A114 安定化有限要素法の連続体構造物の空力弾性問題への適用

概要

論文の詳細を見る
When continuum structures are deformed largely by unsteady fluid force, there is a possibility for the onset of unstable oscillation with various kinds of modes. In this case, modal component of the fluid force is changed by its amount of deformation, so their behavior becomes complex and the oscillation of higher mode cannot be necessarily neglected. Ovalling oscillation is the one kind of the same problem. We analyze ovalling oscillation of thin circular cylindrical shells by using stabilized finite element method, and appear the aeroelastic characterictics. So far, vortex shedding and self-exited force have been expected as the cause of the ovalling ocsillation. We consider the relation between the fluid force and the structure, and investigate the mechanism of the oscillation.
日本流体力学会の論文
2000-07-25