摩擦片底料阻尼比对盘式制动器冷态尖叫的影响  

Influence of Brake Pad Underlayer Damping Ratio on Cold Squeal of Disc Brake

作　　者：李碧军 吴磊 何小波 李飞 黎熙 LI Bi-jun;WU Lei;HE Xiao-bo;LI Fei;LI Xi(NIO Automotive Technology(Anhui)Co.,Ltd,Hefei 230601,China)

机构地区：[1]蔚来汽车科技(安徽)有限公司,合肥230601

出　　处：《汽车科技》2023年第6期26-31,共6页Auto Sci-Tech

摘　　要：本文结合制动尖叫的发生机理,通过复模态分析系统的不稳定度,识别出摩擦片对冷态制动尖叫的贡献度最大,对比两种含不同性能石墨颗粒的摩擦片底料的阻尼比,含回弹性好的石墨的摩擦片底料能够提高摩擦片的阻尼比,从而可以降低系统的不稳定度,通过台架试验和实车试验验证表明,该方法能够有效对改善冷态制动尖叫。In this paper,based on the mechanism of brake squeal,the instability of the system is analyzed by complex mode,and the maximum contribution of the brake pad to cold brake squeal is identified.The damping ratio of the underlayer of the brake pad containing different performance graphite particles is compared.The damping ratio of the underlayer of the brake pad containing good resilient graphite can improve the damping ratio of the brake pad,thus reducing the instability of the system.The bench test and vehicle test show that the method can effectively improve the cold braking squeal.

关 键 词：冷态制动尖叫 摩擦片底料 阻尼比 摩擦片底料 

分 类 号：U463.51[机械工程—车辆工程]