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Archive of Applied Mechanics
Published in: Archive of Applied Mechanics 7/2015

01-07-2015 | Original

Nonlinear dynamic behaviors of rod fastening rotor-hydrodynamic journal bearing system

Authors: Di Hei, Yanjun Lu, Yongfang Zhang, Fuxi Liu, Chao Zhou, Norbert Müller

Published in: Archive of Applied Mechanics | Issue 7/2015

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Abstract

The model of a rod fastening rotor-finite length journal bearing system is established in this paper. The contact surfaces between the disks and rods are modeled as bending resistance springs with nonlinear stiffness. The gyroscopic effect is considered in the 12 degrees-of-freedom model of the rod fastening rotor-bearing system. Based on the variational principle, an approximate analytical solution of nonlinear oil film forces of finite length journal bearing is proposed by the separation of variables method. By taking rotating speed, eccentricity and bending stiffness as control parameters, the nonlinear behaviors of the system are investigated by the improved Newmark method. The numerical results reveal periodic, period-doubling, period-4, quasi-periodic solutions etc. of rich and complex nonlinear behaviors of the system.
previous article Steady-state responses and wave propagations in the periodic plate
next article Strain and velocity gradient theory for higher-order shear deformable beams

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Appendix
Available only for authorised users
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Metadata
Title
Nonlinear dynamic behaviors of rod fastening rotor-hydrodynamic journal bearing system
Authors
Di Hei
Yanjun Lu
Yongfang Zhang
Fuxi Liu
Chao Zhou
Norbert Müller
Publication date
01-07-2015
Publisher
Springer Berlin Heidelberg
Published in
Archive of Applied Mechanics / Issue 7/2015
Print ISSN: 0939-1533
Electronic ISSN: 1432-0681
DOI
https://doi.org/10.1007/s00419-015-0996-5

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