摘要
对所研制的摩阻材料在1:1惯性制动试验台上进行停车制动试验过程中所表现出的温度特性进行了研究,并从能量转化、传热、材料性能变化等几方面进行了分析。结果表明:各制动初速度下的温度特性曲线均可分为无反应阶段、迅速升温阶段和温升缓慢变化阶段,其中制动初速度为180 km·h-1的温度特性曲线出现异常:由于停车制动过程中能量转化的趋势逐渐变缓和制动结束阶段散热效果的相对增强,使得第三阶段温度上升的趋势变缓甚至出现温度下降,而闸片表面摩擦膜的出现是180 km·h-1的温度特性曲线出现异常的原因。
The temperature characteristics of the developed friction material showed in the parking brake test by friction & wear tester for railway rolling stocks are studied, and the analyses are given from the point of view of energy conversion, heat transmission and change of material nature. The results showed that all of the temperature characteristic curves under different initial braking speed can be divided into three stages, that is irresponsive stage, rapid temperature rise stage and slow temperature change stage, and the curve of 180 km·h-1 showed abnormal change. The reason of abnormity of the third stage is that the rate of energy conversion during parking brake slowed down and at the same time the effect of heat dissipation enhanced relatively when the braking close to finished. The abnormity of the temperature characteristic curve at 180 km·h-1 is attributed to the formation of friction film on the surface of brake pads.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2003年第2期150-154,共5页
Journal of Mechanical Engineering
基金
山东省重点基金资助项目(Z99F03)。
