流固耦合管道固有频率及参数灵敏度分析OA北大核心CSCDCSTPCD
Analysis of Natural Frequency and Parameter Sensitivity for a Fluid-structure Interaction Pipe
根据哈密顿原理推导出了输流管道的横向振动方程,采用伽辽金法对该方程进行离散获得了管道系统的频率方程,并求出了前4阶临界流速、临界压强以及临界简支长度的计算公式。分析了流速、液体压强和简支长度对固有频率以及压强、简支长度对临界流速的影响。最后进行了固有频率对流速、液体压强等参数的灵敏度分析。研究结果表明：1）与简支长度对固有频率的影响来比,流速、液体压强对固有频率的影响要小;2）固有频率对流速的1阶灵敏度要高于固有频率对液体压强的1阶灵敏度。
In this paper,the transverse vibration equation of a pipe conveying fluid was deduced by the Hamilton′s principle.The frequency equation was obtained by Galerkin Method,and expressions of the first four critical flow velocity,pressure and length of simple support were given out.Then,influences of flow velocity,pressure,length of simple support on natural frequencies and flow velocity,pressure on the critical flow velocity were analyzed.Finally,the sens…查看全部>>
刘延安
西北工业大学,西安710072
资源环境
流固耦合灵敏度固有频率临界流速
fluid-structure interactionsensitivitynatural frequencycritical flow velocity
《机械科学与技术》 2012 (3)
498-501,506,5
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