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Stabilization of Annular Flow-Induced Vibration of Axisymmetric Elastic Beam With Piezoelectric-Type Actuators

[+] Author Affiliations
Atsuhiko Shintani, Katsuhisa Fujita

Osaka Prefecture University, Sakai, Osaka, Japan

Paper No. PVP2005-71365, pp. 509-516; 8 pages
doi:10.1115/PVP2005-71365
From:
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 4: Fluid Structure Interaction
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4189-8 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME

abstract

Structures such as an elastic beam in an annular flow begin to vibrate due to the annular flow. Furthermore, the flow-induced vibration becomes larger. In this paper, the stabilization of an axisymmetric elastic beam subjected to an annular flow by acting the control input on the fluid-structure coupled system is investigated. The coupled equation, based on the Euler-Bernoulli type of partial differential equation and the Navier Stokes equation, is derived with control terms. In this paper, a piezoelectric actuator is used to control the coupled system. By applying the optimal control law to the coupled system, the unstable behavior is stabilized. Numerical studies are performed to investigate the efficiency of the proposed control method and the effect of the position of the actuator on the control performance.

Copyright © 2005 by ASME

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