基于Workbench的流固耦合作用下U型管振动特性分析  

Analysis of Vibration Characteristics of U-Tube Under Fluid-Structure Interaction Based on Workbench

作　　者：包日东[1] 王浩南 BAO Ridong;WANG Haonan(Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2024年第3期254-262,共9页Journal of Shenyang University of Chemical Technology

基　　金：国家自然科学基金资助项目(51275315)。

摘　　要：基于流固耦合理论,通过Workbench平台对U型管的振动特性进行了分析.随着流体流速的增加,U型管的固有频率会小幅度提高,最大等效应力与总应变显著增加;随着压强的增加,U型管的固有频率显著提高,最大等效应力与总应变明显提高;随着管壁厚度的增加,U型管的第一阶固有频率先增大后逐渐减小,此时管道质量影响占优,第二~六阶固有频率升高,此时管道强度影响占优,最大等效应力与最大总变形均显著减小.通过谐响应分析了U型管的应力、应变在不同激励下的共振,发现在880 Hz时,应力、应变达到最大值.Based on the fluid structure coupling theory,the vibration characteristics of U-tube are analyzed by workbench platform.Based on the analysis results,with the increase of fluid velocity,the natural frequency of U-tube will increase slightly,and the maximum equivalent stress and total strain will increase significantly.With the increase of pressure,the natural frequency of the U-tube increase significantly,and the maximum equivalent stress and the total strain will significantly increase.With the increase of wall thickness,the first natural frequency of U-tube decreases gradually,and the mass effect is dominant.The second-fifth natural frequency increases,and the strength effect is dominant.The maximum equivalent stress and maximum total deformation are significantly reduced.The resonance of stress and strain under different excitation is analyzed by harmonic response.It is found that the maximum stress and strain reached at 880 Hz.

关 键 词：流固耦合 U型管 模态分析 WORKBENCH 

分 类 号：U171[交通运输工程]