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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.A: Fluid-Structure Interaction >ANNULAR AXIAL FLOW-INDUCED VIBRATION OF CYLINDRICAL SHELLS BY FLUEGGES SHELL THEORY
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ANNULAR AXIAL FLOW-INDUCED VIBRATION OF CYLINDRICAL SHELLS BY FLUEGGES SHELL THEORY

机译：氟壳理论对圆柱壳的轴向轴向流动振动

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摘要

The unstable phenomena of thin cylindrical shells subjected to annular axial flow are investigated. In this paper, the analytical model is composed of an elastic axisymmetric shell and a rigid one which are arranged co-axially. Considering the fluid structure interaction between shells and fluid flowing through an annular narrow passage, the coupled equation of motion is derived using Fluegge's shell theory and Navier-Stokes equations. The unstable phenomena of thin cylindrical shells are clarified by using the root locus based on the complex eigenvalue analysis. The numerical parameter studies on the shells with a freely supported end and a rigid one , and with both simply supported ends, are performed taking the dimensins of shells, the characteristics of flowing fluid so on as parameters. The influence of these parameters on the threshold of instability of the coupled vibration between thin cylindrical shells and annular axial flowing fluid are investigated and discussed.
机译：研究了圆柱薄壳在环形轴向流动下的不稳定现象。本文的分析模型是由一个同轴的弹性轴对称壳和一个刚性的轴壳组成。考虑到壳与流经环形窄通道的流体之间的流体结构相互作用，使用Fluegge壳理论和Navier-Stokes方程推导了耦合运动方程。在复杂特征值分析的基础上，通过使用根轨迹来阐明薄圆柱壳的不稳定现象。以具有自由支撑的端部和具有刚性的端部并且具有两个简单支撑端部的壳体为参数，以壳体的二聚体，流动流体的特性等为参数进行了数值研究。研究和讨论了这些参数对薄圆柱壳与环形轴向流动流体耦合振动的不稳定性阈值的影响。

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