摘要
进行了盘式制动器蠕动颤振的实车道路试验,理清该现象的发生工况与客观特征。在此基础上,以改进的Karnopp摩擦力模型为基础,建立了1/4车起步颤振机理模型和1/2车"弓状变形效应"影响机理模型,进行蠕动颤振再现与关键因素影响分析。结果表明,除摩擦副动静摩擦因数差之外,悬架系统的变形特性、驱动转矩、制动压力变化和前后轴间制动压力分配等都对制动器蠕动颤振有重要影响。
A real vehicle test is conducted on the creep groan of disk brake to clarify the occurring conditions and objective features of that phenomenon. On this basis, a 1/4 vehicle model for creep groan mechanism in vehicle start up and a 1/2 vehicle model for the affecting mechanism of 'bow-shaped deformation effects' are created, based on the improved Karnopp friction model, to reproduce creep groan and analyze the effects of key factors. The results show that the deformation characteristics of suspension, driving torque, braking pressure and the braking force distribution between axles also have important effects on the creep groan of disk brake, besides the difference between static and kinetic friction factors. © 2016, Society of Automotive Engineers of China. All right reserved.
出处
《汽车工程》
EI
CSCD
北大核心
2016年第9期1132-1139,共8页
Automotive Engineering
基金
国家自然科学基金(51575395)资助
关键词
盘式制动器
蠕动颤振
自激振动
粘滑运动
disk brake
creep groan
self-excited vibration
stick-slip motion
