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

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Flow-induced Vibration Time Response Analysis of Loosely Supported Multi-Span Tube using Commercial FEA Code

지지점 간극을 갖는 다점지지 유연관의 유동하중에 의한 시간응답 이력해석과 상용유한요소 해석코드의 적용

  • 이강희 (한국원자력연구원) ;
  • 강흥석 (한국원자력연구원 경수로핵연료기술부) ;
  • 신창환 (한국원자력연구원 경수로핵연료기술부)
  • Received : 2015.05.22
  • Accepted : 2015.11.11
  • Published : 2015.12.30
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Abstract

Time domain response analysis for vibro-impact nonlinear behavior of multi-span tube with loose supports was performed using commercial FEA code and user subroutine. Support geometry of multi-span tube with a finite gap is realistically modeled by analytical rigid surface. Model of hydrodynamic force is based on the Qusai-steady model which accounts for the inclined angle of relative flow velocity and time delay between flow force and resulting tube motion. During tube vibration from flow loading, impact and friction at the support location is simulated using commercial FEA code with master slave contact algorithm. Analysis results has reasonable agreement with those of references and test experience. Plan of further refinement of analysis model and future test verification is briefly introduced.

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References

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