すきま流励起振動に関する研究 : 第4報, 並進・回転2自由度連成系における流体力とそのモーメント

概要

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An analytical study is presented on leakage-flow-induced vibrations in a one-dimensional, narrow, tapered passage. The fluid-dynamic forces and the moments acting on the walls of the passage when one of them is vibrating in coupled translational and rotational modes are obtained, and fluid-dynamic mass matrices, damping matrices and stiffness matrices are determined. The amount of work done on the wall by fluid forces is also calculated as a function of the components of fluid-dynamic matrices for the purpose of examining the mechanism of flutter generated from the flow through a narrow passage in the case of two degree-of-freedom system. It is found that not only single-degree-of-freedom translational or rotational flutter, but also coupled two-degree-of-freedom translational-ratational flutter may occur.
社団法人日本機械学会の論文
1989-03-25