Influence of temperature on nonlinear dynamic characteristics of spiral-grooved gas-lubricated thrust bearing-rotor systems for microengine

Xiao Qing Zhang; Xiao Li Wang; Ren Liu; Ben Wang

doi:10.1016/j.triboint.2012.12.013

Influence of temperature on nonlinear dynamic characteristics of spiral-grooved gas-lubricated thrust bearing-rotor systems for microengine

Xiao Qing Zhang, Xiao Li Wang^*, Ren Liu, Ben Wang

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology

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

27 Citations (Scopus)

Abstract

The operating temperature of the gas thrust bearings for microengine is up to 1300-1700 K. The influence of temperature on both the gas viscosity and the rarefaction is considered to study the characteristics of the bearing-rotor systems. The molecular gas-film lubrication equation, discretized by employing the finite volume method, is systematically coupled with the kinetic equations and solved simultaneously. The results show that the temperature range can be divided into two regions: the viscosity effect domain region and the rarefaction effects domain region. The system exhibits the weakest stability when operating in the junction zone of the two regions.

Original language	English
Pages (from-to)	138-143
Number of pages	6
Journal	Tribology International
Volume	61
DOIs	https://doi.org/10.1016/j.triboint.2012.12.013
Publication status	Published - 2013

Keywords

Gas-lubricated bearings
High temperature
Nonlinear response
Super thin film

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10.1016/j.triboint.2012.12.013

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title = "Influence of temperature on nonlinear dynamic characteristics of spiral-grooved gas-lubricated thrust bearing-rotor systems for microengine",

abstract = "The operating temperature of the gas thrust bearings for microengine is up to 1300-1700 K. The influence of temperature on both the gas viscosity and the rarefaction is considered to study the characteristics of the bearing-rotor systems. The molecular gas-film lubrication equation, discretized by employing the finite volume method, is systematically coupled with the kinetic equations and solved simultaneously. The results show that the temperature range can be divided into two regions: the viscosity effect domain region and the rarefaction effects domain region. The system exhibits the weakest stability when operating in the junction zone of the two regions.",

keywords = "Gas-lubricated bearings, High temperature, Nonlinear response, Super thin film",

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AU - Zhang, Xiao Qing

AU - Wang, Xiao Li

AU - Liu, Ren

AU - Wang, Ben

PY - 2013

Y1 - 2013

N2 - The operating temperature of the gas thrust bearings for microengine is up to 1300-1700 K. The influence of temperature on both the gas viscosity and the rarefaction is considered to study the characteristics of the bearing-rotor systems. The molecular gas-film lubrication equation, discretized by employing the finite volume method, is systematically coupled with the kinetic equations and solved simultaneously. The results show that the temperature range can be divided into two regions: the viscosity effect domain region and the rarefaction effects domain region. The system exhibits the weakest stability when operating in the junction zone of the two regions.

AB - The operating temperature of the gas thrust bearings for microengine is up to 1300-1700 K. The influence of temperature on both the gas viscosity and the rarefaction is considered to study the characteristics of the bearing-rotor systems. The molecular gas-film lubrication equation, discretized by employing the finite volume method, is systematically coupled with the kinetic equations and solved simultaneously. The results show that the temperature range can be divided into two regions: the viscosity effect domain region and the rarefaction effects domain region. The system exhibits the weakest stability when operating in the junction zone of the two regions.

KW - Gas-lubricated bearings

KW - High temperature

KW - Nonlinear response

KW - Super thin film

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SN - 0301-679X

VL - 61

SP - 138

EP - 143

JO - Tribology International

JF - Tribology International

ER -

Influence of temperature on nonlinear dynamic characteristics of spiral-grooved gas-lubricated thrust bearing-rotor systems for microengine

Abstract

Keywords

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