任意分支管路流固耦合振动计算方法

李帅军1,李华峰1,王小峰1,柳贡民2

振动与冲击 ›› 2018, Vol. 37 ›› Issue (7) : 52-55.

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PDF(659 KB)
振动与冲击 ›› 2018, Vol. 37 ›› Issue (7) : 52-55.
论文

任意分支管路流固耦合振动计算方法

  • 李帅军1,李华峰1,王小峰1,柳贡民2
作者信息 +

Vibration calculation method of multi-branched pipes with fluid-structure interaction

  • LI Shuaijun1, LI Huafeng1, WANG Xiaofeng1, LIU Gongmin2
Author information +
文章历史 +

摘要

基于分支结合部的力平衡及流体连续条件,建立了分支管道的传递矩阵通用表达式;基于吸收传递矩阵的思想,推导了含有任意分支的输流管道计算方法,并通过实验验证了该方法的正确性。通过多种分支角度和位置的计算分析,研究了分支管件对管道流固耦合振动特性的影响,发现分支管角度及位置的变化对管内流体压力波的影响大于其对管道结构振动的影响,分支角度的变化对管道结构振动和管内流体压力脉动的影响具有一定的选择性,而分支位置的变化对管道的影响较为复杂。

Abstract

Based on moment and force equilibriums and fluid continuity conditions at a pipe branches’ junction, the general formula for dynamic transfer matrix of branched pipes was established. The transfer matrix method in frequency domain for calculating dynamic responses of fluid-filled multi-branched pipes was proposed. The correctness of the proposed model and algorithm was validated using test data of cross-shaped pipes with various boundary conditions. Then, forced vibrations of branched pipes were analyzed considering effects of different branch angles and positions. The results showed that compared with pipeline structural vibration, fluid pressure fluctuation is more easily influenced by variation of branch angles and positions; the effects of branch angle changes on pipeline structural vibration and fluid pressure fluctuation have a certain selectivity, while the effects of branch position changes on pipeline structural vibration are more complex.


关键词

流固耦合 / 多分支管道 / 振动特性 / 传递矩阵方法 / 实验

Key words

fluid-structure interaction / multi-branched pipes / vibration characteristics / transfer matrix method / test

引用本文

导出引用
李帅军1,李华峰1,王小峰1,柳贡民2. 任意分支管路流固耦合振动计算方法[J]. 振动与冲击, 2018, 37(7): 52-55
LI Shuaijun1, LI Huafeng1, WANG Xiaofeng1, LIU Gongmin2. Vibration calculation method of multi-branched pipes with fluid-structure interaction[J]. Journal of Vibration and Shock, 2018, 37(7): 52-55

参考文献

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