摘要
针对某飞机作动器密封问题,利用ANSYS软件建立了温度-油压联合作用下的O形圈密封二维轴对称仿真模型,系统研究了有无挡圈、工作温度和O形圈直径对接触压力的影响。结果表明,引入挡圈会增加O形圈的接触压力,避免O形圈出现“挤出”现象;极限油压27MPa下,-55℃工作环境中O形圈接触压力比常温情况低1.9MPa;随着O形圈直径尺寸的增加,其与盖板之间的接触压力也随之增大。O形圈直径小于1.50 mm时,其在-55℃温度下存在泄漏风险。研究结果可为O形圈的密封设计提供理论指导。
To address the sealing issue of an aircraft actuator,a two-dimensional axisymmetric simulation model of O-ring sealing under the combined effects of temperature and oil pressure was established using ANSYS software.The study systematically investigated the influence of backup ring presence,operating temperature,and O-ring diameter on contact pressure.The introduction of a backup ring increases the contact pressure of the O-ring,thereby preventing“extrusion”failure.Under the ultimate oil pressure of 27 MPa,the contact pressure of the O-ring at-55℃operating environment is 1.9 MPa lower than that at room temperature.As the O-ring diameter increases,the contact pressure between the O-ring and the cover plate also rises.When the O-ring diameter is less than 1.50 mm,there exists a leakage risk at-55℃.The research findings provide theoretical guidance for the sealing design of O-rings.
作者
张航
胡青山
敬烨
元振毅
孔令飞
ZHANG Hang;HU Qingshan;JING Ye;YUAN Zhenyi;KONG Lingfei(AVIC Airborne Systems Co.,Ltd.,Shanghai 200241,China;Xi’an E-fly Avionics Science&Technology Co.,Ltd,Xi’an 710065,China;School of Mechanical and Instrument Engineering,Xi’an University of Technology,Xi’an 710089,China)
出处
《重型机械》
2025年第4期99-104,共6页
Heavy Machinery
基金
工信部2023年高端数控机床及关键功能部件项目(2023ZY01037)
国家科技重大专项(2024ZD0708801)。
关键词
密封性
O形圈
有限元仿真
超弹性
温压联合作用
sealing performance
O-ring
finite element method
hyperelastic
combined effects of temperature and pressure
