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research-article

Experiments and numerical results for varying compliance vibrations in a rigid-rotor ball bearing system

[+] Author and Article Information
Yulin Jin

School of Astronautics, Harbin Institute of Technology, PO Box 137, Harbin 150001, China
jinyl@hit.edu.cn

Rui Yang

School of Astronautics, Harbin Institute of Technology, PO Box 137, Harbin 150001, China
yangrui89@hit.edu.cn

Lei Hou

School of Astronautics, Harbin Institute of Technology, PO Box 137, Harbin 150001, ChinaSchool of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
houlei@hit.edu.cn

Yushu Chen

School of Astronautics, Harbin Institute of Technology, PO Box 137, Harbin 150001, China
yschen@hit.edu.cn

Zhiyong Zhang

School of Astronautics, Harbin Institute of Technology, PO Box 137, Harbin 150001, ChinaSchool of Science, Nanjing University of Science and Technology, Nanjing 210094, China
zhiyzhang@njust.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4035339 History: Received April 07, 2016; Revised November 09, 2016

Abstract

This paper investigates the nonlinear characteristics of varying compliance (VC) 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 VC 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 VC contact resonance in the vertical direction presents the soft spring characteristic, while the soft and hard spring characteristics coexist for the horizontal resonance.

Copyright (c) 2016 by ASME
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