0
Research Papers

A New Rotor-Ball Bearing-Stator Coupling Dynamics Model for Whole Aero-Engine Vibration

[+] Author and Article Information
G. Chen

College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. Chinacgzyx@263.net

J. Vib. Acoust 131(6), 061009 (Nov 19, 2009) (9 pages) doi:10.1115/1.4000475 History: Received September 25, 2008; Revised July 29, 2009; Published November 19, 2009; Online November 19, 2009

In this paper, a new rotor-ball bearing-stator coupling system dynamics model is established for simulating the practical whole aero-engine vibration. The main characteristics of the new model are as follows: (1) the coupling effect between rotor, ball bearing, and stator is fully considered; (2) the elastic support and the squeeze film damper are considered; (3) the rotor is considered as an Euler free beam of equal-section model, and its vibration is analyzed through truncating limited modes; (4) nonlinear factors of ball bearing such as the clearance of bearing, nonlinear Hertzian contact force, and the varying compliance vibration are modeled; and (5) rubbing fault between rotor and stator is considered. The Zhai method, which is a new explicit fast numerical integration method, is employed to obtain system’s responses, and the whole aero-engine vibration characteristics are studied. Finally, aero-engine tester including casing is established to carry out rubbing fault experiment, the simulation results from rotor-ball bearing-stator coupling model are compared with the experiment results, and the correctness of the new model is verified to some extent.

Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

The new rotor-ball bearing-stator coupling dynamics model with rubbing fault

Grahic Jump Location
Figure 2

Rotor model based on Euler free beam of equal-section

Grahic Jump Location
Figure 3

Rub-impact model

Grahic Jump Location
Figure 4

Ball bearing model

Grahic Jump Location
Figure 6

The responses of rotor in the X direction (rotating speed is 300 rpm)

Grahic Jump Location
Figure 7

Amplitude-rotating speed curves of rotor response under various support stiffnesses

Grahic Jump Location
Figure 8

Vibration modes of rotor response at critical speed under various support stiffnesses

Grahic Jump Location
Figure 9

The effect of cutting mode number on the rotor responses

Grahic Jump Location
Figure 10

Effect of SFD on rotor vibration response

Grahic Jump Location
Figure 11

Transit response after sudden-adding unbalance (2c=0.3 mm)

Grahic Jump Location
Figure 12

Transit response after sudden-adding unbalance (2c=0.2 mm)

Grahic Jump Location
Figure 13

Waterfall plots of rotor responses

Grahic Jump Location
Figure 14

Bifurcation plots of rotor responses

Grahic Jump Location
Figure 15

Aero-engine rotor rig

Grahic Jump Location
Figure 16

The vibration testing system of the aero-engine rotor tester

Grahic Jump Location
Figure 17

Aero-engine rotor rubbing experiment

Grahic Jump Location
Figure 18

The simulation and experimental waterfall plots of rotor responses

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In