利用ABAQUS软件进行航空机轮刹车热分析  

Using ABAQUS for Aircraft Wheel Brake Thermal Analysis

作　　者：何永乐 毕燕洪 张艺 

机构地区：[1]空军驻兴平军事代表室,陕西兴平713106 [2]一航制动科技有限公司,陕西西安710065

出　　处：《飞机设计》2008年第3期62-65,共4页Aircraft Design

摘　　要：飞机着陆过程中的动能主要被刹车机轮吸收,从而导致机轮温度升高。使用C/C复合材料热库后,这种情况更加明显。过高的温度对机轮及相关件的强度和工作性能将产生严重损害,容易造成刹车起火、爆胎,甚至引起灾难性事故。热分析的目的在于优化设计,为减热防热提供理论指导。传统的热分析手段仅能完成对体容温度的评估,不能定量给出机轮零部件的温度历程,成为机轮设计的薄弱环节。利用ABAQUS软件,可方便地完成刹车机轮的热分析。结果表明,热量施加方式对计算结果影响很小,而薄膜系数选取有很大影响。在所给的条件下,刹车后大约13 s,刹车盘局部达到最高温度约为983℃。计算结果与实测温度曲线变化趋势基本一致。A large amount of aircraft kinetic energy is absorbed by braked wheels during landing bra- king operations and hence the wheels temperature rises, particularly in the case of applying C/C composite sink. Excessive temperature can seriously degrade aircraft wheels operation functions and safety and even lead to a catastrophic accident. The purpose of thermal analysis is for optimizing wheel designs and providing anti-thermal or reducing hot effect ways. Traditional thermal analyses can not provide temperature histories of wheels braked and only give approximately bulk temperature of wheel elements（brake discs） and it becomes an aircraft wheel design weakness. Thermal analyses of performing aircraft wheel brake are easy by use of the ABAQUS. And calculation results show that the loading thermal mode has little effect on analysis results, but the film coefficient has much effect. In the given condition the brake disc partially reaches maximal temperature about 983℃ at approximately 13 s after braking. The temperature changing tendency simulated conforms to the actual test results.

关 键 词：航空机轮 刹车 热分析 温度场 

分 类 号：V227[航空宇航科学与技术—飞行器设计]