旋转滑动摩擦高频噪声产生机理的实验研究
发布时间：2019-07-05 16:12
【摘要】：为了深入研究金属旋转滑动摩擦高频噪声的产生机理,以多功能摩擦磨损试验机为平台,采用单因素实验法来研究相对滑动速度、接触压力、表面形貌等影响因素对摩擦高频噪声的影响规律。实验发现:金属旋转滑动高频摩擦噪声多发生在相对滑动速度低、接触压力较大以及摩擦因数-速度负斜率处;摩擦副间相对滑动速度、接触压力和表面粗糙度的变化几乎不会对高频噪声的频率产生影响,但高频噪声声压级随表面粗糙度的增大呈现明显减小趋势。对摩擦噪声声压信号和法向、切向振动加速度信号进行互相关分析,结果表明,法向振动加速度信号和摩擦噪声声压信号之间具有更高的相关性,从而为进一步理解摩擦高频噪声的产生机理和预测模型的建立提供了参考。
文内图片：
图片说明：图２摩擦因数随摩擦时间的变化Ｆｉｇ．２Ｔｉｍｅｈｉｓｔｏｒｙｒｅｃｏｒｄｏｆｆｒｉｃｔｉｏｎａｌｃｏｅｆｆｉｃｉｅｎｔ
[Abstract]:In order to study the mechanism of metal rotation sliding friction high frequency noise, the influence of relative sliding speed, contact pressure and surface morphology on the friction high frequency noise is studied by single factor experiment method. It is found that the high-frequency friction noise of the metal rotary sliding occurs at a low relative sliding speed, a large contact pressure and a friction factor-velocity negative slope, and the relative sliding speed of the friction pair, the contact pressure and the change of the surface roughness hardly influence the frequency of the high-frequency noise, However, the sound pressure level of high-frequency noise shows a tendency to decrease with the increase of the surface roughness. the correlation analysis is carried out on the friction noise sound pressure signal and the normal and tangential vibration acceleration signals, and the results show that the normal vibration acceleration signal and the friction noise sound pressure signal have higher correlation, So as to provide a reference for the further understanding of the generation mechanism of the friction high-frequency noise and the establishment of the prediction model.
【作者单位】： 上海理工大学机械工程学院;上海理工大学出版印刷学院;
【基金】：国家自然科学基金资助项目(51275126) 清华大学摩擦学国家重点实验室开放基金资助重点项目(SKLTKF12B10)
【分类号】：TB53;TH117.1
本文编号：2510647
文内图片：
图片说明：图２摩擦因数随摩擦时间的变化Ｆｉｇ．２Ｔｉｍｅｈｉｓｔｏｒｙｒｅｃｏｒｄｏｆｆｒｉｃｔｉｏｎａｌｃｏｅｆｆｉｃｉｅｎｔ
[Abstract]:In order to study the mechanism of metal rotation sliding friction high frequency noise, the influence of relative sliding speed, contact pressure and surface morphology on the friction high frequency noise is studied by single factor experiment method. It is found that the high-frequency friction noise of the metal rotary sliding occurs at a low relative sliding speed, a large contact pressure and a friction factor-velocity negative slope, and the relative sliding speed of the friction pair, the contact pressure and the change of the surface roughness hardly influence the frequency of the high-frequency noise, However, the sound pressure level of high-frequency noise shows a tendency to decrease with the increase of the surface roughness. the correlation analysis is carried out on the friction noise sound pressure signal and the normal and tangential vibration acceleration signals, and the results show that the normal vibration acceleration signal and the friction noise sound pressure signal have higher correlation, So as to provide a reference for the further understanding of the generation mechanism of the friction high-frequency noise and the establishment of the prediction model.
【作者单位】： 上海理工大学机械工程学院;上海理工大学出版印刷学院;
【基金】：国家自然科学基金资助项目(51275126) 清华大学摩擦学国家重点实验室开放基金资助重点项目(SKLTKF12B10)
【分类号】：TB53;TH117.1
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