Axial Leakage Flow-induced Vibration Of A Thin
Cylindrical Shell
Author(s)
K. Fujita, A. Shintani and M. Ono
Abstract
The stability of a thin cylindrical shell subjected to axial leakage flow is
presented. The analytical model of a cylindrical shell is composed of the
inner thin shell and the outer rigid one. We derived the added mass, added
damping and added stiffness due to the unsteady fluid forces acting on the
thin cylindrical shell subjected to axial leakage flow. The coupled equations
between a shell and a fluid in narrow clearance are obtained by using the
Donnell's shell theory and the Navier-Stokes equation. As the vibrational
characteristics of a thin cylindrical shell, the axisymmetric (ring-mode) vi-
bration, the lateral (beam-like) vibration and the circumferential (ovaling)
vibration are classified. The effect of the axial leakage flow on the unstable
phenomena of a thin cylindrical sh
Keywords
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