含轴电流损伤的球轴承动力学建模及特性分析

doi:10.12068/j.issn.1005-3026.2023.10.009

东北大学学报（自然科学版） ›› 2023, Vol. 44 ›› Issue (10): 1431-1439.DOI: 10.12068/j.issn.1005-3026.2023.10.009

含轴电流损伤的球轴承动力学建模及特性分析

李小彭，曲兴超，李柏涛，苏晶

(东北大学机械工程与自动化学院，辽宁沈阳110819)

发布日期:2023-10-27
通讯作者: 李小彭
作者简介:李小彭(1976－)，男，江西宁都人，东北大学教授，博士生导师.
基金资助:
国家重点研发计划项目(2020YFB2007802); 中央高校基本科研业务费专项资金资助项目(N2103025).

Dynamic Modeling and Property Analysis of Ball Bearings with Shaft Current Damage

LI Xiao-peng， QU Xing-chao， LI Bai-tao， SU Jing

School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China.

Published:2023-10-27
Contact: LI Xiao-peng
About author:-
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摘要/Abstract

摘要： 以风力发电机球轴承为研究对象，提出了凹坑形式的轴电流损伤模型，分析该损伤对轴承动力学特性的影响规律.利用半正弦和分段激励函数建立了一个含长度、宽度和深度的损伤模型，用于描述轴电流的不同损伤程度；建立了含轴电流损伤的轴承动力学模型，来研究损伤凹坑的大小和形状及外载荷对轴承的振动特性影响；通过轴承的接触分析，研究了轴电流损伤程度对轴承载荷分布的影响；将仿真结果和实验对比，验证了模型的正确性.研究结果表明:所提出的模型可以准确地描述由凹坑形式的轴电流损伤导致的冲击激励与周期性变化现象；随着轴电流损伤程度的增大，轴承的振动响应和接触力变大，系统趋于不稳定.

关键词: 轴电流；损伤模型；轴承；载荷；动力学

Abstract: Aimed at the wind turbine ball bearings， a shaft current damage model in the form of pits is proposed to investigate the influence of the shaft current pit damage on the bearings’ dynamic characteristics. A damage model with length， width and depth is established based on the half-sine and piecewise excitation functions to describe the different damage degrees of the shaft current. The dynamic model of the bearings with shaft current damage is built to study the influence of the pit size， the pit shape and the external load on the vibration properties of the bearings. The effect of the shaft current damage with different damage degrees on the load distribution of the bearings is investigated by the contact analysis. The correctness of the proposed model is verified by comparing the results from the numerical simulation and the experiment. The results show that the shock excitation and the periodic phenomenon caused by the shaft current pit damage can be accurately described by the proposed model. With the shaft current damage increasing， the vibration response and the contact force of the bearings increase， and the stability becomes worse.

Key words: shaft current; damage model; bearing; load; dynamics

中图分类号:

TH113.1

李小彭，曲兴超，李柏涛，苏晶. 含轴电流损伤的球轴承动力学建模及特性分析[J]. 东北大学学报（自然科学版）, 2023, 44(10): 1431-1439.

LI Xiao-peng， QU Xing-chao， LI Bai-tao， SU Jing. Dynamic Modeling and Property Analysis of Ball Bearings with Shaft Current Damage[J]. Journal of Northeastern University(Natural Science), 2023, 44(10): 1431-1439.

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含轴电流损伤的球轴承动力学建模及特性分析

Dynamic Modeling and Property Analysis of Ball Bearings with Shaft Current Damage

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