한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제18권7호
  • /
  • Pages.85-90
  • /
  • 2001
  • /
  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

원주방향 관통균열이 존재하는 배관의 새로운 J-적분 및 COD 계산식-인장하중과 굽힘모멘트가 동시에 작용하는 경우

New Engineering J and COD Estimation Method for Circumferential Through-Wall Cracked Pipes-Combined Tension and Bending Load

  • 허남수 (성균관대학교 기계공학부) ;
  • 김윤재 (성균관대학교 기계공학부) ;
  • 김영진 (성균관대학교 기계공학부)
  • Huh, Nam-Su (Dept.of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Yun-Jae (Dept.of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Young-Jin (Dept.of Mechanical Engineering, Sungkyunkwan University)
  • 발행 : 2001.07.01
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초록

In order to apply the Leak-Before-Break(LBB)concept to nuclear piping, accurate estimation of J-integral and crack opening displacement(COD) is essential for complex loading, such as combined tension and bending. This paper proposes a new engineering method to estimate J-integral and the COD for circumferential through-wall cracked pipes subject to combined tension and bending loading. The proposed method to estimate the COD is validated against three published pipe test data, generated from a monotonically increasing bending load with a constant internal pressure, which shows excellent agreements.

키워드

참고문헌

  1. Rahman, S., Brust, F.W., Ghadiali, N., and Wilkowski, G., 'Crack-Opening-Area Analyses for Circumferential Through-Wall Cracks in Pipes - Part I : Analysis Models,' International Journal of Pressure Vessels and Piping, Vol. 75, pp. 357-373, 1998 https://doi.org/10.1016/S0308-0161(97)00081-1
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  11. Miller, A.G., 'Review of Limit Loads of Structures Containing Defects,' International Journal of Pressure Vessels and Piping, Vol. 32, pp. 191-327, 1998 https://doi.org/10.1016/0308-0161(88)90073-7
  12. 'Pipe Fracture Test Data,' Pipe Fracture Encyclopedia, Vol. 3, Battelle, 1997
  13. Rahman, S., Brust, F.W., Ghadiali, N., and Wilkowski, G., 'Crack-Opening-Area Analyses for Circumferential Through-Wall Cracks in Pipes - Part II : Model Validations,' International Journal of Pressure Vessels and Piping, Vol. 75, pp. 375-396, 1998 https://doi.org/10.1016/S0308-0161(97)00082-3
  14. 허남수, 김윤재, 김영진, '복합하중이 작용하는 원자력 배관의 파단전누설 해석을 위한 개선된 참조응력법의 수치해석적 검증,' 한국정밀공학회지, 제18권, 제6호, pp. 67-73, 2001