Computational Analysis of Nonlinear Dynamics of a Multi-disk Rotor-Bearing-Brush Seal System

Yuan Wei; Zhaobo Chen; Yinghou Jiao; Shulin Liu

doi:10.1007/978-3-319-99270-9_25

Computational Analysis of Nonlinear Dynamics of a Multi-disk Rotor-Bearing-Brush Seal System

Yuan Wei^*
, Zhaobo Chen
, Yinghou Jiao
, Shulin Liu

^*Corresponding author for this work

Shanghai University
School of Mechatronics Engineering, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The seal force and oil-film force are two of the main factors which would cause the instability of rotor system, so it is important to further study the nonlinear dynamic characteristics of the multi-disk rotor-bearing-seal system. In order to establish the multi-disk rotor-bearing-brush seal system model of a gas turbine, the seal force model of brush seal and the nonlinear oil-film force model based on short bearing theory were adopted considering the lateral deflection of the disks. The equation of motion was solved by time simulation using the fourth order Runge-Kutta method. The influences of key parameters including rotor speed and eccentricity phase-difference on the vibration response and dynamic behavior of multi-disk rotor-bearing-brush seal system were discussed. The result showed that the system became more stable when the eccentricity phase-difference decreased.

Original language	English
Pages (from-to)	350-362
Number of pages	13
Journal	Mechanisms and Machine Science
Volume	62
DOIs	https://doi.org/10.1007/978-3-319-99270-9_25
State	Published - 2019
Externally published	Yes

Keywords

Brush seal
Multi-disk rotor-bearing-seal system
Nonlinear dynamics
Numerical analysis

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10.1007/978-3-319-99270-9_25

Cite this

@article{03bc694088624b57a539ac877abae01d,

title = "Computational Analysis of Nonlinear Dynamics of a Multi-disk Rotor-Bearing-Brush Seal System",

abstract = "The seal force and oil-film force are two of the main factors which would cause the instability of rotor system, so it is important to further study the nonlinear dynamic characteristics of the multi-disk rotor-bearing-seal system. In order to establish the multi-disk rotor-bearing-brush seal system model of a gas turbine, the seal force model of brush seal and the nonlinear oil-film force model based on short bearing theory were adopted considering the lateral deflection of the disks. The equation of motion was solved by time simulation using the fourth order Runge-Kutta method. The influences of key parameters including rotor speed and eccentricity phase-difference on the vibration response and dynamic behavior of multi-disk rotor-bearing-brush seal system were discussed. The result showed that the system became more stable when the eccentricity phase-difference decreased.",

keywords = "Brush seal, Multi-disk rotor-bearing-seal system, Nonlinear dynamics, Numerical analysis",

author = "Yuan Wei and Zhaobo Chen and Yinghou Jiao and Shulin Liu",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Nature Switzerland AG.",

year = "2019",

doi = "10.1007/978-3-319-99270-9\_25",

language = "英语",

volume = "62",

pages = "350--362",

journal = "Mechanisms and Machine Science",

issn = "2211-0984",

publisher = "Springer Netherlands",

}

TY - JOUR

T1 - Computational Analysis of Nonlinear Dynamics of a Multi-disk Rotor-Bearing-Brush Seal System

AU - Wei, Yuan

AU - Chen, Zhaobo

AU - Jiao, Yinghou

AU - Liu, Shulin

PY - 2019

Y1 - 2019

N2 - The seal force and oil-film force are two of the main factors which would cause the instability of rotor system, so it is important to further study the nonlinear dynamic characteristics of the multi-disk rotor-bearing-seal system. In order to establish the multi-disk rotor-bearing-brush seal system model of a gas turbine, the seal force model of brush seal and the nonlinear oil-film force model based on short bearing theory were adopted considering the lateral deflection of the disks. The equation of motion was solved by time simulation using the fourth order Runge-Kutta method. The influences of key parameters including rotor speed and eccentricity phase-difference on the vibration response and dynamic behavior of multi-disk rotor-bearing-brush seal system were discussed. The result showed that the system became more stable when the eccentricity phase-difference decreased.

AB - The seal force and oil-film force are two of the main factors which would cause the instability of rotor system, so it is important to further study the nonlinear dynamic characteristics of the multi-disk rotor-bearing-seal system. In order to establish the multi-disk rotor-bearing-brush seal system model of a gas turbine, the seal force model of brush seal and the nonlinear oil-film force model based on short bearing theory were adopted considering the lateral deflection of the disks. The equation of motion was solved by time simulation using the fourth order Runge-Kutta method. The influences of key parameters including rotor speed and eccentricity phase-difference on the vibration response and dynamic behavior of multi-disk rotor-bearing-brush seal system were discussed. The result showed that the system became more stable when the eccentricity phase-difference decreased.

KW - Brush seal

KW - Multi-disk rotor-bearing-seal system

KW - Nonlinear dynamics

KW - Numerical analysis

UR - https://www.scopus.com/pages/publications/85051818739

U2 - 10.1007/978-3-319-99270-9_25

DO - 10.1007/978-3-319-99270-9_25

M3 - 文章

AN - SCOPUS:85051818739

SN - 2211-0984

VL - 62

SP - 350

EP - 362

JO - Mechanisms and Machine Science

JF - Mechanisms and Machine Science

ER -

Computational Analysis of Nonlinear Dynamics of a Multi-disk Rotor-Bearing-Brush Seal System

Abstract

Keywords

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