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Research Papers: Applications

Experiments and Numerical Results for Varying Compliance Contact Resonance in a Rigid Rotor–Ball Bearing System

[+] Author and Article Information
Yulin Jin

School of Astronautics,
Harbin Institute of Technology,
P.O. Box 137,
Harbin 150001, China
e-mail: jinyl@hit.edu.cn

Rui Yang

School of Astronautics,
Harbin Institute of Technology,
P.O. Box 137,
Harbin 150001, China

Lei Hou

School of Astronautics,
Harbin Institute of Technology,
P.O. Box 137,
Harbin 150001, China;
School of Energy Science and Engineering,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: houlei@hit.edu.cn

Yushu Chen

School of Astronautics,
Harbin Institute of Technology,
P.O. Box 137,
Harbin 150001, China
e-mail: yschen@hit.edu.cn

Zhiyong Zhang

School of Astronautics,
Harbin Institute of Technology,
P.O. Box 137,
Harbin 150001, China;
School of Science,
Nanjing University of Science and Technology,
Nanjing 210094, China

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received April 7, 2016; final manuscript received November 9, 2016; published online April 4, 2017. Assoc. Editor: Daejong Kim.

J. Tribol 139(4), 041103 (Apr 04, 2017) (7 pages) Paper No: TRIB-16-1116; doi: 10.1115/1.4035339 History: Received April 07, 2016; Revised November 09, 2016

This paper investigates the nonlinear characteristics of varying compliance contact resonance in a rotor–bearing system and takes into consideration the Hertzian contact deformation and internal radial clearance. We created an experimental rig of a rigid rotor supported by rolling element bearings. In the course of the rotational speed run up and down, the frequency–amplitude curves of the varying compliance vibrations were observed during experiments using different radial loads and compared with the results of our numerical simulations. The experimental and numerical results indicate that the varying compliance contact resonance in the vertical direction presents the soft spring characteristic, while the soft and hard spring characteristics coexist for the horizontal resonance.

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Figures

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Fig. 1

Experimental rig: (a) rigid rotor–ball bearing system, (b) motor, control system, and data-collection system, and (c) profile of test rig

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Fig. 2

Sketch of the rigid rotor–ball bearing system

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Fig. 3

Displacement responses and frequency spectrums of the varying compliance contact resonance region in the vertical direction: (a) experimental frequency spectrum and displacement response at the rotational speed ω = 293.2 rad/s and (b) numerical frequency spectrum and displacement response at the rotational speed ω = 293.2 rad/s

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Fig. 4

Displacement responses and frequency spectrums of the varying compliance contact resonance region in the horizontal direction: (a)experimental frequency spectrum and displacement response at the rotational speed ω = 356 rad/s and (b) numerical frequency spectrum and displacement response at the rotational speed ω = 356 rad/s

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Fig. 5

Numerical and experimental frequency–amplitude curves of the varying compliance contact resonance in the horizontal (x) and vertical (y) directions with a radial load of 230 N: (a) numerical frequency–amplitude curve (x), (b) numerical frequency–amplitude curve (y), (c) experimental frequency–amplitude curve (x), and (d) experimental frequency–amplitude curve (y)

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Fig. 6

Numerical and experimental frequency–amplitude curves of the varying compliance contact resonance in the horizontal (x) and vertical (y) directions with a radial load of 5040 N: (a) numerical frequency–amplitude curve (x), (b) numerical frequency–amplitude curve (y), (c) experimental frequency–amplitude curve (x), and (d) experimental frequency–amplitude curve (y)

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Fig. 7

Load distribution of the ball bearing

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