基于失效模式的襟翼运动机构可靠性仿真分析

Reliability Simulation Analysis of a Flap Motion Mechanism Based on Failure Modes

襟翼运动机构作为飞机的典型运动机构,其可靠性的高低对飞机能否完成工作任务有直接的影响。首先,针对某型飞机襟翼运动机构,通过多体动力学仿真软件平台LMS Visual.Lab建立了刚柔耦合仿真模型,进行了多体动力学仿真计算;然后,根据襟翼运动机构的故障失效模式分析,选取主要失效模式为分析对象,并将主要影响参数进行随机化,建立了襟翼运动机构基于失效模式的可靠性仿真模型;最后,在此基础上应用蒙特卡罗方法进行了可靠性仿真分析和影响参数的灵敏度分析,得到了襟翼运动机构的可靠性水平和关键影响参数,为机械运动机构的可靠性设计提供了定量分析的手段。

As a typical motion mechanism of aircraft, the reliability of flap motion mechanism has a direct impact on whether the aircraft can complete the work task or not. Firstly, aiming at the flap motion mechanism of an aircraft, a rigid-flexible coupling simulation model is established by using the multi-body dynamics simulation software platform of LMS Visual. Lab, and the multi-body dynamics simulation calculation is carried out. Then, according to the failure mode analysis of flap motion mechanism, the main failure modes are selected as the analysis objects, and by randomizing the main influence parameters, the reliability simulation model of flap motion mechanism based on failure mode is established. Finally, on this basis, the reliability simulation and sensitivity analysis of influence parameters are carried out by Monte Carlo method. The reliability level and key influence parameters of the flap motion mechanism are obtained, which provides a quantitative analysis method for the reliability design of the mechanical motion mechanism.