Vessels and Piping (to appear)
  13. Kiefner, J.F., Maxey, W.A., Eiber, R.J. and Duffy, A.R., 1973, 'Failure Stress Levels of Flaws in Pressurised Cylinders,' in Progress in Flaw Growth and Fracture Toughness Testing, ASTM STP 536, pp. 461-81
  14. Miller, A.G., 'Review of Limit Loads of Structures Containing Defects,' International Journal of Pressure Vessels and Piping, Vol. 32, pp. 191-327 https://doi.org/10.1016/0308-0161(88)90073-7
  15. Kim, Y.J., Huh, N.S., Part, Y.J. and Kim, Y.J., 2001, 'Elastic-Plastic J and COD Estimations for Axial Through-Wall Cracked Pipes,' International Journal of Pressure Vessels and Piping (to appear) https://doi.org/10.1016/S0308-0161(02)00030-3
  16. Webster, G.A. and Ainsworth, R.A., 1994, High Temperature Component Life Assessment, Chapman & Hall
  17. R5, 1998, R5: Assessment Procedure for the High Temperature Response of Structures, Issue 2, British Energy Generation Ltd
  18. Kim, J.S, Kim, Y.J. and Kim Y.J., 2002, 'Estimation of C'-Integral for Defective Components with General Creep Deformation Behaviors,' Transactions of the KSME, A, Vol. 26, No.5, pp. 795-802 https://doi.org/10.3795/KSME-A.2002.26.5.795