Flow-induced vibrations and hydroelastic instabilities of rectangular parallel-plate assemblies are studied theoretically. The extended Galerkin method is employed to solve the plate equation, while the Fourier transform technique is used to solve for the perturbation pressure from the potential flow equations. The mixed fluid-plate interaction boundary condition leads to a singular integral equation, which is solved numerically. The complex frequencies versus flow velocity and critical velocities are obtained for various plate aspect ratios and channel-height-to-plate-width ratios. The frequencies and critical velocities are found to decrease as the plate length increases and as the channel height decreases. Two types of instability are found, namely, single-mode divergence, mostly in the first mode, and coupled-mode flutter involving adjacent modes. Damping has a significant effect on post-divergence stability and coupled-mode flutter of the system. [S0094-9930(00)00403-0]
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November 2000
Technical Papers
Analysis of Hydroelastic Instabilities of Rectangular Parallel-Plate Assemblies
C. Q. Guo,
C. Q. Guo
Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montreal, Quebec H3A 2K6, Canada
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M. P. Paı¨doussis, Fellow ASME
e-mail: maryf@mecheng.mcgill.ca
M. P. Paı¨doussis, Fellow ASME
Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montreal, Quebec H3A 2K6, Canada
Search for other works by this author on:
C. Q. Guo
Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montreal, Quebec H3A 2K6, Canada
M. P. Paı¨doussis, Fellow ASME
Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montreal, Quebec H3A 2K6, Canada
e-mail: maryf@mecheng.mcgill.ca
Contributed by the Pressure Vessels and Piping Division and presented at the Pressure Vessels and Piping Conference, Boston, Massachusetts, August 1–5, 1999, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the PVP Division, November 19, 1999; revised manuscript received March 7, 2000. Associate Technical Editor: S. S. Chen.
J. Pressure Vessel Technol. Nov 2000, 122(4): 502-508 (7 pages)
Published Online: March 7, 2000
Article history
Received:
November 19, 1999
Revised:
March 7, 2000
Citation
Guo, C. Q., and Paı¨doussis, M. P. (March 7, 2000). "Analysis of Hydroelastic Instabilities of Rectangular Parallel-Plate Assemblies ." ASME. J. Pressure Vessel Technol. November 2000; 122(4): 502–508. https://doi.org/10.1115/1.1286019
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