振动
方位(导航)
加速度
结构工程
滚动轴承
有限元法
随机振动
表面粗糙度
激发
工程类
机械
材料科学
声学
物理
经典力学
复合材料
电气工程
天文
作者
Mahdi Behzad,Abbas Rohani Bastami,Éric David
出处
期刊:Journal of Vibration and Acoustics
日期:2011-04-11
卷期号:133 (4)
被引量:67
摘要
Prediction of the vibration response due to defects on rolling element bearings requires having an accurate representative vibration model. In this paper, a new model for vibration generation in the rolling element bearings has been introduced. The proposed model assumes a stochastic source of vibration excitation, which is produced as a result of metallic contact between bearing elements during rolling. This model explains high frequency vibration in the acceleration spectrum clearly. When a defect grows in the bearing, the roughness of the contacting surfaces increases locally and stochastic excitation becomes stronger in the defective area. The increased vibration level at the defective area is a good indicator of bearing faults. A numerical simulation of the proposed model was validated with experimental results.
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