Eccentricity and Rotational Speed Effect on the Rotor-Bearing

Bing Dai; Guang Bin Yu; Jun Peng Shao; Long Huang

doi:10.4028/www.scientific.net/AMM.274.237

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Eccentricity and Rotational Speed Effect on the Rotor-Bearing
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 274Eccentricity and Rotational Speed Effect on the...

Eccentricity and Rotational Speed Effect on the Rotor-Bearing

Abstract:

Bearing dimensionless nonlinear oil film force model is deduced based on Capone theory of cylindrical bearings in this paper. Jeffcot rigid rotor-bearing system dynamic equations are built based on nonlinear dynamics, bifurcation, chaos theory. Eccentricity increases with the speed of the system by writing MATLAB codes. It appears the periodic motion, times of periodic motion and a series of non-linear kinetics. The system eccentricity increases with a series of emergence of non-linear dynamics when speed conditions is fixed, which is the actual system design’s basis. The finite element model of gas turbine rotor-bearing system is built by ANSYS software platform in this paper. The radial bearing deformation relationship are obtained by deformation theory of centrifugal force at high speed bearing radial deformation.

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Periodical:

Applied Mechanics and Materials (Volume 274)

Pages:

237-240

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.274.237

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Online since:

January 2013

Authors:

Bing Dai, Guang Bin Yu, Jun Peng Shao, Long Huang

Keywords:

Eccentricity, Nonlinear Dynamics, Otor-Bearing System, Rotational Speed

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References

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