滚动轴承内外圈损伤对双盘转子响应特性影响分析

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摘要针对滚动轴承支承下的双盘转子系统，考虑由于滚动轴承刚度变化而产生的VC (Varying compliance) 振动，利用Lagrange方程建立了双盘转子—轴承系统动力学模型。在此基础上，考虑滚动轴承外圈、内圈局域损伤的典型故障，运用数值积分方法，分别研究了系统轴承外圈、内圈局域损伤对系统动力学特性的影响。结果表明：轴承内外圈损伤会对双盘转子系统的动力学特性产生较大的影响，特别是在低转速阶段，轴承内外滚道出现损伤故障都会使其振动信号增大，且损伤的宽度越大增大得越明显；外滚道的损伤会对轴承游隙的非线性因素产生干扰，而内滚道的损伤则会增强这一因素的作用。

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关键词 ：双盘转子-轴承系统, 滚动轴承内外圈损伤, 动力学特性, 数值积分

Abstract：For a dual-disc rotor system supported with rolling bearings, its dynamic model fully considering VC (varying compliance) vibration arising due to periodic change of rolling bearings’ stiffness was established by using Lagrange equation. Forces exerted on the rotor system due to bearings having local damage on outer and inner rings were analyzed. With the method of numerical integration, the system responses were obtained. The effects of bearings’ outer and inner rings damage on dynamic characteristics of the rotor system were studied. It was shown that damages of bearings’ outer and inner rings have larger effects on dynamic characteristics of the rotor-bearing system, these damages can enlarge the system’s vibration, especially, within a lower rotating speed range, the system’s vibration amplitude increases with increase in damage width; damage on outer ring interferes nonlinear factors of bearing clearance, while damage on inner ring enhances the action of these factors.

Key words： dual-disc rotor-bearing system inner and outer rings&rsquo damage of rolling bearing dynamic characteristics numerical integration

收稿日期: 2016-09-19 出版日期: 2018-03-28

引用本文:

黄亚明 1，2,曹树谦 1,2,3. 滚动轴承内外圈损伤对双盘转子响应特性影响分析[J]. 振动与冲击, 2018, 37(7): 43-51.
HUANG Ya-ming1,2 CAO Shu-qian 1,2,3. Effects of inner and outer rings’ damage of rolling bearings on responses of a dual-disc rotor-bearing system. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(7): 43-51.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2018/V37/I7/43

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