Study on the Nonlinear Characteristic of a Rotor-Bearing System between the Continuum Model and Discrete Model

Chao Feng Li; Wei Sun; Chen Yi Liu; Bang Chun Wen

doi:10.4028/www.scientific.net/AMM.16-19.851

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 16-19Study on the Nonlinear Characteristic of a...

Study on the Nonlinear Characteristic of a Rotor-Bearing System between the Continuum Model and Discrete Model

Abstract:

The nonlinear dynamic behavior of a rotor-bearing system is analyzed with its finite element model based on the analysis of the discrete model, with considering some other important influencing factors such as, material damping, gyroscopic effect, inertia distribution, shear effect and so on, which make the description of the system more embodiment avoiding the casualness of selection with system parameters. With the comparison of the results on the bifurcation map and three-dimensional spectrum, significant difference is appeared with the addition of the considered factors. It is suggested that the substitution of continuum model for the discrete ones can get more accurate and abundant results. Furthermore, these results can provide more accurate verification and reference for the experiment and nonlinear dynamic design of the complex rotor system.

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Periodical:

Applied Mechanics and Materials (Volumes 16-19)

Pages:

851-855

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.16-19.851

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Online since:

October 2009

Authors:

Chao Feng Li, Wei Sun, Chen Yi Liu, Bang Chun Wen

Keywords:

Bifurcation, Chaos, Continuous Model, Finite Element Model (FEM), Nonlinear Characteristic, Rotor-Bearing System

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