Research on the Dynamic Characteristics of Magnetic Bearing-rotor System with Auxiliary Bearing

Ma, Lin; Wang, Shijun; Wang, Peng

doi:10.1088/1742-6596/1637/1/012140

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…It can be concluded that the contact between the rotor and the inner ring of the protective bearing is , and the contact coefficient is 10/9. The experimental method is also selected for the value of contact damping, and the commonly used contact damping value of 1000 N m / s  is selected [27]. It is also very important to set the contact friction.…”

Section: Establishment Of Dynamic Simulation Model For 5-dof Rotor-pr...mentioning

confidence: 99%

Dynamic Simulation of a 5 Degrees of Freedom Rotor Dropping on a Protective Bearing

Yu,

Han,

Ming

2024

Applied Sciences

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In the magnetic suspension bearing system, the protection bearing, as its key component, plays a role in supporting the safe operation of the drop rotor after the failure of the magnetic suspension bearing, to protect the whole system from damage. Based on a multi-body dynamics simulation, this paper studied the characteristics of the protection bearing, such as the speed fluctuation of the rotor and the bearing inner ring, and the contact force between the rotor and the protection bearing when the 5-DOF rotor fell on the protection bearing. By adjusting the friction coefficient, the initial speed of the rotor, and other parameters, the movement process of the rotor falling in the protection bearing was studied. By comparing the speed fluctuation and contact force of the rotor and the bearing inner race, the influencing factors and rules of the impact of the rotor falling on the protection bearing were analyzed and summarized.

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Section: Establishment Of Dynamic Simulation Model For 5-dof Rotor-pr...mentioning

confidence: 99%

Dynamic Simulation of a 5 Degrees of Freedom Rotor Dropping on a Protective Bearing

Yu,

Han,

Ming

2024

Applied Sciences

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“…This paper analyzed the rotation speed of the inner ring of the bearing, the axial collision force of the inner ring, the contact force between adjacent spheres, and the sliding speed of the raceway between the ball and the inner ring during the rotor dropping process and concluded that the fully-loaded ceramic ball has the margin to bear further load at high speed. Lin Ma et al [12] established a dynamic model of the rotor and the protective bearing. They analyzed the dynamic behavior of the axis trajectory diagram through the three-dimensional bifurcation diagram and two-parameter bifurcation diagram, optimized the structural parameter design of the rotor system, and determined its reasonable and stable working interval.…”

Section: Literature Reviewmentioning

confidence: 99%

Eccentric Rotor Drop Dynamics Study of Vertical Maglev Bearing System

et al. 2023

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When considering the problem of a vertical magnetic levitation bearing system, the rotor eccentric fall is more likely to cause the failure of the protective bearing. In this paper, a rotor drop collision model and a protective bearing dynamics model are constructed. It compares and analyzes the evolution of collision force values of the rotor eccentric drop as well as the non-eccentric drop. Further, this paper discusses the law of influence of three factors, rotor quality, rotational speed, and axial protection clearance, on the collision characteristics of the protected bearing in eccentric and non-eccentric cases. It has also experimentally verified this characteristic of rotor speed. The results show that compared with the non-eccentric condition, the axial impact force and radial impact forces of the rotor in the eccentric condition increase by 14% and 114%, respectively. Compared with the non-eccentric condition, with the increase in rotor quality, the axial and radial impact force increase by 68% on average, and the axial depth amplitude of the rotor increases by 350%. With the increase of rotor speed, the axial impact force without an eccentric drop is basically unchanged; the axial impact force of an eccentric drop increases slightly, and the radial impact force increases by 110%. With the increase of axial protection clearance, the radial displacement vibration of the rotor axis increases; the average increase of the maximum axial force is 120 N, and the average increase of the maximum radial force is 100%.

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Dynamic Analysis of Vertical Magnetic Suspension System Rotor Dropping to Protective Bearing with Different Structural Parameters

Zhu,

Pang,

Wang

et al. 2024

Int. J. Precis. Eng. Manuf.

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Research on the Dynamic Characteristics of Magnetic Bearing-rotor System with Auxiliary Bearing

Cited by 3 publications

References 12 publications

Dynamic Simulation of a 5 Degrees of Freedom Rotor Dropping on a Protective Bearing

Dynamic Simulation of a 5 Degrees of Freedom Rotor Dropping on a Protective Bearing

Eccentric Rotor Drop Dynamics Study of Vertical Maglev Bearing System

Dynamic Analysis of Vertical Magnetic Suspension System Rotor Dropping to Protective Bearing with Different Structural Parameters

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