軸方向すきま流を受ける軸対称弾性はりの流体励起振動の安定性解析(機械力学,計測,自動制御)

概要

論文の詳細を見る
The evaluation methodologies for the flow-induced vibration instability of a long flexible beam due to the axial leakage-flow are reported. In the previous papers, the axisymmetric bodies are regarded as a rigid body not as a continuous body. In this paper we deal with the body as a continuous flexible beam. The equations of motion for the fluid and the structure are coupled analytically and the added mass, added damping and added stiffness are derived by considering the unsteady pressure acting on the beam. The relation between the axial velocity and the unstable phenomena is clarified. Concerning the critical flow velocity, the root locus is shown. We compare our results with the experimental results which one of the authors reported before. As a result, the design criteria for the axial leakage flow are discussed.
社団法人日本機械学会の論文
2002-10-25