Reliability and global sensitivity analysis for an airplane slat mechanism considering wear degradation  

作　　者：Changcong ZHOU Haodong ZHAO Qi CHANG Mengyao JI Chen LI 

机构地区：[1]Institute of Aircraft Reliability Engineering,Northwestern Polytechnical University,Xi'an,710072,PR China

出　　处：《Chinese Journal of Aeronautics》2021年第1期163-170,共8页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC51975476);the Natural Science Basic Research Plan in Shaanxi Province(2020JM-135);Aerospace Science and Technology Foundation of China。

摘　　要：This paper focuses on the issue of reliability and global sensitivity analysis for an airplane slat mechanism considering the uncertainties in the wear process of mechanical components.First,the multi-body kinematic model of the slat mechanism is built in the ADAMS software.The geometrical sizes of the roller wheels after wear degradation are considered as input variables and the angle the slat should turn is considered as the output response.To accurately identify the influential roller wheels to the reliability and robustness of the slat mechanism,the failure probability based sensitivity and variance-based sensitivity indices are introduced.Comprehensive analysis of the results have shown that the reliability analysis and global sensitivity theory can help engineers find significant parts by their contributions,thus provide guidance for mechanical design and maintenance.

关 键 词：Slat mechanism Roller wheel Wear degradation RELIABILITY Sensitivity 

分 类 号：V267[航空宇航科学与技术—航空宇航制造工程] V215