Influences of Fluid and Structural Parameters on Flow-Induced Vibrations of Plate-Fluid Structure

LU Li; YANG Yiren

Volume 22 Issue 3

Jun. 2009

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Abstract

References

Journal of Southwest Jiaotong University > 2009 > 22(3): 370-374.

ZHANG Xiang, XIAO Jian. Output Feedback Control for Distributed Network Control System[J]. Journal of Southwest Jiaotong University, 2007, 20(1): 29-34.

Citation:

LU Li, YANG Yiren. Influences of Fluid and Structural Parameters on Flow-Induced Vibrations of Plate-Fluid Structure[J]. Journal of Southwest Jiaotong University, 2009, 22(3): 370-374.

ZHANG Xiang, XIAO Jian. Output Feedback Control for Distributed Network Control System[J]. Journal of Southwest Jiaotong University, 2007, 20(1): 29-34.

Citation:

LU Li, YANG Yiren. Influences of Fluid and Structural Parameters on Flow-Induced Vibrations of Plate-Fluid Structure[J]. Journal of Southwest Jiaotong University, 2009, 22(3): 370-374.

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Influences of Fluid and Structural Parameters on Flow-Induced Vibrations of Plate-Fluid Structure

LU Li,
YANG Yiren

Received Date: 10 Dec 2008
Publish Date: 20 Jun 2009

Abstract

Abstract

The equations for fluid forces acting on a flat beam in a rigid water trough with axial flow were derived using the analytical equations for fluid dynamic pressure of typical plate-fluid-plate model. The natural frequencies of a hinged 4-span flat beam in air and in axial viscous fluid flow were calculated with the assumed mode method. The results show that the relative error between the calculated 1st order natural frequency and the experimental one is 1.7%,which satisfies the need of engineering application. The natural frequencies decrease with the increase of the fluid velocity,the length and width of the beam,and go down to zero when fluid velocity increases to a large value. The dynamic viscosity of fluid has little effect on natural frequencies.
- plate-fluid-plate structure,
- coupled fluid-solid vibration,
- natural frequency,
- axial viscous flow

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References

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