民机损伤液压软管性能监控及更换标准研究  

Research on the performance monitoring and replacement standard for damaged hydraulic hose of civil aircraft

作　　者：贾宝惠[1] 马语蔚 王玉鑫[1] 姚飞 肖海建 JIA Baohui;MA Yuwei;WANG Yuxin;YAO Fei;XIAO Haijian(College of Transportation Science and Engineering,CAUC,Tianjin 300300,China;College of Aeronautical Engineering,CAUC,Tianjin 300300,China;College of Safety Science and Engineering,CAUC,Tianjin 300300,China)

机构地区：[1]中国民航大学交通科学与工程学院,天津300300 [2]中国民航大学航空工程学院,天津300300 [3]中国民航大学安全科学与工程学院,天津300300

出　　处：《中国民航大学学报》2025年第1期67-74,共8页Journal of Civil Aviation University of China

基　　金：国家自然科学基金项目(U2033209)。

摘　　要：本文采用建立理论模型、实验验证以及仿真分析的方法,分析了民机液压软管在含磨损缺陷时的力学性能变化规律以及失效情况,得出了软管需要重点监控的损伤状态以及建议更换的磨损缺陷深度。基于流固耦合法,在ANSYS WORKBENCH中进行复合管路有限元仿真分析,探究了在不同流体压力下,磨损缺陷深度、轴向长度对力学性能的影响,给出了不同压力下管路最大总变形和最大等效应变的预测函数关系式,并建立了损伤管路复合强度模型。由该模型可知,管路在内壁未完全破损前不失效,在磨损深度与壁厚比为0.4时,其力学性能显著下降,此时需重点监控或更换。Using the approach of theoretical model establishment,experimental verification and simulation analysis,the me-chanical performance change rule and failure situation of the hydraulic hose of civil aircraft when containing wear defects are analyzed in this paper.The damage status of the hose that needs to be key monitored and the wear defect depth recommend for replacement are obtained.Based on the flow-solid coupling method,a finite element simula-tion analysis of composite pipeline was conducted in ANSYS WORKBENCH to explore the influence of wear defect depth and axial length on mechanical performance under different fluid pressures,the prediction function relation-ship of the maximum total deformation and maximum equivalent strain of pipelines under different pressures are given,and a composite strength model of damaged pipelines is established.According to the established model,the pipeline does not fail before the inner wall is completely damaged,and when the wear depth and wall thickness ra-tio is O.4,its mechanical performance decrease significantly,when it needs to be key monitored or replaced.

关 键 词：液压软管 复合强度 磨损缺陷 单一参数 性能监控 剩余强度 

分 类 号：V267[航空宇航科学与技术—航空宇航制造工程]