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유체맥동을 고려한 배관계의 진동해석

Vibration Analysis of Pipes Considering Fluid Pulsation

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

초록

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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참고문헌

  1. Jerry H. Ginsberg, 1973, 'The Dynamic Stability of a Pipe Conveying a Pulsatile Flow', International Journal of Engineering Science Vol.11, pp.1013-1024 https://doi.org/10.1016/0020-7225(73)90014-1
  2. Paidoussis, M. P. and Issid, N. T., 1976, 'Dynamic Stability of Pipes Conveying Fluid', Journal of Sound and Vibration, Vol. 33, pp. 267-294 https://doi.org/10.1016/S0022-460X(74)80002-7
  3. Paidoussis, M. P. and Sundararajan, C., 1975, 'Parametric and Combination Resonances of a Pipe Conveying Pulsating Fluid', Journal of Applied Mechanics, Vol. 42, pp. 780-784 https://doi.org/10.1115/1.3423705
  4. Paidoussis, M. P. and Issid, N. T., 1976, 'Experiments on Parametric Resonance of a Pipes Containing Pulsatile Flow', Journal of Applied Mechanics, Vol. 43, pp. 198-202 https://doi.org/10.1115/1.3423807
  5. Ariaratnam, S. T. and Sri Namachchivaya, N., 1986, 'Dynamic Stability of Pipes Conveying Pulsating Fluid', Journal of Sound and Vibration, Vol. 107, pp, 215-230 https://doi.org/10.1016/0022-460X(86)90233-6
  6. Meirovitch, L., 1970, 'Methods of Analytical Dynamics', McGraw-Hill
  7. Bolotin, V. V., 1964, 'The Dynamic Stability of Elastic Systems' , Holden Day
  8. Paidoussis, M. P., 1998, Fluid-structure Interactions; Slender Structures and Axial Flow Vol. 1