Transactions of the Korean Society of Pressure Vessels and Piping (한국압력기기공학회 논문집)

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Analytical Equivalent Stiffness Analysis for Various Reinforcements of Wall-thinned Pipe

감육 배관의 다양한 보강 형태에 따른 이론적 등가 강성 검증

  • 장제훈 (고려대학교 기계공학부) ;
  • 김지수 (고려대학교 기계공학부) ;
  • 김윤재 (고려대학교 기계공학부)
  • Received : 2021.11.15
  • Accepted : 2022.04.11
  • Published : 2022.06.30
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Abstract

When wall-thinning in a pipe occurs during operation of nuclear power plant, reinforcement of the pipe needs to be performed. Accordingly, the structural response of the piping system due to introduction of the reinforcement may be re-evaluated. For elastic structural analysis of the piping system with the reinforced pipe using finite element (FE) analysis, the stiffness of the reinforced pipe is needed. In this study, the stiffness matrix of wall-thinned pipe with pad reinforcement or composite reinforcement is analytically derived. The validity of the proposed equations is checked by comparing with systematic finite element (FE) analysis results.

Keywords

Acknowledgement

이 논문은 2020년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구임(No.20206510100030, 가동원전2,3등급 대구경 배관 보수기술 개발)

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