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 Analysis of Pipes Considering Fluid Pulsation

유체맥동을 고려한 배관계의 진동해석

  • 서영수 (국방과학연구소 제2체계개발본부) ;
  • 정석현 (현대중공업 선박해양연구소) ;
  • 이성현 (부산대학교 대학원 기계공학부) ;
  • 홍진숙 (부산대학교 기계공학부 BK 사업단) ;
  • 정의봉 (부산대학교 기계공학부)
  • Published : 2006.10.20
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Abstract

In this paper, a new method for the stability analysis of a pipe conveying fluid which pulsates periodically is presented. The finite element model is formulated liking into consideration of the effects of the fluid pulsating in a pipe. The damping and stiffness matrices in the finite element equation vary with time due to pulsating fluid. Coupled effects of several harmonic components in the velocity of fluid to a pipe is discussed. A new unstable region appears which will not appear in the stability analysis of single pulsating frequency. A method to directly estimate the forced response of pipe is also discussed. The results presented in this paper are verified by the time domain analysis.

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References

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