基于流固耦合的T型管振动特性分析

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (22) : 117-123.

论文

基于流固耦合的T型管振动特性分析

赵江 1，2 ，俞建峰 1，2，楼琦1，2

作者信息 +

Modal analysis of T-shaped pipes based on a fluid-solid interaction model

ZHAO Jiang1,2，YU Jianfeng1,2，LOU Qi1,2

Author information +

文章历史 +

摘要

针对由流体引发的T型管振动问题，采用基于双向流固耦合的模态分析方法，对流体作用下的T型管模态进行分析；在双向流固耦合基础上分析流体压强，流体速度和流体密度对管道固有频率的影响；通过分析管道在流体作用下的应力和变形情况，对T型管振动剧烈的结合部位进行谐响应分析。研究表明：基于双向流固耦合的模态分析可以较确切地反映内部流体作用下的管道模态；在各因素中，流体压强对管道固有频率影响是最大的；当激励频率为第二阶(800Hz)和第八阶(1060Hz)固有频率时，管道的振动响应分别达到峰值。

Abstract

The vibration of a T-shaped pipe caused by fluid flow was investigated. The natural frequency of the T-shaped pipe under the action of fluid was analyzed based on the two-way fluid-solid coupling. The effects of fluid pressure, fluid velocity and fluid density on the modality of the pipeline were studied in consideration of the two-way fluid-solid coupling. The stress and deformation of the pipeline under the effect of fluid were analysed, and the vibration harmonic responses of the T-shaped pipe were investigated. The results show that the modal analysis based on the two-way fluid-structure coupling can accurately reflect the modality of the pipeline under the action of internal fluid; the fluid pressure has the greatest influence on the natural frequency of the pipeline; the vibration response of the pipeline reaches peaks at the excitation frequency of 800 Hz and 1 060 Hz.

导出引用

赵江 1，2,俞建峰 1，2，楼琦1，2. 基于流固耦合的T型管振动特性分析[J]. 振动与冲击, 2019, 38(22): 117-123

ZHAO Jiang1,2，YU Jianfeng1,2，LOU Qi1,2. Modal analysis of T-shaped pipes based on a fluid-solid interaction model[J]. Journal of Vibration and Shock, 2019, 38(22): 117-123

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