某飞机舱盖作动筒回程冲击仿真分析OA北大核心CSTPCD

Due to the gravity of the cabin cover,when the cabin cover is suddenly closed,the lower cavity of the actuator will produce large pressure fluctuations.The pressure shock is transmitted to the pressure tank along the return path and causes the oil spill to spill out of the tank.Based on the AMESim simulation software platform,the AMESim simulation model of the gas-liquid control system of the hatch cover is built.The influence of the external load force of the actuator,the air content in oil and the oil temperature on the pressure of the pressure tank oil chamber during the closure of the cabin cover is investigated by simulation.The working principle of the gas-liquid control system of the bonnet actuator is analyzed,in the simulation model,the batch simulation shows that the air content in oil and oil temperature have little effect on the tank pressure.The real factor that causes the increase of tank pressure is the spring in the air chamber.The initial preload and spring stiffness of the spring significantly affect the pressure change of the tank.This conclusion will be used as an important basis for controlling the high pressure of the fuel tank to avoid spilling oil,which lays a theoretical foundation for the safety and stability of the system.