基于滑移非理想赫兹接触的滚动轴承振动特性分析

涂文兵,张桂源,罗丫,陈超,梁杰,杨本梦

振动与冲击 ›› 2023, Vol. 42 ›› Issue (5) : 30-38.

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PDF(3591 KB)
振动与冲击 ›› 2023, Vol. 42 ›› Issue (5) : 30-38.
论文

基于滑移非理想赫兹接触的滚动轴承振动特性分析

  • 涂文兵,张桂源,罗丫,陈超,梁杰,杨本梦
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Vibration characteristics analysis of rolling bearing based on sliding non-ideal Hertz contact

  • TU Wenbing, ZHANG Guiyuan, LUO Ya, CHEN Chao, LIANG Jie, YANG Benmeng
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摘要

传统方法对滚动轴承振动特性的分析大部分是基于理想赫兹接触理论,然而当轴承发生打滑,滚动体与滚道会出现滑移现象,因此滚动体与滚道的滑移接触问题超出了Hertz理论的假设范畴。针对这一问题,本文提出了滚动体与内、外滚道的滑移非理想赫兹接触,通过理论分析和接触有限元模型获得载荷-变形公式和变形系数;基于滑移非理想赫兹接触理论建立圆柱滚子轴承动力学模型,对比分析了赫兹和滑移接触对轴承振动特性的影响规律。研究表明,滑移接触下轴承振动信号存在滞后现象,在低速工况时,轴承振动水平相比赫兹接触的振动水平较高,而在高速工况中轴承振动水平相比较低;同时滑移非理想赫兹相较与赫兹理论,进一步考虑接触面相对滑移的作用,与轴承的实际工况更为贴近。

Abstract

Most of the traditional methods to analyze the vibration characteristics of rolling bearing are based on the ideal Hertz contact theory. However, when the bearing slips, the sliding phenomenon will appear between the rolling element and the raceway. Therefore, the sliding contact problem between the rolling element and the raceway is beyond the hypothetical scope of Hertz theory. To solve this problem, the sliding non-ideal Hertzian contact between the rolling element and the inner or outer raceways is proposed in this paper. The load-deformation formula and deformation coefficient are obtained through theoretical analysis and contact finite element model; Based on the sliding non ideal Hertz contact theory, the dynamic model of cylindrical roller bearing is established, and the effects of Hertz and sliding contact on the vibration characteristics of bearing are compared and analyzed. The research shows that the vibration signal of bearing under sliding contact has hysteresis phenomenon. The vibration level of bearing is higher than that of Hertz contact at low speed, but lower at high speed; At the same time, compared with Hertz theory, the effect of relative sliding of contact surface is further considered, which is closer to the actual working condition of bearing.

关键词

轴承 / 滑移接触 / 有限元 / 动力学 / 振动特性

Key words

bearing / sliding contact / finite element model / dynamic model / vibration characteristics

引用本文

导出引用
涂文兵,张桂源,罗丫,陈超,梁杰,杨本梦. 基于滑移非理想赫兹接触的滚动轴承振动特性分析[J]. 振动与冲击, 2023, 42(5): 30-38
TU Wenbing, ZHANG Guiyuan, LUO Ya, CHEN Chao, LIANG Jie, YANG Benmeng. Vibration characteristics analysis of rolling bearing based on sliding non-ideal Hertz contact[J]. Journal of Vibration and Shock, 2023, 42(5): 30-38

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