Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Free Vibration Analysis of Two Identical Rectangular Plates Coupled with Fluid

유체로 연성된 동일한 두 직사각 평판의 고유진동 해석

  • Jeong, Kyeong-Hoon (Korea Atomic Energy Research Institute) ;
  • Lee, Seong-Cheol (Division of Mechanical and Aerospace Systems Engineering, Chonbuk National University, Research Center of Industrial Technology) ;
  • Yoo, Gye-Hyoung (Department of Mechanical Engineering, Graduate School of Chonbuk National University)
  • 정경훈 (한국원자력연구소) ;
  • 이성철 (전북대학교 기계항공시스템공학부, 공업기술연구센터) ;
  • 유계형 (전북대학교 대학원 기계공학과)
  • Published : 2002.06.30
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Abstract

In order to investigate the vibration characteristics of fluid-structure interaction problem, we modeled two identical rectangular plates coupled with fluid. A commercial computer code, ANSYS was used to perform finite element analysis and FEM solutions were compared with the experimental results to verify the finite element model. As a result, comparison of FEM and experiment showed good agreement, and the transverse vibration modes, in-phase and out-of-Phase, were observed alternately in the fluid-coupled system. The effect of fluid gap size on the fluid-coupled natural frequency were investigated. It was shown that the mode numbers increased, the normalized natural frequencies monotonically increased. And it was also found that an increase of the fluid gap reduced the coupled natural frequencies for the in-phase modes but increased the coupled natural frequencies for the out-of phase modes, and eventually converged to the results of an infinite fluid gap.

Keywords

References

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