不同拧紧力矩下扩口式航空液压管接头密封特性研究  

Research on Sealing Characteristics of Flared Aviation Hydraulic Connector Under Different Tightening Torque

作　　者：田威 孙伶俐 徐小虎 TIAN Wei;SUN Lingli;XU Xiaohu(Aviation Maintenance NCO School,Air Force Engineering University,Xinyang,Henan 464000)

机构地区：[1]空军工程大学航空机务士官学校,河南信阳464000

出　　处：《液压与气动》2025年第4期92-100,共9页Chinese Hydraulics & Pneumatics

基　　金：2023年度装备综合研究项目(KJ2022C009141)。

摘　　要：以ANSYS Workbench为平台,构建管径为10 mm的扩口式航空液压管接头三维有限元模型,在不同拧紧力矩状态下,对其密封性能的影响机制进行系统性研究。通过计算仿真揭示了拧紧力矩与密封面宽度、平均接触应力分布及最大接触应力的关联规律,通过耐压试验和着色试验验证仿真结果的有效性。结果表明,37~40 N·m为最优装配力矩,能够满足液压系统工作压力和密封性能要求。该方法可为航空液压系统管路高精度装配提供理论指导与技术支撑。Using ANSYS Workbench as the platform,a three-dimensional finite element model of a flared aviation hydraulic connector with a pipe diameter of 10 mm is established to systematically study the influence mechanism of sealing performance under different tightening torques.The relationship between tightening torque and sealing surface width,average contact stress distribution and maximum contact stress is revealed through calculation and simulation.The validity of the simulation results are verified through pressure test and coloring test.The results show that 37~40 N·m is the optimal assembly torque,which meets the working pressure and sealing performance requirements of the hydraulic system.The methods proposed in this study provide theoretical guidance and technical support for the high-precision assembly of aviation hydraulic system pipeline.

关 键 词：航空液压管接头 有限元 拧紧力矩 密封面宽度 接触应力 

分 类 号：TH137[机械工程—机械制造及自动化] V245.1[航空宇航科学与技术—飞行器设计]