飞机液压系统管路密封性的多因素影响规律仿真分析

Simulation and Analysis of Multi-factor Influencing Law of Pipe Sealing in Aircraft Hydraulic System

本文针对飞机液压系统管路连接件,分析了管路连接件密封性能的多个影响因素,提出了有效密封的判定条件。建立了飞机管路连接件有限元模型,通过仿真分析研究了管路密封性能的多因素影响规律,结果表明:拧紧力矩的增加会使密封性能增强;管接头与管道接触面的摩擦系数增加,密封性能降低;轴向装配偏差对密封性影响很大,甚至会导致管路失去密封性;径向偏差和角度偏差对密封性影响较小。

Aiming at the pipe connector of aircraft hydraulic system, the factors affecting the sealing performance of the hydraulic system of aircraft were analyzed. The determination conditions of effective sealing were put forward. The finite element model of aircraft pipe connection was established. The multi-factor influence law of pipe sealing performance was studied through simulation analysis. The results show that the increase of tightening torque will enhance the sealing performance;the friction coefficient between pipe joint and pipe contact surface increases and the sealing performance decreases;the axial assembly deviation has a great influence on sealing performance, and even causes the pipeline to lose sealing performance;the radial deviation and angle deviation have little influence on sealing performance.