通风盘制动器盘-块接触位置变化对尖叫复模态分析的影响  

The Impact of Disc-Pad Contact Position Variation on the Complex Modal Analysis of Ventilated Disc Brake Squeal

作　　者：张立军[1,2] 孟德建[1,2] 孙俊刚[1,2] 

机构地区：[1]同济大学汽车学院,上海201804 [2]同济大学智能型新能源汽车协同创新中心,上海201804

出　　处：《汽车工程》2016年第2期242-247,共6页Automotive Engineering

基　　金：国家自然科学基金(51175380);中央高校基本科研业务费专项资金资助

摘　　要：为了分析盘-块接触位置对通风盘式制动器尖叫复模态的影响,建立了具有完全相同外廓尺寸的实心盘式制动器和通风盘式制动器有限元模型,进行18个不同接触位置下不稳定复模态的计算和分析,并对典型接触位置下的接触压力分布进行了对比。结果表明,通风盘式制动器的不稳定模态数量和实部大小显著依赖于接触位置的变化,且不稳定模态特征值呈现出与散热筋分布相关的周期性特征;接触位置变化引起的接触压力变化是导致不稳定模态计算结果差异的原因。To analyze the influence of disc-pad contact position on the complex modes of squeal in ventilated disc brake,finite element models for a solid disc brake and a ventilated disc brake with same overall dimensions are established.Based on the models,the unstable complex modes at 18 different pad-disc contact positions are calculated and analyzed,and the contact pressure distribution at typical contact positions are compared. The results show that the number and the real part magnitude of unstable complex modes of ventilated disc brake greatly depend on contact positions,the eigenvalues of unstable complex modes exhibit a feature of periodicity related to the layout of cooling ribs,and the cause of the discrepancy in the calculation results of unstable complex modes is the change of contact pressure induced by the variation of contact positions.

关 键 词：通风盘式制动器 不稳定复模态 接触位置 接触压力分布 周期性 

分 类 号：U463.512[机械工程—车辆工程]