飞机轮胎爆破喷流模式下管路的强度计算方法  

Calculation method of pipeline strength in jet mode of aircraft tire burst

作　　者：陈凯帆 马建[1] CHEN Kaifan;MA Jian(Shanghai Aircraft Design and Research Institute,Shanghai 201210,China)

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《民用飞机设计与研究》2021年第3期21-25,共5页Civil Aircraft Design & Research

摘　　要：飞机起落架作为飞机唯一的支撑结构,是不可或缺的飞机部件,而轮胎作为飞机起落架的重要部件,在飞机起飞、降落到滑跑过程中承受着巨大的冲击力和摩擦力,从而可能导致轮胎爆破的事故发生,也可能引起轮胎的空气喷流效应,导致其空气喷流效应影响范围内的液压管路破坏。而液压管路的破坏将会导致飞机液压能源系统和与之相关联的液压设备非正常工作,进而威胁飞机的飞行安全。在进行喷流模式下的液压管路的强度计算时,由于该模式下轮胎爆破产生的喷流是瞬间的、巨大的,因此计算其喷流载荷是非常困难的。针对该模式下提出一种喷流载荷拟合方法,并将拟合后的载荷加载到管路的有限元模型中,从而计算出液压管路的强度,为轮胎爆破下喷流模式的液压管路计算提供了工程实用的方法。As the only supporting structure of the aircraft,the aircraft landing gear is an indispensable part of the aircraft.As an important part of aircraft landing gear,tires bear huge impact and friction during take-off,landing and taxiing,which may cause tire burst accidents,and then may cause the gas jet effect of tires,which will lead to the damage to the pipelines within the scope of the jet effect.The damage of the hydraulic pipeline will cause the aircraft hydraulic energy system and its associated hydraulic equipment to work abnormally,which will threaten the flight safety of the aircraft.For the strength calculation of the hydraulic pipeline in the jet flow mode,because the jet flow generated by the tire burst in this mode is huge in a moment,it is very difficult to calculate the jet flow load.This article proposes a jet load fitting method for the strength calculation of the hydraulic pipeline in the jet mode,and loads the fitted load into the finite element model of the pipeline to calculate the strength of the hydraulic pipeline.This paper provides an engineering and practical method for calculating the strength of the hydraulic pipeline in the jet mode under tire burst.

关 键 词：轮胎爆破 喷流模式 液压管路 喷流载荷 强度分析 

分 类 号：V226.8[航空宇航科学与技术—飞行器设计]