Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Crack Effects on Dynamic Stability of Elastically Restrained Valve-pipe System

탄성 지지된 밸브 배관계의 안정성에 미치는 크랙의 영향

  • 허관도 (동의대학교 기계공학과) ;
  • 손인수 (동의대학교 기계공학과)
  • Received : 2011.03.20
  • Accepted : 2011.06.24
  • Published : 2011.06.30
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Abstract

The dynamic instability and natural frequency of elastically restrained pipe conveying fluid with the attached mass and crack are investigated. The pipe system with a crack is modeled by using extended Hamilton's Principle with consideration of bending energy. The crack on the pipe system is represented by a local flexibility matrix and two undamaged beam segments are connected. In this paper, the influence of attached mass, its position and crack on the dynamic stability of a elastically restrained pipe system is presented. Also, the critical flow velocity for the flutter and divergence due to the variation in the position and stiffness of supported spring is studied. Finally, the critical flow velocities and stability maps of the pipe conveying fluid with the attached mass are obtained by the changing parameters.

Keywords

Acknowledgement

Supported by : 중소기업청

References

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