配气台管路系统气固耦合振动特性分析  

Vibration Characteristics Analysis of Gas-solid Coupling in Pipeline System of Gas Distribution Table

作　　者：姜续 何轩 何丽[1] 张博宇[1] JIANG Xu;HE Xuan;HE Li;ZHANG Bo-yu(Beijing Institute of Space Launch Technology, Beijing 100076)

机构地区：[1]北京航天发射技术研究所,北京100076

出　　处：《液压与气动》2021年第2期157-161,共5页Chinese Hydraulics & Pneumatics

摘　　要：针对配气台管路振动问题,采用传递矩阵法和有限元模态分析法,建立管道系统振动频率的计算模型。运用MATLAB,ANSYS和AMESim软件分析计算,得到气柱固有频率、结构固有频率及扰动频率三者之间的关系,确定配气台管路振动的原因,并提出有效的解决措施。研究表明:由于扰动频率与管路内气柱低阶固有频率相近,激发配气台管路剧烈共振,通过增加阻尼孔板和增加管路支撑,改变了管路内气柱固有频率和结构固有频率,有效的解决了配气台管路共振问题。In order to solve the vibration problem of pipeline,calculation models of the vibration frequency are established by the transfer matrix method and the finite element modal analysis method.The relationship among gas natural frequencies,structural natural frequencies and disturbance frequencies are calculated by MATLAB,ANSYS and AMESim.After the simulation analysis by software,it founds out the cause of the pipeline vibration,and puts forward some effective solutions.The results show that the violent vibration occurs in the pipeline,when the disturbance frequency is close to the gas natural frequency.The gas natural frequency and the structural natural frequency are changed by adding the damping orifice plate and adding the structural support,and the resonant problem of pipeline is effectively solved.

关 键 词：气固耦合 管路振动 固有频率 扰动频率 

分 类 号：TH138[机械工程—机械制造及自动化] TH113[机械工程—机械设计及理论]