Dynamics & Design Conference
Online ISSN : 2424-2993
セッションID: 307
会議情報
307 狭い流路内を移動する連結構造体の安定性に対する構造体数および流れの影響
外山 真悟藤田 勝久新谷 篤彦
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会議録・要旨集 フリー

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Vibrational behavior and unstable phenomena of multi-connected bodies supported by damper-spring elements moving in a narrow flow passage are reported. These vibrational phenomena have been often observed in high-speed trains running in tunnels, cleaning robots going through pipings, medical machines in human blood vessels and core internal structures in nuclear reactor vessels. The fluid forces acting on the multi-connected rigid bodies are obtained analytically on the basis of the Navier-Stokes equations applied to a narrow flow passage. The equations of coupled motion of the multi-connected bodies and fluid are derived. Using coupled equation, a stability analysis is performed. The effect of the flow velocity and number of bodies on the coupled mode is investigated. The relation between the vibrational behavior of bodies and unsteady fluid pressure.
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© 2006 一般社団法人 日本機械学会
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