沟槽磨损对飞机轮胎滑水影响仿真分析  

Simulation analysis on influence of groove abrasion on aircraft hydroplaning

作　　者：蔡靖[1] 许诤 CAI Jing;XU Zheng(College of Airport Engineering,CAUC,Tianjin 300300,China)

机构地区：[1]中国民航大学机场学院,天津300300

出　　处：《中国民航大学学报》2020年第2期38-43,共6页Journal of Civil Aviation University of China

基　　金：国家自然科学基金项目(51508559)。

摘　　要：飞机轮胎的磨损状态对其滑水行为有着重要影响,进而影响飞行安全。针对该问题,利用有限元软件建立不同磨损程度的轮胎模型,并利用CEL算法建立轮胎—水膜—道面相互作用的模型,分析轮胎磨损程度对三者相互作用的影响,计算得到不同磨损程度的轮胎在不同水膜厚度道面上的临界滑水速度。结果表明:沟槽磨损程度大于50%,轮胎排水能力明显下降,同时前缘动水压强分布发生变化;随着轮胎磨损程度的增加,其临界滑水速度不断降低,当沟槽深度磨损至小于当前道面水膜厚度,轮胎临界滑水速度下降16%~21%,更易发生滑水现象,从而影响飞机降落过程中的操控性能。据此,建议航空公司将轮胎更换标准修正为“磨损率达到50%时进行更换”。The abrasion condition of aircraft tires has big influence on its hydroplaning behavior,and then affects flight safety.Aiming at this problem,the tire models with different abrasion degrees are established by using finite element software,and CEL algorithm is used to establish tire—waterfilm—pavement interaction model.The influence of tire abrasion degree on the three factors’interaction is analyzed,and the critical hydroplaning speed of tires with different abrasion degrees on pavement with various waterfilm thickness is calculated.Results show that when the groove abrasion degree is more than 50%,the drainage capacity decreases obviously,and the distribution of hydrodynamic pressure on the front edge changes.With the increase of tire abrasion degree,the critical hydroplaning speed will decrease continuously.When the groove depth gets abraded to less than the current waterfilm thickness,the critical hydroplaning speed of the tire decreases by 16%~20%,hydroplaning is more likely to occur,which will affect the maneuverability of aircraft during landing.Accordingly,airliners are suggested to revise the tire replacement standard to‘replace the tire when the abrasion rate reaches 50%’.

关 键 词：沟槽磨损 滑水现象 CEL算法 临界滑水速度 

分 类 号：V226.8[航空宇航科学与技术—飞行器设计]