Departmental Bulletin Paper 連結された剛体管曲部の面内振動

山下, 清隆  ,  Yamashita, Kiyotaka  ,  中山, 智了  ,  Nakayama, Tomoaki

Planar and non-planar vibrations of Pipes conveying fluid have been studied for a long time as the generic problems of the flow-induced vibrations. However, many of these studies are devoted to the vibrations of the straight pipes conveying fluid. In this paper, as the first step to clarify the dynamics of curved pipes conveying fluid, we study the planar vibrations of a bent part in the articulated pipes due to the pulsating fluid flow. We derive the governing equation of bent part of the articulated pipe conveying fluid consisting of three rigid pipes. From the physical estimation of the governing equation, it is clarified that the bent part of the articulated pipes are forced excited due to the pulsating fluid flow. From the experimental results, theoretical results are qualitatively verified.

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