Dynamic modeling and characteristics analysis of cylindrical roller bearing with the surface texture on raceways

The vibration responses of cylindrical roller bearings can be affected by the surface texture on raceways, which includes surface waviness and roughness. Thus, it is very important to develop a dynamic model which can describe the surface texture comprehensively and simulate vibration responses of bearings accurately at high rotating speed. In this paper, a complex dynamic model of cylindrical roller bearings with consideration of surface tex-ture is developed. The developed model is verified by simulations and experiments about the relationship between wave numbers and vibration responses. Based on the developed model, several dynamic characteristics of roller bearings are discussed: a) the influence of radial clearance and rotation speed on the stability of cage; b) the contact between a roller and raceways; c) the variation of rotation angular speed of roller. Results show that with the radial clearance increase, the stability of cage rise first and decrease. The cage stability is also affected by the rotation speed of inner raceway. The constitution of contact force between a roller and raceway are different between loaded zone and unloaded zone. Changes of angular rotation velocity of roller also have some regulations. CO 2021 Elsevier Ltd. All rights reserved. Roller bearings are vital components in rotating machinery [1]. Cylindrical roller bearings as an important kind of roller bearing are widely used in modern industry, including aero-engines, machine tools and trains. Under the condition of high rotation speed and complex load, the surface texture of the bearing will change with the operation of the bearing. The vibration responses of bearings may also change with the morphology of the surface texture, which can lead to more difficulties to the fault diagnosis of bearing. Therefore, the accurate understanding of vibration responses of bearings with surface texture plays an important role in maintaining the healthy and efficient operation of the system. Due to the significance of vibration responses analysis of bearings, many scholars have carried wide research on it. Jones

Automated summary

This paper develops a complex dynamic model of cylindrical roller bearings with consideration of surface texture, which is verified by simulations and experiments on the relationship between wave numbers and vibration responses. Various dynamic characteristics of roller bearings are discussed, including the influence of radial clearance and rotation speed on cage stability, roller-raceway contact, and rotation angular speed of roller.