DYNAMIC STABILITY OF PIPES CONVEYING FLUID
DYNAMIC STABILITY OF PIPES CONVEYING FLUID
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DOI：
10.1016/s0022-460x(74)80002-7
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发表时间：
1974-01-01
影响因子：
4.7
通讯作者：
ISSID, NT
中科院分区：
文献类型：
--
作者：
PAIDOUSSIS, MP;ISSID, NT
本文研究了含流动流体的柔性管道的动力学和稳定性，其中流体的流速要么是完全恒定的，要么是叠加了一个小的谐波分量。在恒定流速的情况下，系统的动力学研究的一般方式，它表明，保守系统不仅受到屈曲（发散）在足够高的流速，但也振荡不稳定性（颤振）在更高的流速。对于受内耗散力作用的系统，给出了一些新的结果.在流速谐变的情况下，本文所导出的运动方程暴露了以前推导中的一个错误.稳定性，地图参数不稳定性，计算Bolotin的方法，为管道与pined或夹紧端，以及悬臂管。结果表明，对于固定-固定和铰接-铰接管，不稳定区域的范围随流速的增加而增大，而对于悬臂管，不稳定区域的范围随流速的增加而增大，而对于悬臂管，不稳定区域的范围随流速的增加而增大，而对于悬臂管，不稳定区域的范围随流速的增加而增大，而对于悬臂管，不稳定区域的范围随流速的增加而增大。在所有情况下，耗散都减小了参数不稳定区的范围，或完全消除了参数不稳定区.
This paper deals with the dynamics and stability of flexible pipes containing flowing fluid, where the flow velocity is either entirely constant, or with a small harmonic component superposed. An extensive historical review of the subject is given.In the case of constant flow velocity, the dynamics of the system is examined in a general way and it is shown that conservative systems are subject not only to buckling (divergence) at sufficiently high flow velocities, but also to oscillatory instabilities (flutter) at higher flow velocities. Also presented are some new results for cases of systems subjected to internal dissipative forces.In the case of harmonically varying flow velocity, the equation, of motion derived here exposes an error in a previous derivation. Stability, maps are presented for parametric instabilities, computed by Bolotin's method, for pipes with pined or clamped ends, as well as for cantilevered pipes. It is found that the extent of the instability regions increases with flow velocity for clamped-clamped and pinned-pinned pipes, while a more complex behaviour obtaines in the case of cantilevered pipes. In all cases, dissipation reduces the extent of, or entirely eliminates, parametric instability zones.