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Shock and Vibration Volume 2018 ,2018-11-04
Effects of Surface Waviness on the Nonlinear Vibration of Gas Lubricated Bearing-Rotor System
Research Article
Jian Li 1 , 2 Shaoqi Yang 1 , 3 Xiaoming Li 1 , 3 Qing Li 1 , 2 , 3
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DOI:10.1155/2018/8269384
Received 2018-05-30, accepted for publication 2018-09-25, Published 2018-09-25
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摘要

This paper presents the effects of the surface waviness on the nonlinear dynamic performance of a gas bearing-rotor system. The coupled vibration with the elastomer is taken into consideration to fit the actual engineering application. The effects of the directions, the amplitudes, and the numbers of waves to the nonlinear dynamic performance are investigated. The results show that the existence of the surface waviness in the circumferential direction can improve the stability of the system obviously. But the surface waviness in the axial direction is damage to the system. The nonlinear dynamic performance of the system is insensitive to the number of surface waviness. The increase of the amplitude of the waviness in circumferential direction can improve the stability of the system.

授权许可

Copyright © 2018 Jian Li et al. 2018
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

图表

Model of self-acting gas journal bearing with surface waviness.

Schematic of a rigid rotor (massless shaft and disk) in journal bearing with elastic damper.

Schematic of a rigid rotor (massless shaft and disk) in journal bearing with elastic damper.

Comparison of steady state calculation results for journal gas bearing, D = L.

Bifurcation diagrams of rotor: (a)XsnT and (b)YsnT versus half mass of rotor.

Bifurcation diagrams of rotor: (a)XsnT and (b)YsnT versus half mass of rotor.

Bifurcation diagrams of rotor center with circumferential surface waviness: (a) Xs (nT) and (b) Ys (nT) versus half mass of rotor.

Bifurcation diagrams of rotor center with circumferential surface waviness: (a) Xs (nT) and (b) Ys (nT) versus half mass of rotor.

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.65 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5 ).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.65 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5 ).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.65 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5 ).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.65 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5 ).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.65 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5 ).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.65 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5 ).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.75 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.75 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.75 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.75 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.75 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 0.75 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1.1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1.1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1.1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1.1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1.1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1.1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=3).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=3).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=3).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=3).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=3).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=3).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=7).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=7).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=7).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=7).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=7).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 1μm, and N=7).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 2μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 2μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 2μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 2μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 2μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms = 1 kg, ξ = 0.005, k = 4e6N/m, A = 2μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms=1 kg, ξ = 0.005, k = 4e6N/m, A = 3μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms=1 kg, ξ = 0.005, k = 4e6N/m, A = 3μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms=1 kg, ξ = 0.005, k = 4e6N/m, A = 3μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms=1 kg, ξ = 0.005, k = 4e6N/m, A = 3μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms=1 kg, ξ = 0.005, k = 4e6N/m, A = 3μm, and N=5).

Obits, Poincare map, and amplitude spectrum of rotor center (ms=1 kg, ξ = 0.005, k = 4e6N/m, A = 3μm, and N=5).

Bifurcation diagrams of rotor center with axial surface waviness: (a) Xs (nT) and (b) Ys (nT) versus half mass of rotor.

Bifurcation diagrams of rotor center with axial surface waviness: (a) Xs (nT) and (b) Ys (nT) versus half mass of rotor.

通讯作者

Qing Li.State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing 100190, China;School of Energy Power and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China, hust.edu.cn;University of Chinese Academy of Sciences, Beijing 100049, China, ucas.ac.cn.simple_lxcy2014@163.com

推荐引用方式

Jian Li,Shaoqi Yang,Xiaoming Li,Qing Li. Effects of Surface Waviness on the Nonlinear Vibration of Gas Lubricated Bearing-Rotor System. Shock and Vibration ,Vol.2018(2018)

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