北京航空航天大学学报 ›› 2015, Vol. 41 ›› Issue (3): 538-544.doi: 10.13700/j.bh.1001-5965.2014.0184

• 论文 • 上一篇    下一篇

基于非稳态间断刹车的刹车盘寿命计算

周彬, 李曙林, 常飞, 石晓朋, 尹俊杰   

  1. 空军工程大学 航空航天工程学院, 西安 710038
  • 收稿日期:2014-04-08 出版日期:2015-03-20 发布日期:2015-04-02
  • 通讯作者: 李曙林(1959—),男,河北威县人,教授,l.s.lin2008@163.com,主要研究方向为复合材料与飞行器结构强度. E-mail:l.s.lin2008@163.com
  • 作者简介:周彬(1991—),男,河南信阳人,硕士生,icy_sky@foxmail.com

Calculation of brake disk life based on unsteady discontinuous brake

ZHOU Bin, LI Shulin, CHANG Fei, SHI Xiaopeng, YIN Junjie   

  1. Aeronautics and Astronautics Engineering College, Airforce Engineering University, Xi'an 710038, China
  • Received:2014-04-08 Online:2015-03-20 Published:2015-04-02

摘要: 针对外场刹车盘使用寿命普遍短于试验预测值的问题,通过刹车摩擦系数曲线,以真实碳刹车使用统计规律为区间,拟合非稳态间断刹车的摩擦系数曲线,并运用动力学原理计算单次刹停和非稳态间断刹停的磨损行程,根据磨粒磨损计算公式得出2种刹车方式下的磨损比为1:1.899 7~1:2.036 3,与外场统计结果1:1.88~1:2.09相比,精度较高.计算中发现,在非稳态间断刹车过程中磨损工况变差是造成外场磨损加剧的主要原因,验证了连续刹车过程中形成的摩擦膜对减小磨损的重要作用.研究成果对于刹车寿命试验的改进和不同材料刹车盘外场寿命预测提供了一种理论计算的方法.

关键词: 非稳态间断刹车, 碳刹车盘, 使用寿命, 摩擦系数, 磨损

Abstract: Focus on the problem that the actual service life of brake disks is always shorter than the calculated data underground test, made use of the friction coefficient curves and took the actual statistic using boundary of carbon brake disk to fit a friction coefficient curve of unsteady discontinuous brake. The wear distance of one and several brakes to stop is calculated by using dynamic theory, and the wear rate of the two different braking is 1:1.899 7-1:2.036 3 using the formula of abrasive wear, which is exact compared with the statistic result 1:1.88-1:2.09 in the airfield. The wear condition becoming worse in unsteady discontinuous brake is the main reason leading to the wear speeding up of carbon brake disks fitting on the airplane. The important role of friction layer to reduce wear is proven and a calculation method is established to improve brake disks life test and estimate actual service lives of different-material brake disks by this study.

Key words: unsteady discontinuous brake, carbon brake disk, service life, friction coefficient, wear

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