飞机刹车副温度场的瞬态有限元模型  

Transient Temperature Finite Element Model of Airplane Disk Brakes

作　　者：薛晶[1] 李玉忍[1] 田广来[1] 谭娟[1] 

机构地区：[1]西北工业大学自动化学院,西安陕西710072

出　　处：《航空学报》2010年第3期638-642,共5页Acta Aeronautica et Astronautica Sinica

摘　　要：飞机制动过程中刹车装置产生的高温可使摩擦材料发生热降解,导致摩擦系数变化,出现热衰退现象,影响飞机的安全性能,因此飞机刹车副瞬态温度场分析日益受到关注。针对飞机刹车副瞬态温度场建立了具有对流和热辐射两种边界条件的有限元计算模型,分析了边界条件对温度场的影响,并用ANSYS对其进行仿真计算。仿真计算得到的温度与刹车副经验温度基本吻合,证明了所建立的有限元计算模型合理、可行,为飞机刹车装置温度场分析、计算和研究提供理论支持。The heat energy generated during the braking of an aircraft has quite close relations with its safety;therefore,much research in this field has been performed.The article begins with a review of the existing literature on the temperature field of airplane braking,and reaches the conclusion that there is no theoretical mathematic model with the boundary conditions of heat convection and radiation.This article presents a three-dimensional model using the finite element method which takes into account both of the boundary conditions.The process of deriving the model is explained in detail.The numerical simulation results by ANSYS,which are in good agreement with the empirical data,show the importance of the boundary conditions and the validity of the model.This finding is potentially significant in optimizing the design of airplane disk brakes.

关 键 词：计算机仿真 飞机 刹车 有限元方法 温度场 

分 类 号：V226[航空宇航科学与技术—飞行器设计]