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

  • 제17권10호
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  • Pages.1002-1009
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  • 2007
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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크랙을 가진 유체유동 파이프의 안정성에 미치는 부가질량의 영향

Effects of Attached Mass on Stability of Pipe Conveying Fluid with Crack

  • 손인수 (동의대학교 기계공학과) ;
  • 조정래 (한국폴리텍VI대학 달성캠퍼스 자동차과) ;
  • 윤한익 (동의대학교 대학원 기계공학과)
  • 발행 : 2007.10.20
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초록

In this paper, the dynamic stability of a cracked simply supported pipe conveying fluid with an attached mass is investigated. Also, the effect of attached mass on the dynamic stability of a simply supported pipe conveying fluid is presented for the different positions and depth of the crack. Based on the Euler-Bernouli beam theory, the equation of motion can be constructed by the energy expressions using extended Hamilton's principle. The crack section is represented by a local flexibility matrix connecting two undamaged pipe segments. The crack is assumed to be in the first mode of a fracture and to be always opened during the vibrations. Finally, the critical flow velocities and stability maps of the pipe conveying fluid are obtained by changing the attached mass and crack severity.

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참고문헌

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