摘要
基于面-面接触旋转式滑动干摩擦系统,选用A3&45#钢为摩擦副材料,研究相对滑动速度,表面压力对高频摩擦噪声的影响和规律。运用ABAQUS有限元模态分析高频摩擦噪声产生的原因与机理。通过实验与模态分析发现,摩擦高频噪声易于发生在相对滑动速度较低处。A3&45#摩擦副,在面-面接触旋转式滑动干摩擦条件下,产生的高频摩擦噪声能量集中分布在7950 Hz,9200 Hz。验证了干摩擦条件下,摩擦高频噪声是由于摩擦界面形成类似"锤击效应"的微凸体之间的运动,使得摩擦力高频成分和系统固有频率耦合引起的系统不稳定现象。
The research is based on the surface-surface contact spin sliding dry friction system. A3 & 45# steel is used for friction pair. The effect of sliding speed, normal pressure on frictional high-frequency noise is experimentally studied. Finally, through ABAQUS the finite element modal analysis, study the causes of friction high-frequency noise and mechanism. The analysis found that the friction high - frequency noise is easy to occur when the relative sliding velocity is lower. About the friction pair A3 & 45# steel, the frequency of friction high-frequency noise is more than 7kHz, and energy distribution is concentrated on 7950Hz, 9200Hz. It verified that in dry friction system, the phenomenon of high-frequency noise is similar to 'hammer effect' between friction interface and micro convex, resulting in high-frequency friction force and natural frequency of friction system coupling system unstable phenomenon.
出处
《机械设计与制造》
北大核心
2017年第S1期49-51,共3页
Machinery Design & Manufacture
基金
国家自然科学基金面上项目(51275126)
清华大学摩擦学国家重点实验室开放基金重点项目资助(SKLTKF12B10)
关键词
滑动干摩擦
高频噪声
滑动速度
表面压力
模态分析
Dry Sliding Friction
Frictional High-Frequency Noise
Sliding Speed
Pressure
Modal Analysis
