Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Vibration Characteristics of Steam Generator U-tubes with Defect

결함을 가진 증기발생기 U-튜브의 진동특성

  • 조종철 (한국원자력안전기술원 규제기술연구부) ;
  • 정명조 (한국원자력안전기술원 원자력안전연구실) ;
  • 김웅식 (한국원자력안전기술원 규제기술연구부) ;
  • 김효정 (한국원자력안전기술원 규제기술연구부) ;
  • 김태형 (한국전력기술주식회사 구조해석분야)
  • Published : 2003.05.01
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Abstract

This paper investigates the vibration characteristics of steam generator (SG) U-tubes with defect. The operating SG shell-side flow field conditions for determining the fluidelastic instability parameters such as added mass are obtained from three-dimensional SG flow calculation. Modal analyses are performed for the U-tubes either with axial or circumferential flaw with different sizes. Special emphases are on the effects of flaw orientation and size on the modal and instability characteristics of tubes, which are expressed in terms of the natural frequency, corresponding mode shape and stability ratio. Also, addressed is the effect of the internal pressure on the vibration characteristics of the tube.

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References

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Cited by

  1. Fretting-wear Characteristics of Steam Generator Helical Tubes vol.14, pp.4, 2004, https://doi.org/10.5050/KSNVN.2004.14.4.327