摘要
在列车制动盘试样表面加工出不同宽度的发散型沟槽织构和不同直径与间距的发散型圆坑织构后,将其与光滑表面进行摩擦噪声对比试验,并利用数值分析方法进行模拟分析,研究织构表面对摩擦尖叫噪声特性的影响及作用机理。结果表明,两种织构表面均能降低摩擦系统高频尖叫噪声,且尺寸分布合理的沟槽织构能明显地抑制噪声的产生。利用数值分析方法能较好地揭示织构影响界面摩擦噪声的机理,即对摩材料滑过织构表面并碰击其棱边时,所产生的作用力能起到主动控制界面摩擦噪声的作用,且能抑制某些特定频率的尖叫噪声的产生。
Groove-textured surface with different widths and pit-textured surface with different diameters were manufactured on brake disc materials of the trains. Experimental test and numerical simulation were performed to investigate the influences of textured surface on friction noise by comparing the case of smooth surface,and consequently revealed the mechanism of the effects of textured surface on the friction vibration and noise. The results show that high-frequency squeal will be significantly suppressed by the two textured surfaces,and the groove-textured surfaces with specific dimensional distribution show good potential in reducing and suppressing squeal. Numerical analysis might be used to reveal the mechanism of the effects of textured surface on interfacial friction noise. A impulse force between the specimens is generated when friction material sliding across the edges of the grooves or pits,which plays a key role in friction noise active control at interface and suppresses the generation of some specific high-frequency squeal.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2016年第9期1158-1164,共7页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51375408)
教育部新世纪优秀人才支持计划资助项目(NCET-13-0974)
中央高校基本科研业务费专项资金资助项目(2682014CX129)
关键词
表面织构
圆坑
沟槽
摩擦噪声
摩擦磨损
主动控制
surface texture
pit
groove
friction noise
friction and wear
active control
