滚动轴承局部损伤的完备预测模型与GID评估

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (9) : 35-39.

论文

滚动轴承局部损伤的完备预测模型与GID评估

袁幸1; 朱永生1; 洪军2; 张优云1

作者信息 +

An integrated model to predict vibration response of rolling bearing to localized defect and grd assessment

Yuan Xing1; Zhu Yong-sheng1; Hong Jun2; Zhan You-yun1

Author information +

文章历史 +

摘要

现有的轴承局部损伤模型往往忽略了滚动体和支座的影响，因此所得振动特征误差较大。为了解决这个问题，提出了一种新颖的滚动轴承有、无故障完备预测模型，该模型将滚动体-套圈-支座的接触问题考虑为非线性Hertzian接触和多自由度质量-刚度-阻尼系统，进而应用Runge–Kutta数值方法计算了轴承局部损伤下的时、频域响应。最后，针对实际服役轴承系统运行状态的复杂性、不确定性及乏样本的特点，引入灰色关联度（grey incidence degrees）根据预测响应复合特征向量对滚动轴承的不同状态进行了定量评估，实验研究结果表明本文的正确性和有效性。

Abstract

In the previous bearing models, vibration characteristics have a larger error compared with the practical project because of neglecting the impact of pedestal and rolling element. A novel prediction model has been developed to obtain the vibration response due to localized defect of bearing system in order to solve the problem. In the analytical formulation, the contacts between the rolling elements and the races are considered as non-linear springs. The contact force is calculated using the Hertzian contact deformation theory and the bearing system is modeled as multi-degrees-of-freedom system. The implicit type numerical integration technique Runge–Kutta method is used to solve the non-linear differential equations iteratively. A computer program is developed to simulate surface defects of the components. Then grey incidence degree (GRD) is employed to investigate the Condition assessment based on hybrid features obtained from the novel model. The new technique is experimentally evaluated using vibration signals measured on rolling bearings system that contain localized defects, and good results were obtained that verified the validity and effectiveness of this paper.

导出引用

袁幸;朱永生;洪军;张优云. 滚动轴承局部损伤的完备预测模型与GID评估[J]. 振动与冲击, 2011, 30(9): 35-39

Yuan Xing;Zhu Yong-sheng;Hong Jun;Zhan You-yun. An integrated model to predict vibration response of rolling bearing to localized defect and grd assessment[J]. Journal of Vibration and Shock, 2011, 30(9): 35-39