制动力对制动尖叫噪声及磨损特性的影响  

Effect of Braking Force on the Characteristics of Brake Squeal and Wear

作　　者：李建熹 莫继良[1] 王东伟[1] 朱章杨 盖小红[1] 陈光雄[1] 

机构地区：[1]西南交通大学摩擦学研究所,四川成都610031

出　　处：《润滑与密封》2017年第3期49-53,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(51375408);教育部新世纪优秀人才支持计划项目(NCET-13-0974)

摘　　要：在自行研制的新型摩擦制动噪声试验台上,采用锻钢制动盘和铜基粉末冶金制动片作为摩擦副,研究制动力对制动尖叫噪声特性和界面磨损特征的影响。结果表明:随着制动力的增大,摩擦系统不稳定振动加强,系统产生高强度制动尖叫噪声的倾向增强;制动力的增大导致摩擦界面磨损更加严重,黏着撕裂和剥落、犁削、磨屑堆积等"不平顺"因素对接触界面产生连续激励并加剧系统的不稳定振动,进一步诱导高强度制动尖叫噪声的产生。An experimental test was performed to investigate the effect of braking force on brake squeal properties and wear characteristics of the friction contact surface by using a new self-developed friction brake noise experimental set-up. The friction contact surface was created between the forged steel brake disc and copper-based powder metallurgy （P/M） pad.The experimental results show that the friction system has more tendencies to generate unstable vibration with the in- creasing of braking force, which indicates that the friction system with higher braking force has a higher potential in genera- ting squeal noise. Moreover, higher braking force causes more serious wear of the friction interface, which promotes the for- mation of adhesion and tearing, detachment,plough and debris accumulation.These ＂uneven＂ factors play a significant role in hammering the interface continuously and accordingly causing the generation of squeal noise.

关 键 词：制动力 尖叫噪声 摩擦振动 磨损 

分 类 号：U463.512[机械工程—车辆工程] TB533.1[交通运输工程—载运工具运用工程]