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Research Papers: Applications

Dynamic Interactions Between the Rolling Element and the Cage in Rolling Bearing Under Rotational Speed Fluctuation Conditions

[+] Author and Article Information
Wenbing Tu

School of Mechanotronics and Vehicle Engineering,
East China Jiaotong University,
Nanchang 330013, China
e-mail: twb-2001@163.com

Ya Luo

School of Mechanotronics and Vehicle Engineering,
East China Jiaotong University,
Nanchang 330013, China
e-mail: luoya20022016@163.com

Wennian Yu

Department of Mechanical and Materials Engineering,
Queen’s University,
ON, K7L 3N6, Canada
e-mail: wennian.yu@queensu.ca

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received November 4, 2018; final manuscript received June 15, 2019; published online July 15, 2019. Assoc. Editor: Carl Hager.

J. Tribol 141(9), 091101 (Jul 15, 2019) (9 pages) Paper No: TRIB-18-1462; doi: 10.1115/1.4044082 History: Received November 04, 2018; Accepted June 16, 2019

A nonlinear dynamic model is proposed to investigate the dynamic interactions between the rolling element and cage under rotational speed fluctuation conditions. Discontinuous Hertz contact between the rolling element and the cage and lubrication and interactions between rolling elements and raceways are considered. The dynamic model is verified by comparing simulation result with the published experimental data. Based on this model, the interaction forces and the contact positions between the rolling element and the cage with and without the rotational speed fluctuation are analyzed. The effects of fluctuation amplitude, fluctuation frequency, and cage pocket clearance on the interaction forces between the rolling element and the cage are also investigated. The results show that the fluctuation of the rotational speed and the cage pocket clearance significantly affects the interaction forces between the rolling element and the cage.

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Figures

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Fig. 2

Schematic diagram of the interaction between rolling element and cage: (a) ball bearing and (b) roller bearing

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Fig. 1

Schematic diagram of the coordinate systems

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Fig. 5

Flowchart of the solution process

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Fig. 6

Cage speed comparison between simulation results and experiment results [4]

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Fig. 3

Traction coefficient curve

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Fig. 4

Forces acting on the jth rolling element

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Fig. 8

Variations of ball-pocket contact force, friction force, and ball position: (a) ball-pocket contact force without the rotational speed fluctuations of inner race, (b) ball-pocket contact force with the rotational speed fluctuation of inner race, (c) ball position in pocket without the rotational speed fluctuation of inner race, and (d) ball position in pocket with the rotational speed fluctuation of inner race

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Fig. 9

Dynamic contact forces under different rotational speed fluctuation amplitudes: (a) loaded zone and (b) unloaded zone

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Fig. 10

Dynamic contact forces under different rotational speed fluctuation frequencies: (a) loaded zone and (b) unloaded zone

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Fig. 11

Dynamic contact forces under different cage pocket clearances: (a) loaded zone and (b) unloaded zone

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Fig. 7

Time–history ball-pocket contact force of (a) experiment results [29,30] and (b) simulation results

Tables

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