長方形柱の質量比によって変化する空力不安定振動の実験的検討とその機構に関する考察

概要

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For aerodynamic unstable oscillations, the dynamic properties of structural system have a strong influence on response behaviors. Especially the mass-damping parameter, namely the Scruton number, has been usually employed in order to evaluate the occurrence of aeroelastic instabilities. However, considering that recent structures become light of weight, we cannot suppose that the dominant frequency of response is almost equal to natural frequency of structural system. Then various unstable oscillations are dependent on not only the Scruton number but also the mass ratio. In order to verify the effect of mass ratio on response as shown in the previous three-dimensional simulation of fluid flow around an oscillating rectangular cylinder, we carry out the wind tunnel tests for aeroelastic behaviors of the rectangular cylinder with D/B=2.0.
一般社団法人日本建築学会の論文
2000-03-20