261 環状すきま流を受ける軸対称弾性梁のアクティブ制振手法の基礎検討(平行流による流体関連振動のメカニズムと計測制御,OS-22 流体関連振動・音響メカニズムと計測制御,総合テーマ「伝統を,未来へ!」)

概要

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Flow-induced vibration occurs in the structures subjected to annular flow such as elastic beam in the narrow passage. Once the vibration occurs, the vibration becomes larger. In this paper, active control of the vibration of the axisymmetric elastic beam subjected to annular flow is investigated. The fluid-structure coupled equations based on the Euler-Bernoulli type partial differential equation and Navier-Stokes equation are derived including control terms. In this paper, two kinds of control methods are proposed. Applying the optimal control law to the coupled system, the unstable behavior is stabilized. Simulation studies are performed to investigate the efficiency of the proposed control method and the effect of the position of actuator on control performance.
一般社団法人日本機械学会の論文
2010-09-14