液压空间管路振动特性试验研究

Experimental Study on Vibration Characteristics of Hydraulic Spatial Pipeline

流固耦合振动问题广泛存在于液压管路系统中。为了研究流体流量和卡箍约束对管路流固耦合振动特性的影响,利用ANSYS Workbench软件对管路进行了仿真,同时搭建了试验平台。在试验中,采用锤击法分析了不同流体流量和水平管路振动响应之间的规律,研究了不同卡箍材料和约束位置对空间管路系统振动特性的影响。仿真和试验结果表明:随着管路系统中流体流量的增加,管路系统的固有频率会降低,改变卡箍材料及其约束位置能有效地调节管路的固有频率,以避免发生系统共振。

Fluid-structure interaction vibration widely exists in hydraulic pipeline system.In order to study the influence of fluid flow and clamp constraint on the fluid-structure interaction vibration of pipeline,the pipeline is simulated by ANSYS Workbench software,and the experimental platform is established.The law between different flow rates and the vibration response of horizontal pipeline is analyzed by hammering method,and the influence of different clamp materials and constraint positions on the vibration characteristics of spatial pipeline system is studied.Simulation and experimental results indicate that as the fluid flow rate in the pipeline system increases,the inherent frequency of the system decreases.Changing the clamp materials and its constraint positions can effectively adjust the inherent frequency of the pipeline to avoid system resonance.