考虑铰接间隙区间不确定性的飞机舱门锁机构可靠性分析  

Reliability Analysis of Aircraft Door Lock Mechanism with Interval Joint Clearance Uncertainties

作　　者：常琦 周长聪[1] 刘付超 张浩 岳珠峰[1] CHANG Qi;ZHOU Changcong;LIU Fuchao;ZHANG Hao;YUE Zhufeng(School of Mechanics and Civil Architecture,Northwestern Polytechnical University,Xi’an 710129;China Aviation Industry General Aircraft Co.,Ltd.,Zhuhai 519030)

机构地区：[1]西北工业大学力学与土木建筑学院,西安710129 [2]中航通飞研究院有限公司,珠海519030

出　　处：《机械工程学报》2023年第8期264-272,共9页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51975476);西北工业大学博士论文创新基金(CX2022012)资助项目。

摘　　要：针对考虑铰接间隙的飞机舱门锁机构功能失效问题,研究实用的基于区间模型的可靠性及灵敏度分析方法。采用区间模型表征舱门锁机构各旋转铰接处由于设计、制造、安装、磨损等因素造成的间隙,在Adams和Matlab环境下建立了舱门锁机构可靠性联合仿真模型。引入了区间变量情况下的非概率可靠性指标,并提出用于评估区间变量对机构可靠性影响程度的灵敏度指标。将所提出的非概率可靠性指标和灵敏度分析方法应用于舱门锁机构研究,结果表明,所建立分析方法对工程样本数据要求低、假设少、计算效率高,能够有效评估舱门锁机构可靠性;同时灵敏度分析可以识别出影响舱门锁机构功能可靠性的关键位置,从而为舱门锁机构的改进设计提供指导。For the functional failure problem of aircraft door lock mechanism with joint clearances,a practical reliability and sensitivity method is studied based on interval model.The clearances caused by design,manufacture,installation,wear and other factors are characterized by interval model,and a co-simulation model for the reliability analysis of the door lock mechanism is established in ADAMS and Matlab software.The interval variable based non-probabilistic reliability index is introduced,and the sensitivity index for evaluating the influence of interval variables on mechanism reliability is proposed.The proposed non-probabilistic reliability and sensitivity method is applied to the study of aircraft door lock mechanism.The results show that the proposed method has lower requirements for engineering sample data,fewer assumptions and higher calculation efficiency to evaluate the reliability of the lock mechanism.At the same time,the sensitivity analysis can screen out the key positions that affect the functional reliability of the lock mechanism,thus providing guidance for the optimization design of the door lock mechanism.

关 键 词：舱门锁 可靠性 灵敏度 铰接间隙 区间 

分 类 号：V223[航空宇航科学与技术—飞行器设计] V215