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

Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (5) : 30-38.

PDF(3591 KB)
PDF(3591 KB)
Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (5) : 30-38.

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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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.

Key words

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

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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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