Journal of the Computational Structural Engineering Institute of Korea (한국전산구조공학회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Plastic Loads of Mitred Bends under Internal Pressure and Bending Moment

굽힘 하중과 내압이 가해지는 미터밴드의 소성하중

  • 민성환 (고려대학교 대학원 기계공학과) ;
  • 김윤재 (고려대학교 기계공학과) ;
  • 전준영 (고려대학교 대학원 기계공학과) ;
  • 이국희 (고려대학교 대학원 기계공학과)
  • Received : 2009.09.28
  • Accepted : 2009.12.08
  • Published : 2009.12.30
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Abstract

Based on three-dimensional(3-D) finite element limit analyses, this paper provides limit and TES (Twice-Plastic Load) loads for mitred pipe bends under bending and pressure. The plastic limit loads are determined from FE limit analyses based on elastic-perfectly-plastic materials using the small and large geometry change option. A wide range of parameters related to the mitred bend geometry is considered. Based on the finite element results, closed-form approximations of plastic limit and TES plastic load solutions for mitred pipe bends under bending are proposed.

본 논문에서는 굽힘과 내압이 가해질 때 미터밴드의 한계하중을 3차원 유한요소해석을 이용하여 연구하였다. 재료는 탄성-완전 소성재료로 가정하였고, 기하학적 선형과 비선형 효과를 고려하여 소성 한계하중을 결정하였다. 본 연구를 위한 해석에서는 다양한 범위의 형상 변수가 고려되었다. 유한요소해석 결과를 바탕으로 굽힘에 관한 보간식을 제시하였다.

Keywords

References

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