民机液压管路膨胀环结构参数影响分析  

Influences of Structural Parameters of Expansion Ring in Hydraulic Pipeline of Civil Aircraft

作　　者：郭长虹[1] 史康俊 权凌霄[1] 蒋红岩[2] 崔超 GUO Chang-hong;SHI Kang-jun;QUAN Ling-xiao;JIANG Hong-yan;CUI Chao(School of Mechanical Engineering, Yanshan University, Qinhuangdao, Hebei 066004;Nanjing Research Center of Electromechanical and Hydraulic Engineering, Nanjing, Jiangsu 211153)

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]南京机电液压工程研究中心,江苏南京211153

出　　处：《液压与气动》2020年第5期14-21,共8页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金青年项目(51505410)。

摘　　要：以含有膨胀环的民机液压管路为研究对象,通过传递矩阵法建立其动力学数学模型,并在ABAQUS有限元仿真软件中进行静力学和动力学分析,研究当液压管路总长度一定时膨胀环折弯角度、弯曲半径、跨度和高度对管路最大应力和固有频率的影响规律。最后通过理论计算、仿真分析和实验对管路静力分析方法和动力学数学模型进行验证。结果表明:膨胀环静力学分析方法与动力学数学模型准确度较高;管路最大应力随膨胀环折弯角度和跨度增加而变大,随着弯曲半径增加而减小,随高度增加先减小后变大;管路固有频率随膨胀环高度增加而降低,与其他结构参数均呈正相关关系。Taking the hydraulic pipeline of civil aircraft with expansion rings as the research object,the dynamic mathematical model is established using transfer matrix method.And the static and dynamic analysis is carried out in ABAQU finite element simulation software.The influence of bending angle,bending radius,span and height of expansion rings on the maximum stress and natural frequency of pipeline is investigated when the total length of hydraulic pipeline is fixed.Finally,the static analysis method and dynamic mathematical model of pipeline are verified by theoretical calculation,simulation analysis and experiment.The results show that the static analysis method and dynamic mathematical model of expansion ring are accurate;the maximum stress of the pipeline increases with the bending angle and span of expansion ring,decreases with the increase of bending radius,and decreases in the beginning and then increases as the height increases.The natural frequency of the pipeline decreases as the height of expansion ring increases,and positively correlated with other structural parameters.

关 键 词：民机液压管路 膨胀环 结构参数 静力学特性 动力学特性 

分 类 号：TH137[机械工程—机械制造及自动化] TH114